feat: polymorphic fields

Initial support for polymorphic field types. Polymorphic types are a single of or list of a specific type. For example, `Union[str, list[str]]`.

Polymorphics do not yet have support for direct input in the UI (will come in the future). They will be forcibly set as Connection-only fields, in which case users will not be able to provide direct input to the field.

If a polymorphic should present as a singleton type - which would allow direct input - the node must provide an explicit type hint.

For example, `DenoiseLatents`' `CFG Scale` is polymorphic, but in the node editor, we want to present this as a number input. In the node definition, the field is given `ui_type=UIType.Float`, which tells the UI to treat this as a `float` field.

The connection validation logic will prevent connecting a collection to `CFG Scale` in this situation, because it is typed as `float`. The workaround is to disable validation from the settings to make this specific connection. A future improvement will resolve this.

This also introduces better support for collection field types. Like polymorphics, collection types are parsed automatically by the client and do not need any specific type hints.

Also like polymorphics, there is no support yet for direct input of collection types in the UI.

- Disabling validation in workflow editor now displays the visual hints for valid connections, but lets you connect to anything.
- Added `ui_order: int` to `InputField` and `OutputField`. The UI will use this, if present, to order fields in a node UI. See usage in `DenoiseLatents` for an example.
- Updated the field colors - duplicate colors have just been lightened a bit. It's not perfect but it was a quick fix.
- Field handles for collections are the same color as their single counterparts, but have a dark dot in the center of them.
- Field handles for polymorphics are a rounded square with dot in the middle.
- Removed all fields that just render `null` from `InputFieldRenderer`, replaced with a single fallback
- Removed logic in `zValidatedWorkflow`, which checked for existence of node templates for each node in a workflow. This logic introduced a circular dependency, due to importing the global redux `store` in order to get the node templates within a zod schema. It's actually fine to just leave this out entirely; The case of a missing node template is handled by the UI. Fixing it otherwise would introduce a substantial headache.
- Fixed the `ControlNetInvocation.control_model` field default, which was a string when it shouldn't have one.

invokeai/app/invocations/baseinvocation.py

@@ -105,24 +105,39 @@ class UIType(str, Enum):
     """
 
     # region Primitives
-    Integer = "integer"
-    Float = "float"
     Boolean = "boolean"
-    String = "string"
+    Color = "ColorField"
-    Array = "array"
-    Image = "ImageField"
-    Latents = "LatentsField"
     Conditioning = "ConditioningField"
     Control = "ControlField"
-    Color = "ColorField"
+    Float = "float"
-    ImageCollection = "ImageCollection"
+    Image = "ImageField"
-    ConditioningCollection = "ConditioningCollection"
+    Integer = "integer"
-    ColorCollection = "ColorCollection"
+    Latents = "LatentsField"
-    LatentsCollection = "LatentsCollection"
+    String = "string"
-    IntegerCollection = "IntegerCollection"
+    # endregion
-    FloatCollection = "FloatCollection"
+
-    StringCollection = "StringCollection"
+    # region Collection Primitives
     BooleanCollection = "BooleanCollection"
+    ColorCollection = "ColorCollection"
+    ConditioningCollection = "ConditioningCollection"
+    ControlCollection = "ControlCollection"
+    FloatCollection = "FloatCollection"
+    ImageCollection = "ImageCollection"
+    IntegerCollection = "IntegerCollection"
+    LatentsCollection = "LatentsCollection"
+    StringCollection = "StringCollection"
+    # endregion
+
+    # region Polymorphic Primitives
+    BooleanPolymorphic = "BooleanPolymorphic"
+    ColorPolymorphic = "ColorPolymorphic"
+    ConditioningPolymorphic = "ConditioningPolymorphic"
+    ControlPolymorphic = "ControlPolymorphic"
+    FloatPolymorphic = "FloatPolymorphic"
+    ImagePolymorphic = "ImagePolymorphic"
+    IntegerPolymorphic = "IntegerPolymorphic"
+    LatentsPolymorphic = "LatentsPolymorphic"
+    StringPolymorphic = "StringPolymorphic"
     # endregion
 
     # region Models
@@ -176,6 +191,7 @@ class _InputField(BaseModel):
     ui_type: Optional[UIType]
     ui_component: Optional[UIComponent]
     ui_order: Optional[int]
+    item_default: Optional[Any]
 
 
 class _OutputField(BaseModel):
@@ -223,6 +239,7 @@ def InputField(
     ui_component: Optional[UIComponent] = None,
     ui_hidden: bool = False,
     ui_order: Optional[int] = None,
+    item_default: Optional[Any] = None,
     **kwargs: Any,
 ) -> Any:
     """
@@ -249,6 +266,11 @@ def InputField(
       For this case, you could provide `UIComponent.Textarea`.
 
     : param bool ui_hidden: [False] Specifies whether or not this field should be hidden in the UI.
+
+    : param int ui_order: [None] Specifies the order in which this field should be rendered in the UI. \
+
+    : param bool item_default: [None] Specifies the default item value, if this is a collection input. \
+      Ignored for non-collection fields..
     """
     return Field(
         *args,
@@ -282,6 +304,7 @@ def InputField(
         ui_component=ui_component,
         ui_hidden=ui_hidden,
         ui_order=ui_order,
+        item_default=item_default,
         **kwargs,
     )
 
@@ -332,6 +355,8 @@ def OutputField(
       `UIType.SDXLMainModelField` to indicate that the field is an SDXL main model field.
 
     : param bool ui_hidden: [False] Specifies whether or not this field should be hidden in the UI. \
+
+    : param int ui_order: [None] Specifies the order in which this field should be rendered in the UI. \
     """
     return Field(
         *args,

invokeai/app/invocations/controlnet_image_processors.py

@@ -100,9 +100,7 @@ class ControlNetInvocation(BaseInvocation):
     """Collects ControlNet info to pass to other nodes"""
 
     image: ImageField = InputField(description="The control image")
-    control_model: ControlNetModelField = InputField(
+    control_model: ControlNetModelField = InputField(description=FieldDescriptions.controlnet_model, input=Input.Direct)
-        default="lllyasviel/sd-controlnet-canny", description=FieldDescriptions.controlnet_model, input=Input.Direct
-    )
     control_weight: Union[float, List[float]] = InputField(
         default=1.0, description="The weight given to the ControlNet", ui_type=UIType.Float
     )

invokeai/app/invocations/latent.py

@@ -208,7 +208,10 @@ class DenoiseLatentsInvocation(BaseInvocation):
     )
     unet: UNetField = InputField(description=FieldDescriptions.unet, input=Input.Connection, title="UNet", ui_order=2)
     control: Union[ControlField, list[ControlField]] = InputField(
-        default=None, description=FieldDescriptions.control, input=Input.Connection, ui_order=5
+        default=None,
+        description=FieldDescriptions.control,
+        input=Input.Connection,
+        ui_order=5,
     )
     latents: Optional[LatentsField] = InputField(description=FieldDescriptions.latents, input=Input.Connection)
     denoise_mask: Optional[DenoiseMaskField] = InputField(
@@ -317,7 +320,7 @@ class DenoiseLatentsInvocation(BaseInvocation):
         context: InvocationContext,
         # really only need model for dtype and device
         model: StableDiffusionGeneratorPipeline,
-        control_input: List[ControlField],
+        control_input: Union[ControlField, List[ControlField]],
         latents_shape: List[int],
         exit_stack: ExitStack,
         do_classifier_free_guidance: bool = True,

invokeai/app/invocations/primitives.py

@@ -14,7 +14,6 @@ from .baseinvocation import (
     InvocationContext,
     OutputField,
     UIComponent,
-    UIType,
     invocation,
     invocation_output,
 )
@@ -40,7 +39,9 @@ class BooleanOutput(BaseInvocationOutput):
 class BooleanCollectionOutput(BaseInvocationOutput):
     """Base class for nodes that output a collection of booleans"""
 
-    collection: list[bool] = OutputField(description="The output boolean collection", ui_type=UIType.BooleanCollection)
+    collection: list[bool] = OutputField(
+        description="The output boolean collection",
+    )
 
 
 @invocation("boolean", title="Boolean Primitive", tags=["primitives", "boolean"], category="primitives")
@@ -62,9 +63,7 @@ class BooleanInvocation(BaseInvocation):
 class BooleanCollectionInvocation(BaseInvocation):
     """A collection of boolean primitive values"""
 
-    collection: list[bool] = InputField(
+    collection: list[bool] = InputField(default_factory=list, description="The collection of boolean values")
-        default_factory=list, description="The collection of boolean values", ui_type=UIType.BooleanCollection
-    )
 
     def invoke(self, context: InvocationContext) -> BooleanCollectionOutput:
         return BooleanCollectionOutput(collection=self.collection)
@@ -86,7 +85,9 @@ class IntegerOutput(BaseInvocationOutput):
 class IntegerCollectionOutput(BaseInvocationOutput):
     """Base class for nodes that output a collection of integers"""
 
-    collection: list[int] = OutputField(description="The int collection", ui_type=UIType.IntegerCollection)
+    collection: list[int] = OutputField(
+        description="The int collection",
+    )
 
 
 @invocation("integer", title="Integer Primitive", tags=["primitives", "integer"], category="primitives")
@@ -108,9 +109,7 @@ class IntegerInvocation(BaseInvocation):
 class IntegerCollectionInvocation(BaseInvocation):
     """A collection of integer primitive values"""
 
-    collection: list[int] = InputField(
+    collection: list[int] = InputField(default_factory=list, description="The collection of integer values")
-        default_factory=list, description="The collection of integer values", ui_type=UIType.IntegerCollection
-    )
 
     def invoke(self, context: InvocationContext) -> IntegerCollectionOutput:
         return IntegerCollectionOutput(collection=self.collection)
@@ -132,7 +131,9 @@ class FloatOutput(BaseInvocationOutput):
 class FloatCollectionOutput(BaseInvocationOutput):
     """Base class for nodes that output a collection of floats"""
 
-    collection: list[float] = OutputField(description="The float collection", ui_type=UIType.FloatCollection)
+    collection: list[float] = OutputField(
+        description="The float collection",
+    )
 
 
 @invocation("float", title="Float Primitive", tags=["primitives", "float"], category="primitives")
@@ -154,9 +155,7 @@ class FloatInvocation(BaseInvocation):
 class FloatCollectionInvocation(BaseInvocation):
     """A collection of float primitive values"""
 
-    collection: list[float] = InputField(
+    collection: list[float] = InputField(default_factory=list, description="The collection of float values")
-        default_factory=list, description="The collection of float values", ui_type=UIType.FloatCollection
-    )
 
     def invoke(self, context: InvocationContext) -> FloatCollectionOutput:
         return FloatCollectionOutput(collection=self.collection)
@@ -178,7 +177,9 @@ class StringOutput(BaseInvocationOutput):
 class StringCollectionOutput(BaseInvocationOutput):
     """Base class for nodes that output a collection of strings"""
 
-    collection: list[str] = OutputField(description="The output strings", ui_type=UIType.StringCollection)
+    collection: list[str] = OutputField(
+        description="The output strings",
+    )
 
 
 @invocation("string", title="String Primitive", tags=["primitives", "string"], category="primitives")
@@ -200,9 +201,7 @@ class StringInvocation(BaseInvocation):
 class StringCollectionInvocation(BaseInvocation):
     """A collection of string primitive values"""
 
-    collection: list[str] = InputField(
+    collection: list[str] = InputField(default_factory=list, description="The collection of string values")
-        default_factory=list, description="The collection of string values", ui_type=UIType.StringCollection
-    )
 
     def invoke(self, context: InvocationContext) -> StringCollectionOutput:
         return StringCollectionOutput(collection=self.collection)
@@ -232,7 +231,9 @@ class ImageOutput(BaseInvocationOutput):
 class ImageCollectionOutput(BaseInvocationOutput):
     """Base class for nodes that output a collection of images"""
 
-    collection: list[ImageField] = OutputField(description="The output images", ui_type=UIType.ImageCollection)
+    collection: list[ImageField] = OutputField(
+        description="The output images",
+    )
 
 
 @invocation("image", title="Image Primitive", tags=["primitives", "image"], category="primitives")
@@ -260,9 +261,7 @@ class ImageInvocation(BaseInvocation):
 class ImageCollectionInvocation(BaseInvocation):
     """A collection of image primitive values"""
 
-    collection: list[ImageField] = InputField(
+    collection: list[ImageField] = InputField(default_factory=list, description="The collection of image values")
-        default_factory=list, description="The collection of image values", ui_type=UIType.ImageCollection
-    )
 
     def invoke(self, context: InvocationContext) -> ImageCollectionOutput:
         return ImageCollectionOutput(collection=self.collection)
@@ -316,7 +315,6 @@ class LatentsCollectionOutput(BaseInvocationOutput):
 
     collection: list[LatentsField] = OutputField(
         description=FieldDescriptions.latents,
-        ui_type=UIType.LatentsCollection,
     )
 
 
@@ -342,7 +340,7 @@ class LatentsCollectionInvocation(BaseInvocation):
     """A collection of latents tensor primitive values"""
 
     collection: list[LatentsField] = InputField(
-        description="The collection of latents tensors", ui_type=UIType.LatentsCollection
+        description="The collection of latents tensors",
     )
 
     def invoke(self, context: InvocationContext) -> LatentsCollectionOutput:
@@ -385,7 +383,9 @@ class ColorOutput(BaseInvocationOutput):
 class ColorCollectionOutput(BaseInvocationOutput):
     """Base class for nodes that output a collection of colors"""
 
-    collection: list[ColorField] = OutputField(description="The output colors", ui_type=UIType.ColorCollection)
+    collection: list[ColorField] = OutputField(
+        description="The output colors",
+    )
 
 
 @invocation("color", title="Color Primitive", tags=["primitives", "color"], category="primitives")
@@ -422,7 +422,6 @@ class ConditioningCollectionOutput(BaseInvocationOutput):
 
     collection: list[ConditioningField] = OutputField(
         description="The output conditioning tensors",
-        ui_type=UIType.ConditioningCollection,
     )
 
 
@@ -453,7 +452,6 @@ class ConditioningCollectionInvocation(BaseInvocation):
     collection: list[ConditioningField] = InputField(
         default_factory=list,
         description="The collection of conditioning tensors",
-        ui_type=UIType.ConditioningCollection,
     )
 
     def invoke(self, context: InvocationContext) -> ConditioningCollectionOutput:

invokeai/frontend/web/src/common/util/colorTokenToCssVar.ts

@@ -1,2 +1,2 @@
 export const colorTokenToCssVar = (colorToken: string) =>
-  `var(--invokeai-colors-${colorToken.split('.').join('-')}`;
+  `var(--invokeai-colors-${colorToken.split('.').join('-')})`;

invokeai/frontend/web/src/features/nodes/components/flow/nodes/Invocation/fields/FieldHandle.tsx

@@ -1,8 +1,10 @@
 import { Tooltip } from '@chakra-ui/react';
 import { colorTokenToCssVar } from 'common/util/colorTokenToCssVar';
 import {
+  COLLECTION_TYPES,
   FIELDS,
   HANDLE_TOOLTIP_OPEN_DELAY,
+  POLYMORPHIC_TYPES,
 } from 'features/nodes/types/constants';
 import {
   InputFieldTemplate,
@@ -18,6 +20,7 @@ export const handleBaseStyles: CSSProperties = {
   borderWidth: 0,
   zIndex: 1,
 };
+``;
 
 export const inputHandleStyles: CSSProperties = {
   left: '-1rem',
@@ -44,15 +47,24 @@ const FieldHandle = (props: FieldHandleProps) => {
     connectionError,
   } = props;
   const { name, type } = fieldTemplate;
-  const { color, title } = FIELDS[type];
+  const { color: typeColor, title } = FIELDS[type];
 
   const styles: CSSProperties = useMemo(() => {
+    const isCollectionType = COLLECTION_TYPES.includes(type);
+    const isPolymorphicType = POLYMORPHIC_TYPES.includes(type);
+    const color = colorTokenToCssVar(typeColor);
     const s: CSSProperties = {
-      backgroundColor: colorTokenToCssVar(color),
+      backgroundColor:
+        isCollectionType || isPolymorphicType
+          ? 'var(--invokeai-colors-base-900)'
+          : color,
       position: 'absolute',
       width: '1rem',
       height: '1rem',
-      borderWidth: 0,
+      borderWidth: isCollectionType || isPolymorphicType ? 4 : 0,
+      borderStyle: 'solid',
+      borderColor: color,
+      borderRadius: isPolymorphicType ? 4 : '100%',
       zIndex: 1,
     };
 
@@ -78,11 +90,12 @@ const FieldHandle = (props: FieldHandleProps) => {
 
     return s;
   }, [
-    color,
     connectionError,
     handleType,
     isConnectionInProgress,
     isConnectionStartField,
+    type,
+    typeColor,
   ]);
 
   const tooltip = useMemo(() => {

invokeai/frontend/web/src/features/nodes/components/flow/nodes/Invocation/fields/InputField.tsx

@@ -75,6 +75,7 @@ const InputField = ({ nodeId, fieldName }: Props) => {
               sx={{
                 display: 'flex',
                 alignItems: 'center',
+                h: 'full',
                 mb: 0,
                 px: 1,
                 gap: 2,

invokeai/frontend/web/src/features/nodes/components/flow/nodes/Invocation/fields/InputFieldRenderer.tsx

@@ -3,18 +3,10 @@ import { useFieldData } from 'features/nodes/hooks/useFieldData';
 import { useFieldTemplate } from 'features/nodes/hooks/useFieldTemplate';
 import { memo } from 'react';
 import BooleanInputField from './inputs/BooleanInputField';
-import ClipInputField from './inputs/ClipInputField';
-import CollectionInputField from './inputs/CollectionInputField';
-import CollectionItemInputField from './inputs/CollectionItemInputField';
 import ColorInputField from './inputs/ColorInputField';
-import ConditioningInputField from './inputs/ConditioningInputField';
-import ControlInputField from './inputs/ControlInputField';
 import ControlNetModelInputField from './inputs/ControlNetModelInputField';
-import DenoiseMaskInputField from './inputs/DenoiseMaskInputField';
 import EnumInputField from './inputs/EnumInputField';
-import ImageCollectionInputField from './inputs/ImageCollectionInputField';
 import ImageInputField from './inputs/ImageInputField';
-import LatentsInputField from './inputs/LatentsInputField';
 import LoRAModelInputField from './inputs/LoRAModelInputField';
 import MainModelInputField from './inputs/MainModelInputField';
 import NumberInputField from './inputs/NumberInputField';
@@ -22,8 +14,6 @@ import RefinerModelInputField from './inputs/RefinerModelInputField';
 import SDXLMainModelInputField from './inputs/SDXLMainModelInputField';
 import SchedulerInputField from './inputs/SchedulerInputField';
 import StringInputField from './inputs/StringInputField';
-import UnetInputField from './inputs/UnetInputField';
-import VaeInputField from './inputs/VaeInputField';
 import VaeModelInputField from './inputs/VaeModelInputField';
 
 type InputFieldProps = {
@@ -31,7 +21,6 @@ type InputFieldProps = {
   fieldName: string;
 };
 
-// build an individual input element based on the schema
 const InputFieldRenderer = ({ nodeId, fieldName }: InputFieldProps) => {
   const field = useFieldData(nodeId, fieldName);
   const fieldTemplate = useFieldTemplate(nodeId, fieldName, 'input');
@@ -93,88 +82,6 @@ const InputFieldRenderer = ({ nodeId, fieldName }: InputFieldProps) => {
     );
   }
 
-  if (
-    field?.type === 'LatentsField' &&
-    fieldTemplate?.type === 'LatentsField'
-  ) {
-    return (
-      <LatentsInputField
-        nodeId={nodeId}
-        field={field}
-        fieldTemplate={fieldTemplate}
-      />
-    );
-  }
-
-  if (
-    field?.type === 'DenoiseMaskField' &&
-    fieldTemplate?.type === 'DenoiseMaskField'
-  ) {
-    return (
-      <DenoiseMaskInputField
-        nodeId={nodeId}
-        field={field}
-        fieldTemplate={fieldTemplate}
-      />
-    );
-  }
-
-  if (
-    field?.type === 'ConditioningField' &&
-    fieldTemplate?.type === 'ConditioningField'
-  ) {
-    return (
-      <ConditioningInputField
-        nodeId={nodeId}
-        field={field}
-        fieldTemplate={fieldTemplate}
-      />
-    );
-  }
-
-  if (field?.type === 'UNetField' && fieldTemplate?.type === 'UNetField') {
-    return (
-      <UnetInputField
-        nodeId={nodeId}
-        field={field}
-        fieldTemplate={fieldTemplate}
-      />
-    );
-  }
-
-  if (field?.type === 'ClipField' && fieldTemplate?.type === 'ClipField') {
-    return (
-      <ClipInputField
-        nodeId={nodeId}
-        field={field}
-        fieldTemplate={fieldTemplate}
-      />
-    );
-  }
-
-  if (field?.type === 'VaeField' && fieldTemplate?.type === 'VaeField') {
-    return (
-      <VaeInputField
-        nodeId={nodeId}
-        field={field}
-        fieldTemplate={fieldTemplate}
-      />
-    );
-  }
-
-  if (
-    field?.type === 'ControlField' &&
-    fieldTemplate?.type === 'ControlField'
-  ) {
-    return (
-      <ControlInputField
-        nodeId={nodeId}
-        field={field}
-        fieldTemplate={fieldTemplate}
-      />
-    );
-  }
-
   if (
     field?.type === 'MainModelField' &&
     fieldTemplate?.type === 'MainModelField'
@@ -240,29 +147,6 @@ const InputFieldRenderer = ({ nodeId, fieldName }: InputFieldProps) => {
     );
   }
 
-  if (field?.type === 'Collection' && fieldTemplate?.type === 'Collection') {
-    return (
-      <CollectionInputField
-        nodeId={nodeId}
-        field={field}
-        fieldTemplate={fieldTemplate}
-      />
-    );
-  }
-
-  if (
-    field?.type === 'CollectionItem' &&
-    fieldTemplate?.type === 'CollectionItem'
-  ) {
-    return (
-      <CollectionItemInputField
-        nodeId={nodeId}
-        field={field}
-        fieldTemplate={fieldTemplate}
-      />
-    );
-  }
-
   if (field?.type === 'ColorField' && fieldTemplate?.type === 'ColorField') {
     return (
       <ColorInputField
@@ -273,19 +157,6 @@ const InputFieldRenderer = ({ nodeId, fieldName }: InputFieldProps) => {
     );
   }
 
-  if (
-    field?.type === 'ImageCollection' &&
-    fieldTemplate?.type === 'ImageCollection'
-  ) {
-    return (
-      <ImageCollectionInputField
-        nodeId={nodeId}
-        field={field}
-        fieldTemplate={fieldTemplate}
-      />
-    );
-  }
-
   if (
     field?.type === 'SDXLMainModelField' &&
     fieldTemplate?.type === 'SDXLMainModelField'
@@ -309,6 +180,11 @@ const InputFieldRenderer = ({ nodeId, fieldName }: InputFieldProps) => {
     );
   }
 
+  if (field && fieldTemplate) {
+    // Fallback for when there is no component for the type
+    return null;
+  }
+
   return (
     <Box p={1}>
       <Text

invokeai/frontend/web/src/features/nodes/components/flow/nodes/Invocation/fields/inputs/ControlInputField.tsx

@@ -1,12 +1,17 @@
 import {
   ControlInputFieldTemplate,
   ControlInputFieldValue,
+  ControlPolymorphicInputFieldTemplate,
+  ControlPolymorphicInputFieldValue,
   FieldComponentProps,
 } from 'features/nodes/types/types';
 import { memo } from 'react';
 
 const ControlInputFieldComponent = (
-  _props: FieldComponentProps<ControlInputFieldValue, ControlInputFieldTemplate>
+  _props: FieldComponentProps<
+    ControlInputFieldValue | ControlPolymorphicInputFieldValue,
+    ControlInputFieldTemplate | ControlPolymorphicInputFieldTemplate
+  >
 ) => {
   return null;
 };

invokeai/frontend/web/src/features/nodes/components/flow/nodes/Invocation/fields/inputs/ImageInputField.tsx

@@ -9,9 +9,9 @@ import {
 } from 'features/dnd/types';
 import { fieldImageValueChanged } from 'features/nodes/store/nodesSlice';
 import {
+  FieldComponentProps,
   ImageInputFieldTemplate,
   ImageInputFieldValue,
-  FieldComponentProps,
 } from 'features/nodes/types/types';
 import { memo, useCallback, useMemo } from 'react';
 import { FaUndo } from 'react-icons/fa';

invokeai/frontend/web/src/features/nodes/components/flow/nodes/Invocation/fields/inputs/LatentsInputField.tsx

@@ -2,11 +2,16 @@ import {
   LatentsInputFieldTemplate,
   LatentsInputFieldValue,
   FieldComponentProps,
+  LatentsPolymorphicInputFieldValue,
+  LatentsPolymorphicInputFieldTemplate,
 } from 'features/nodes/types/types';
 import { memo } from 'react';
 
 const LatentsInputFieldComponent = (
-  _props: FieldComponentProps<LatentsInputFieldValue, LatentsInputFieldTemplate>
+  _props: FieldComponentProps<
+    LatentsInputFieldValue | LatentsPolymorphicInputFieldValue,
+    LatentsInputFieldTemplate | LatentsPolymorphicInputFieldTemplate
+  >
 ) => {
   return null;
 };

invokeai/frontend/web/src/features/nodes/components/flow/nodes/Invocation/fields/inputs/NumberInputField.tsx

@@ -9,11 +9,11 @@ import { useAppDispatch } from 'app/store/storeHooks';
 import { numberStringRegex } from 'common/components/IAINumberInput';
 import { fieldNumberValueChanged } from 'features/nodes/store/nodesSlice';
 import {
+  FieldComponentProps,
   FloatInputFieldTemplate,
   FloatInputFieldValue,
   IntegerInputFieldTemplate,
   IntegerInputFieldValue,
-  FieldComponentProps,
 } from 'features/nodes/types/types';
 import { memo, useEffect, useMemo, useState } from 'react';
 

invokeai/frontend/web/src/features/nodes/hooks/useIsValidConnection.ts

@@ -3,9 +3,19 @@ import graphlib from '@dagrejs/graphlib';
 import { useAppSelector } from 'app/store/storeHooks';
 import { useCallback } from 'react';
 import { Connection, Edge, Node, useReactFlow } from 'reactflow';
-import { COLLECTION_TYPES } from '../types/constants';
+import {
+  COLLECTION_MAP,
+  COLLECTION_TYPES,
+  POLYMORPHIC_TO_SINGLE_MAP,
+  POLYMORPHIC_TYPES,
+} from '../types/constants';
 import { InvocationNodeData } from '../types/types';
 
+/**
+ * NOTE: The logic here must be duplicated in `invokeai/frontend/web/src/features/nodes/store/util/makeIsConnectionValidSelector.ts`
+ * TODO: Figure out how to do this without duplicating all the logic
+ */
+
 export const useIsValidConnection = () => {
   const flow = useReactFlow();
   const shouldValidateGraph = useAppSelector(
@@ -42,6 +52,19 @@ export const useIsValidConnection = () => {
         return false;
       }
 
+      if (
+        edges
+          .filter((edge) => {
+            return edge.target === target && edge.targetHandle === targetHandle;
+          })
+          .find((edge) => {
+            edge.source === source && edge.sourceHandle === sourceHandle;
+          })
+      ) {
+        // We already have a connection from this source to this target
+        return false;
+      }
+
       // Connection is invalid if target already has a connection
       if (
         edges.find((edge) => {
@@ -53,21 +76,59 @@ export const useIsValidConnection = () => {
         return false;
       }
 
-      // Connection types must be the same for a connection
+      /**
-      if (
+       * Connection types must be the same for a connection, with exceptions:
-        sourceType !== targetType &&
+       * - CollectionItem can connect to any non-Collection
-        sourceType !== 'CollectionItem' &&
+       * - Non-Collections can connect to CollectionItem
-        targetType !== 'CollectionItem'
+       * - Anything (non-Collections, Collections, Polymorphics) can connect to Polymorphics of the same base type
-      ) {
+       * - Generic Collection can connect to any other Collection or Polymorphic
-        if (
+       * - Any Collection can connect to a Generic Collection
-          !(
+       */
-            COLLECTION_TYPES.includes(targetType) &&
+
-            COLLECTION_TYPES.includes(sourceType)
+      if (sourceType !== targetType) {
-          )
+        const isCollectionItemToNonCollection =
-        ) {
+          sourceType === 'CollectionItem' &&
-          return false;
+          !COLLECTION_TYPES.includes(targetType);
-        }
+
+        const isNonCollectionToCollectionItem =
+          targetType === 'CollectionItem' &&
+          !COLLECTION_TYPES.includes(sourceType) &&
+          !POLYMORPHIC_TYPES.includes(sourceType);
+
+        const isAnythingToPolymorphicOfSameBaseType =
+          POLYMORPHIC_TYPES.includes(targetType) &&
+          (() => {
+            if (!POLYMORPHIC_TYPES.includes(targetType)) {
+              return false;
+            }
+            const baseType =
+              POLYMORPHIC_TO_SINGLE_MAP[
+                targetType as keyof typeof POLYMORPHIC_TO_SINGLE_MAP
+              ];
+
+            const collectionType =
+              COLLECTION_MAP[baseType as keyof typeof COLLECTION_MAP];
+
+            return sourceType === baseType || sourceType === collectionType;
+          })();
+
+        const isGenericCollectionToAnyCollectionOrPolymorphic =
+          sourceType === 'Collection' &&
+          (COLLECTION_TYPES.includes(targetType) ||
+            POLYMORPHIC_TYPES.includes(targetType));
+
+        const isCollectionToGenericCollection =
+          targetType === 'Collection' && COLLECTION_TYPES.includes(sourceType);
+
+        return (
+          isCollectionItemToNonCollection ||
+          isNonCollectionToCollectionItem ||
+          isAnythingToPolymorphicOfSameBaseType ||
+          isGenericCollectionToAnyCollectionOrPolymorphic ||
+          isCollectionToGenericCollection
+        );
       }
+
       // Graphs much be acyclic (no loops!)
       return getIsGraphAcyclic(source, target, nodes, edges);
     },

invokeai/frontend/web/src/features/nodes/store/util/makeIsConnectionValidSelector.ts

@@ -1,10 +1,20 @@
 import { createSelector } from '@reduxjs/toolkit';
 import { stateSelector } from 'app/store/store';
 import { getIsGraphAcyclic } from 'features/nodes/hooks/useIsValidConnection';
-import { COLLECTION_TYPES } from 'features/nodes/types/constants';
+import {
+  COLLECTION_MAP,
+  COLLECTION_TYPES,
+  POLYMORPHIC_TO_SINGLE_MAP,
+  POLYMORPHIC_TYPES,
+} from 'features/nodes/types/constants';
 import { FieldType } from 'features/nodes/types/types';
 import { HandleType } from 'reactflow';
 
+/**
+ * NOTE: The logic here must be duplicated in `invokeai/frontend/web/src/features/nodes/hooks/useIsValidConnection.ts`
+ * TODO: Figure out how to do this without duplicating all the logic
+ */
+
 export const makeConnectionErrorSelector = (
   nodeId: string,
   fieldName: string,
@@ -19,11 +29,6 @@ export const makeConnectionErrorSelector = (
     const { currentConnectionFieldType, connectionStartParams, nodes, edges } =
       state.nodes;
 
-    if (!state.nodes.shouldValidateGraph) {
-      // manual override!
-      return null;
-    }
-
     if (!connectionStartParams || !currentConnectionFieldType) {
       return 'No connection in progress';
     }
@@ -38,9 +43,9 @@ export const makeConnectionErrorSelector = (
       return 'No connection data';
     }
 
-    const targetFieldType =
+    const targetType =
       handleType === 'target' ? fieldType : currentConnectionFieldType;
-    const sourceFieldType =
+    const sourceType =
       handleType === 'source' ? fieldType : currentConnectionFieldType;
 
     if (nodeId === connectionNodeId) {
@@ -55,30 +60,70 @@ export const makeConnectionErrorSelector = (
     }
 
     if (
-      fieldType !== currentConnectionFieldType &&
-      fieldType !== 'CollectionItem' &&
-      currentConnectionFieldType !== 'CollectionItem'
-    ) {
-      if (
-        !(
-          COLLECTION_TYPES.includes(targetFieldType) &&
-          COLLECTION_TYPES.includes(sourceFieldType)
-        )
-      ) {
-        // except for collection items, field types must match
-        return 'Field types must match';
-      }
-    }
-
-    if (
-      handleType === 'target' &&
       edges.find((edge) => {
         return edge.target === nodeId && edge.targetHandle === fieldName;
       }) &&
       // except CollectionItem inputs can have multiples
-      targetFieldType !== 'CollectionItem'
+      targetType !== 'CollectionItem'
     ) {
-      return 'Inputs may only have one connection';
+      return 'Input may only have one connection';
+    }
+
+    /**
+     * Connection types must be the same for a connection, with exceptions:
+     * - CollectionItem can connect to any non-Collection
+     * - Non-Collections can connect to CollectionItem
+     * - Anything (non-Collections, Collections, Polymorphics) can connect to Polymorphics of the same base type
+     * - Generic Collection can connect to any other Collection or Polymorphic
+     * - Any Collection can connect to a Generic Collection
+     */
+
+    if (sourceType !== targetType) {
+      const isCollectionItemToNonCollection =
+        sourceType === 'CollectionItem' &&
+        !COLLECTION_TYPES.includes(targetType);
+
+      const isNonCollectionToCollectionItem =
+        targetType === 'CollectionItem' &&
+        !COLLECTION_TYPES.includes(sourceType) &&
+        !POLYMORPHIC_TYPES.includes(sourceType);
+
+      const isAnythingToPolymorphicOfSameBaseType =
+        POLYMORPHIC_TYPES.includes(targetType) &&
+        (() => {
+          if (!POLYMORPHIC_TYPES.includes(targetType)) {
+            return false;
+          }
+          const baseType =
+            POLYMORPHIC_TO_SINGLE_MAP[
+              targetType as keyof typeof POLYMORPHIC_TO_SINGLE_MAP
+            ];
+
+          const collectionType =
+            COLLECTION_MAP[baseType as keyof typeof COLLECTION_MAP];
+
+          return sourceType === baseType || sourceType === collectionType;
+        })();
+
+      const isGenericCollectionToAnyCollectionOrPolymorphic =
+        sourceType === 'Collection' &&
+        (COLLECTION_TYPES.includes(targetType) ||
+          POLYMORPHIC_TYPES.includes(targetType));
+
+      const isCollectionToGenericCollection =
+        targetType === 'Collection' && COLLECTION_TYPES.includes(sourceType);
+
+      if (
+        !(
+          isCollectionItemToNonCollection ||
+          isNonCollectionToCollectionItem ||
+          isAnythingToPolymorphicOfSameBaseType ||
+          isGenericCollectionToAnyCollectionOrPolymorphic ||
+          isCollectionToGenericCollection
+        )
+      ) {
+        return 'Field types must match';
+      }
     }
 
     const isGraphAcyclic = getIsGraphAcyclic(

invokeai/frontend/web/src/features/nodes/types/constants.ts

@@ -17,176 +17,284 @@ export const KIND_MAP = {
 export const COLLECTION_TYPES: FieldType[] = [
   'Collection',
   'IntegerCollection',
+  'BooleanCollection',
   'FloatCollection',
   'StringCollection',
-  'BooleanCollection',
   'ImageCollection',
+  'LatentsCollection',
+  'ConditioningCollection',
+  'ControlCollection',
+  'ColorCollection',
 ];
 
+export const POLYMORPHIC_TYPES = [
+  'IntegerPolymorphic',
+  'BooleanPolymorphic',
+  'FloatPolymorphic',
+  'StringPolymorphic',
+  'ImagePolymorphic',
+  'LatentsPolymorphic',
+  'ConditioningPolymorphic',
+  'ControlPolymorphic',
+  'ColorPolymorphic',
+];
+
+export const COLLECTION_MAP = {
+  integer: 'IntegerCollection',
+  boolean: 'BooleanCollection',
+  number: 'FloatCollection',
+  float: 'FloatCollection',
+  string: 'StringCollection',
+  ImageField: 'ImageCollection',
+  LatentsField: 'LatentsCollection',
+  ConditioningField: 'ConditioningCollection',
+  ControlField: 'ControlCollection',
+  ColorField: 'ColorCollection',
+};
+export const isCollectionItemType = (
+  itemType: string | undefined
+): itemType is keyof typeof COLLECTION_MAP =>
+  Boolean(itemType && itemType in COLLECTION_MAP);
+
+export const SINGLE_TO_POLYMORPHIC_MAP = {
+  integer: 'IntegerPolymorphic',
+  boolean: 'BooleanPolymorphic',
+  number: 'FloatPolymorphic',
+  float: 'FloatPolymorphic',
+  string: 'StringPolymorphic',
+  ImageField: 'ImagePolymorphic',
+  LatentsField: 'LatentsPolymorphic',
+  ConditioningField: 'ConditioningPolymorphic',
+  ControlField: 'ControlPolymorphic',
+  ColorField: 'ColorPolymorphic',
+};
+
+export const POLYMORPHIC_TO_SINGLE_MAP = {
+  IntegerPolymorphic: 'integer',
+  BooleanPolymorphic: 'boolean',
+  FloatPolymorphic: 'float',
+  StringPolymorphic: 'string',
+  ImagePolymorphic: 'ImageField',
+  LatentsPolymorphic: 'LatentsField',
+  ConditioningPolymorphic: 'ConditioningField',
+  ControlPolymorphic: 'ControlField',
+  ColorPolymorphic: 'ColorField',
+};
+
+export const isPolymorphicItemType = (
+  itemType: string | undefined
+): itemType is keyof typeof SINGLE_TO_POLYMORPHIC_MAP =>
+  Boolean(itemType && itemType in SINGLE_TO_POLYMORPHIC_MAP);
+
 export const FIELDS: Record<FieldType, FieldUIConfig> = {
-  integer: {
-    title: 'Integer',
-    description: 'Integers are whole numbers, without a decimal point.',
-    color: 'red.500',
-  },
-  float: {
-    title: 'Float',
-    description: 'Floats are numbers with a decimal point.',
-    color: 'orange.500',
-  },
-  string: {
-    title: 'String',
-    description: 'Strings are text.',
-    color: 'yellow.500',
-  },
   boolean: {
-    title: 'Boolean',
     color: 'green.500',
     description: 'Booleans are true or false.',
+    title: 'Boolean',
   },
-  enum: {
+  BooleanCollection: {
-    title: 'Enum',
+    color: 'green.500',
-    description: 'Enums are values that may be one of a number of options.',
+    description: 'A collection of booleans.',
-    color: 'blue.500',
+    title: 'Boolean Collection',
   },
-  array: {
+  BooleanPolymorphic: {
-    title: 'Array',
+    color: 'green.500',
-    description: 'Enums are values that may be one of a number of options.',
+    description: 'A collection of booleans.',
-    color: 'base.500',
+    title: 'Boolean Polymorphic',
-  },
-  ImageField: {
-    title: 'Image',
-    description: 'Images may be passed between nodes.',
-    color: 'purple.500',
-  },
-  DenoiseMaskField: {
-    title: 'Denoise Mask',
-    description: 'Denoise Mask may be passed between nodes',
-    color: 'base.500',
-  },
-  LatentsField: {
-    title: 'Latents',
-    description: 'Latents may be passed between nodes.',
-    color: 'pink.500',
-  },
-  LatentsCollection: {
-    title: 'Latents Collection',
-    description: 'Latents may be passed between nodes.',
-    color: 'pink.500',
-  },
-  ConditioningField: {
-    color: 'cyan.500',
-    title: 'Conditioning',
-    description: 'Conditioning may be passed between nodes.',
-  },
-  ConditioningCollection: {
-    color: 'cyan.500',
-    title: 'Conditioning Collection',
-    description: 'Conditioning may be passed between nodes.',
-  },
-  ImageCollection: {
-    title: 'Image Collection',
-    description: 'A collection of images.',
-    color: 'base.300',
-  },
-  UNetField: {
-    color: 'red.500',
-    title: 'UNet',
-    description: 'UNet submodel.',
   },
   ClipField: {
-    color: 'green.500',
+    color: 'green.300',
-    title: 'Clip',
     description: 'Tokenizer and text_encoder submodels.',
-  },
+    title: 'Clip',
-  VaeField: {
-    color: 'blue.500',
-    title: 'Vae',
-    description: 'Vae submodel.',
-  },
-  ControlField: {
-    color: 'cyan.500',
-    title: 'Control',
-    description: 'Control info passed between nodes.',
-  },
-  MainModelField: {
-    color: 'teal.500',
-    title: 'Model',
-    description: 'TODO',
-  },
-  SDXLRefinerModelField: {
-    color: 'teal.500',
-    title: 'Refiner Model',
-    description: 'TODO',
-  },
-  VaeModelField: {
-    color: 'teal.500',
-    title: 'VAE',
-    description: 'TODO',
-  },
-  LoRAModelField: {
-    color: 'teal.500',
-    title: 'LoRA',
-    description: 'TODO',
-  },
-  ControlNetModelField: {
-    color: 'teal.500',
-    title: 'ControlNet',
-    description: 'TODO',
-  },
-  Scheduler: {
-    color: 'base.500',
-    title: 'Scheduler',
-    description: 'TODO',
   },
   Collection: {
     color: 'base.500',
-    title: 'Collection',
     description: 'TODO',
+    title: 'Collection',
   },
   CollectionItem: {
     color: 'base.500',
-    title: 'Collection Item',
     description: 'TODO',
+    title: 'Collection Item',
+  },
+  ColorCollection: {
+    color: 'pink.300',
+    description: 'A collection of colors.',
+    title: 'Color Collection',
   },
   ColorField: {
-    title: 'Color',
+    color: 'pink.300',
     description: 'A RGBA color.',
-    color: 'base.500',
+    title: 'Color',
   },
-  BooleanCollection: {
+  ColorPolymorphic: {
-    title: 'Boolean Collection',
+    color: 'pink.300',
-    description: 'A collection of booleans.',
+    description: 'A collection of colors.',
-    color: 'green.500',
+    title: 'Color Polymorphic',
   },
-  IntegerCollection: {
+  ConditioningCollection: {
-    title: 'Integer Collection',
+    color: 'cyan.500',
-    description: 'A collection of integers.',
+    description: 'Conditioning may be passed between nodes.',
-    color: 'red.500',
+    title: 'Conditioning Collection',
+  },
+  ConditioningField: {
+    color: 'cyan.500',
+    description: 'Conditioning may be passed between nodes.',
+    title: 'Conditioning',
+  },
+  ConditioningPolymorphic: {
+    color: 'cyan.500',
+    description: 'Conditioning may be passed between nodes.',
+    title: 'Conditioning Polymorphic',
+  },
+  ControlCollection: {
+    color: 'teal.500',
+    description: 'Control info passed between nodes.',
+    title: 'Control Collection',
+  },
+  ControlField: {
+    color: 'teal.500',
+    description: 'Control info passed between nodes.',
+    title: 'Control',
+  },
+  ControlNetModelField: {
+    color: 'teal.500',
+    description: 'TODO',
+    title: 'ControlNet',
+  },
+  ControlPolymorphic: {
+    color: 'teal.500',
+    description: 'Control info passed between nodes.',
+    title: 'Control Polymorphic',
+  },
+  DenoiseMaskField: {
+    color: 'blue.300',
+    description: 'Denoise Mask may be passed between nodes',
+    title: 'Denoise Mask',
+  },
+  enum: {
+    color: 'blue.500',
+    description: 'Enums are values that may be one of a number of options.',
+    title: 'Enum',
+  },
+  float: {
+    color: 'orange.500',
+    description: 'Floats are numbers with a decimal point.',
+    title: 'Float',
   },
   FloatCollection: {
     color: 'orange.500',
-    title: 'Float Collection',
     description: 'A collection of floats.',
+    title: 'Float Collection',
   },
-  ColorCollection: {
+  FloatPolymorphic: {
-    color: 'base.500',
+    color: 'orange.500',
-    title: 'Color Collection',
+    description: 'A collection of floats.',
-    description: 'A collection of colors.',
+    title: 'Float Polymorphic',
+  },
+  ImageCollection: {
+    color: 'purple.500',
+    description: 'A collection of images.',
+    title: 'Image Collection',
+  },
+  ImageField: {
+    color: 'purple.500',
+    description: 'Images may be passed between nodes.',
+    title: 'Image',
+  },
+  ImagePolymorphic: {
+    color: 'purple.500',
+    description: 'A collection of images.',
+    title: 'Image Polymorphic',
+  },
+  integer: {
+    color: 'red.500',
+    description: 'Integers are whole numbers, without a decimal point.',
+    title: 'Integer',
+  },
+  IntegerCollection: {
+    color: 'red.500',
+    description: 'A collection of integers.',
+    title: 'Integer Collection',
+  },
+  IntegerPolymorphic: {
+    color: 'red.500',
+    description: 'A collection of integers.',
+    title: 'Integer Polymorphic',
+  },
+  LatentsCollection: {
+    color: 'pink.500',
+    description: 'Latents may be passed between nodes.',
+    title: 'Latents Collection',
+  },
+  LatentsField: {
+    color: 'pink.500',
+    description: 'Latents may be passed between nodes.',
+    title: 'Latents',
+  },
+  LatentsPolymorphic: {
+    color: 'pink.500',
+    description: 'Latents may be passed between nodes.',
+    title: 'Latents Polymorphic',
+  },
+  LoRAModelField: {
+    color: 'teal.300',
+    description: 'TODO',
+    title: 'LoRA',
+  },
+  MainModelField: {
+    color: 'teal.300',
+    description: 'TODO',
+    title: 'Model',
   },
   ONNXModelField: {
-    color: 'base.500',
+    color: 'teal.300',
-    title: 'ONNX Model',
     description: 'ONNX model field.',
+    title: 'ONNX Model',
+  },
+  Scheduler: {
+    color: 'base.500',
+    description: 'TODO',
+    title: 'Scheduler',
   },
   SDXLMainModelField: {
-    color: 'base.500',
+    color: 'teal.300',
-    title: 'SDXL Model',
     description: 'SDXL model field.',
+    title: 'SDXL Model',
+  },
+  SDXLRefinerModelField: {
+    color: 'teal.300',
+    description: 'TODO',
+    title: 'Refiner Model',
+  },
+  string: {
+    color: 'yellow.500',
+    description: 'Strings are text.',
+    title: 'String',
   },
   StringCollection: {
     color: 'yellow.500',
-    title: 'String Collection',
     description: 'A collection of strings.',
+    title: 'String Collection',
+  },
+  StringPolymorphic: {
+    color: 'yellow.500',
+    description: 'A collection of strings.',
+    title: 'String Polymorphic',
+  },
+  UNetField: {
+    color: 'red.300',
+    description: 'UNet submodel.',
+    title: 'UNet',
+  },
+  VaeField: {
+    color: 'blue.300',
+    description: 'Vae submodel.',
+    title: 'Vae',
+  },
+  VaeModelField: {
+    color: 'teal.300',
+    description: 'TODO',
+    title: 'VAE',
   },
 };

invokeai/frontend/web/src/features/nodes/types/types.ts

@@ -11,7 +11,7 @@ import { keyBy } from 'lodash-es';
 import { OpenAPIV3 } from 'openapi-types';
 import { RgbaColor } from 'react-colorful';
 import { Node } from 'reactflow';
-import { Graph, ImageDTO, _InputField, _OutputField } from 'services/api/types';
+import { Graph, _InputField, _OutputField } from 'services/api/types';
 import {
   AnyInvocationType,
   AnyResult,
@@ -62,50 +62,48 @@ export type FieldUIConfig = {
 
 // TODO: Get this from the OpenAPI schema? may be tricky...
 export const zFieldType = z.enum([
-  // region Primitives
-  'integer',
-  'float',
   'boolean',
-  'string',
-  'array',
-  'ImageField',
-  'DenoiseMaskField',
-  'LatentsField',
-  'ConditioningField',
-  'ControlField',
-  'ColorField',
-  'ImageCollection',
-  'ConditioningCollection',
-  'ColorCollection',
-  'LatentsCollection',
-  'IntegerCollection',
-  'FloatCollection',
-  'StringCollection',
   'BooleanCollection',
-  // endregion
+  'BooleanPolymorphic',
-
-  // region Models
-  'MainModelField',
-  'SDXLMainModelField',
-  'SDXLRefinerModelField',
-  'ONNXModelField',
-  'VaeModelField',
-  'LoRAModelField',
-  'ControlNetModelField',
-  'UNetField',
-  'VaeField',
   'ClipField',
-  // endregion
-
-  // region Iterate/Collect
   'Collection',
   'CollectionItem',
-  // endregion
+  'ColorCollection',
-
+  'ColorField',
-  // region Misc
+  'ColorPolymorphic',
+  'ConditioningCollection',
+  'ConditioningField',
+  'ConditioningPolymorphic',
+  'ControlCollection',
+  'ControlField',
+  'ControlNetModelField',
+  'ControlPolymorphic',
+  'DenoiseMaskField',
   'enum',
+  'float',
+  'FloatCollection',
+  'FloatPolymorphic',
+  'ImageCollection',
+  'ImageField',
+  'ImagePolymorphic',
+  'integer',
+  'IntegerCollection',
+  'IntegerPolymorphic',
+  'LatentsCollection',
+  'LatentsField',
+  'LatentsPolymorphic',
+  'LoRAModelField',
+  'MainModelField',
+  'ONNXModelField',
   'Scheduler',
-  // endregion
+  'SDXLMainModelField',
+  'SDXLRefinerModelField',
+  'string',
+  'StringCollection',
+  'StringPolymorphic',
+  'UNetField',
+  'VaeField',
+  'VaeModelField',
 ]);
 
 export type FieldType = z.infer<typeof zFieldType>;
@@ -122,38 +120,6 @@ export const isFieldType = (value: unknown): value is FieldType =>
   zFieldType.safeParse(value).success ||
   zReservedFieldType.safeParse(value).success;
 
-/**
- * An input field template is generated on each page load from the OpenAPI schema.
- *
- * The template provides the field type and other field metadata (e.g. title, description,
- * maximum length, pattern to match, etc).
- */
-export type InputFieldTemplate =
-  | IntegerInputFieldTemplate
-  | FloatInputFieldTemplate
-  | StringInputFieldTemplate
-  | BooleanInputFieldTemplate
-  | ImageInputFieldTemplate
-  | DenoiseMaskInputFieldTemplate
-  | LatentsInputFieldTemplate
-  | ConditioningInputFieldTemplate
-  | UNetInputFieldTemplate
-  | ClipInputFieldTemplate
-  | VaeInputFieldTemplate
-  | ControlInputFieldTemplate
-  | EnumInputFieldTemplate
-  | MainModelInputFieldTemplate
-  | SDXLMainModelInputFieldTemplate
-  | SDXLRefinerModelInputFieldTemplate
-  | VaeModelInputFieldTemplate
-  | LoRAModelInputFieldTemplate
-  | ControlNetModelInputFieldTemplate
-  | CollectionInputFieldTemplate
-  | CollectionItemInputFieldTemplate
-  | ColorInputFieldTemplate
-  | ImageCollectionInputFieldTemplate
-  | SchedulerInputFieldTemplate;
-
 /**
  * Indicates the kind of input(s) this field may have.
  */
@@ -232,24 +198,88 @@ export const zIntegerInputFieldValue = zInputFieldValueBase.extend({
 });
 export type IntegerInputFieldValue = z.infer<typeof zIntegerInputFieldValue>;
 
+export const zIntegerCollectionInputFieldValue = zInputFieldValueBase.extend({
+  type: z.literal('IntegerCollection'),
+  value: z.array(z.number().int()).optional(),
+});
+export type IntegerCollectionInputFieldValue = z.infer<
+  typeof zIntegerCollectionInputFieldValue
+>;
+
+export const zIntegerPolymorphicInputFieldValue = zInputFieldValueBase.extend({
+  type: z.literal('IntegerPolymorphic'),
+  value: z.union([z.number().int(), z.array(z.number().int())]).optional(),
+});
+export type IntegerPolymorphicInputFieldValue = z.infer<
+  typeof zIntegerPolymorphicInputFieldValue
+>;
+
 export const zFloatInputFieldValue = zInputFieldValueBase.extend({
   type: z.literal('float'),
   value: z.number().optional(),
 });
 export type FloatInputFieldValue = z.infer<typeof zFloatInputFieldValue>;
 
+export const zFloatCollectionInputFieldValue = zInputFieldValueBase.extend({
+  type: z.literal('FloatCollection'),
+  value: z.array(z.number()).optional(),
+});
+export type FloatCollectionInputFieldValue = z.infer<
+  typeof zFloatCollectionInputFieldValue
+>;
+
+export const zFloatPolymorphicInputFieldValue = zInputFieldValueBase.extend({
+  type: z.literal('FloatPolymorphic'),
+  value: z.union([z.number(), z.array(z.number())]).optional(),
+});
+export type FloatPolymorphicInputFieldValue = z.infer<
+  typeof zFloatPolymorphicInputFieldValue
+>;
+
 export const zStringInputFieldValue = zInputFieldValueBase.extend({
   type: z.literal('string'),
   value: z.string().optional(),
 });
 export type StringInputFieldValue = z.infer<typeof zStringInputFieldValue>;
 
+export const zStringCollectionInputFieldValue = zInputFieldValueBase.extend({
+  type: z.literal('StringCollection'),
+  value: z.array(z.string()).optional(),
+});
+export type StringCollectionInputFieldValue = z.infer<
+  typeof zStringCollectionInputFieldValue
+>;
+
+export const zStringPolymorphicInputFieldValue = zInputFieldValueBase.extend({
+  type: z.literal('StringPolymorphic'),
+  value: z.union([z.string(), z.array(z.string())]).optional(),
+});
+export type StringPolymorphicInputFieldValue = z.infer<
+  typeof zStringPolymorphicInputFieldValue
+>;
+
 export const zBooleanInputFieldValue = zInputFieldValueBase.extend({
   type: z.literal('boolean'),
   value: z.boolean().optional(),
 });
 export type BooleanInputFieldValue = z.infer<typeof zBooleanInputFieldValue>;
 
+export const zBooleanCollectionInputFieldValue = zInputFieldValueBase.extend({
+  type: z.literal('BooleanCollection'),
+  value: z.array(z.boolean()).optional(),
+});
+export type BooleanCollectionInputFieldValue = z.infer<
+  typeof zBooleanCollectionInputFieldValue
+>;
+
+export const zBooleanPolymorphicInputFieldValue = zInputFieldValueBase.extend({
+  type: z.literal('BooleanPolymorphic'),
+  value: z.union([z.boolean(), z.array(z.boolean())]).optional(),
+});
+export type BooleanPolymorphicInputFieldValue = z.infer<
+  typeof zBooleanPolymorphicInputFieldValue
+>;
+
 export const zEnumInputFieldValue = zInputFieldValueBase.extend({
   type: z.literal('enum'),
   value: z.union([z.string(), z.number()]).optional(),
@@ -262,6 +292,22 @@ export const zLatentsInputFieldValue = zInputFieldValueBase.extend({
 });
 export type LatentsInputFieldValue = z.infer<typeof zLatentsInputFieldValue>;
 
+export const zLatentsCollectionInputFieldValue = zInputFieldValueBase.extend({
+  type: z.literal('LatentsCollection'),
+  value: z.array(zLatentsField).optional(),
+});
+export type LatentsCollectionInputFieldValue = z.infer<
+  typeof zLatentsCollectionInputFieldValue
+>;
+
+export const zLatentsPolymorphicInputFieldValue = zInputFieldValueBase.extend({
+  type: z.literal('LatentsPolymorphic'),
+  value: z.union([zLatentsField, z.array(zLatentsField)]).optional(),
+});
+export type LatentsPolymorphicInputFieldValue = z.infer<
+  typeof zLatentsPolymorphicInputFieldValue
+>;
+
 export const zDenoiseMaskInputFieldValue = zInputFieldValueBase.extend({
   type: z.literal('DenoiseMaskField'),
   value: zDenoiseMaskField.optional(),
@@ -278,6 +324,26 @@ export type ConditioningInputFieldValue = z.infer<
   typeof zConditioningInputFieldValue
 >;
 
+export const zConditioningCollectionInputFieldValue =
+  zInputFieldValueBase.extend({
+    type: z.literal('ConditioningCollection'),
+    value: z.array(zConditioningField).optional(),
+  });
+export type ConditioningCollectionInputFieldValue = z.infer<
+  typeof zConditioningCollectionInputFieldValue
+>;
+
+export const zConditioningPolymorphicInputFieldValue =
+  zInputFieldValueBase.extend({
+    type: z.literal('ConditioningPolymorphic'),
+    value: z
+      .union([zConditioningField, z.array(zConditioningField)])
+      .optional(),
+  });
+export type ConditioningPolymorphicInputFieldValue = z.infer<
+  typeof zConditioningPolymorphicInputFieldValue
+>;
+
 export const zControlNetModel = zModelIdentifier;
 export type ControlNetModel = z.infer<typeof zControlNetModel>;
 
@@ -302,6 +368,22 @@ export const zControlInputFieldValue = zInputFieldValueBase.extend({
 });
 export type ControlInputFieldValue = z.infer<typeof zControlInputFieldValue>;
 
+export const zControlPolymorphicInputFieldValue = zInputFieldValueBase.extend({
+  type: z.literal('ControlPolymorphic'),
+  value: z.union([zControlField, z.array(zControlField)]).optional(),
+});
+export type ControlPolymorphicInputFieldValue = z.infer<
+  typeof zControlPolymorphicInputFieldValue
+>;
+
+export const zControlCollectionInputFieldValue = zInputFieldValueBase.extend({
+  type: z.literal('ControlCollection'),
+  value: z.array(zControlField).optional(),
+});
+export type ControlCollectionInputFieldValue = z.infer<
+  typeof zControlCollectionInputFieldValue
+>;
+
 export const zModelType = z.enum([
   'onnx',
   'main',
@@ -381,6 +463,14 @@ export const zImageInputFieldValue = zInputFieldValueBase.extend({
 });
 export type ImageInputFieldValue = z.infer<typeof zImageInputFieldValue>;
 
+export const zImagePolymorphicInputFieldValue = zInputFieldValueBase.extend({
+  type: z.literal('ImagePolymorphic'),
+  value: z.union([zImageField, z.array(zImageField)]).optional(),
+});
+export type ImagePolymorphicInputFieldValue = z.infer<
+  typeof zImagePolymorphicInputFieldValue
+>;
+
 export const zImageCollectionInputFieldValue = zInputFieldValueBase.extend({
   type: z.literal('ImageCollection'),
   value: z.array(zImageField).optional(),
@@ -473,6 +563,22 @@ export const zColorInputFieldValue = zInputFieldValueBase.extend({
 });
 export type ColorInputFieldValue = z.infer<typeof zColorInputFieldValue>;
 
+export const zColorCollectionInputFieldValue = zInputFieldValueBase.extend({
+  type: z.literal('ColorCollection'),
+  value: z.array(zColorField).optional(),
+});
+export type ColorCollectionInputFieldValue = z.infer<
+  typeof zColorCollectionInputFieldValue
+>;
+
+export const zColorPolymorphicInputFieldValue = zInputFieldValueBase.extend({
+  type: z.literal('ColorPolymorphic'),
+  value: z.union([zColorField, z.array(zColorField)]).optional(),
+});
+export type ColorPolymorphicInputFieldValue = z.infer<
+  typeof zColorPolymorphicInputFieldValue
+>;
+
 export const zSchedulerInputFieldValue = zInputFieldValueBase.extend({
   type: z.literal('Scheduler'),
   value: zScheduler.optional(),
@@ -482,30 +588,47 @@ export type SchedulerInputFieldValue = z.infer<
 >;
 
 export const zInputFieldValue = z.discriminatedUnion('type', [
-  zIntegerInputFieldValue,
+  zBooleanCollectionInputFieldValue,
-  zFloatInputFieldValue,
-  zStringInputFieldValue,
   zBooleanInputFieldValue,
-  zImageInputFieldValue,
+  zBooleanPolymorphicInputFieldValue,
-  zLatentsInputFieldValue,
-  zDenoiseMaskInputFieldValue,
-  zConditioningInputFieldValue,
-  zUNetInputFieldValue,
   zClipInputFieldValue,
-  zVaeInputFieldValue,
-  zControlInputFieldValue,
-  zEnumInputFieldValue,
-  zMainModelInputFieldValue,
-  zSDXLMainModelInputFieldValue,
-  zSDXLRefinerModelInputFieldValue,
-  zVaeModelInputFieldValue,
-  zLoRAModelInputFieldValue,
-  zControlNetModelInputFieldValue,
   zCollectionInputFieldValue,
   zCollectionItemInputFieldValue,
   zColorInputFieldValue,
+  zColorCollectionInputFieldValue,
+  zColorPolymorphicInputFieldValue,
+  zConditioningInputFieldValue,
+  zConditioningCollectionInputFieldValue,
+  zConditioningPolymorphicInputFieldValue,
+  zControlInputFieldValue,
+  zControlNetModelInputFieldValue,
+  zControlCollectionInputFieldValue,
+  zControlPolymorphicInputFieldValue,
+  zDenoiseMaskInputFieldValue,
+  zEnumInputFieldValue,
+  zFloatCollectionInputFieldValue,
+  zFloatInputFieldValue,
+  zFloatPolymorphicInputFieldValue,
   zImageCollectionInputFieldValue,
+  zImagePolymorphicInputFieldValue,
+  zImageInputFieldValue,
+  zIntegerCollectionInputFieldValue,
+  zIntegerPolymorphicInputFieldValue,
+  zIntegerInputFieldValue,
+  zLatentsInputFieldValue,
+  zLatentsCollectionInputFieldValue,
+  zLatentsPolymorphicInputFieldValue,
+  zLoRAModelInputFieldValue,
+  zMainModelInputFieldValue,
   zSchedulerInputFieldValue,
+  zSDXLMainModelInputFieldValue,
+  zSDXLRefinerModelInputFieldValue,
+  zStringCollectionInputFieldValue,
+  zStringPolymorphicInputFieldValue,
+  zStringInputFieldValue,
+  zUNetInputFieldValue,
+  zVaeInputFieldValue,
+  zVaeModelInputFieldValue,
 ]);
 
 export type InputFieldValue = z.infer<typeof zInputFieldValue>;
@@ -514,7 +637,6 @@ export type InputFieldTemplateBase = {
   name: string;
   title: string;
   description: string;
-  type: FieldType;
   required: boolean;
   fieldKind: 'input';
 } & _InputField;
@@ -529,6 +651,19 @@ export type IntegerInputFieldTemplate = InputFieldTemplateBase & {
   exclusiveMinimum?: boolean;
 };
 
+export type IntegerCollectionInputFieldTemplate = InputFieldTemplateBase & {
+  type: 'IntegerCollection';
+  default: number[];
+  item_default?: number;
+};
+
+export type IntegerPolymorphicInputFieldTemplate = Omit<
+  IntegerInputFieldTemplate,
+  'type'
+> & {
+  type: 'IntegerPolymorphic';
+};
+
 export type FloatInputFieldTemplate = InputFieldTemplateBase & {
   type: 'float';
   default: number;
@@ -539,6 +674,19 @@ export type FloatInputFieldTemplate = InputFieldTemplateBase & {
   exclusiveMinimum?: boolean;
 };
 
+export type FloatCollectionInputFieldTemplate = InputFieldTemplateBase & {
+  type: 'FloatCollection';
+  default: number[];
+  item_default?: number;
+};
+
+export type FloatPolymorphicInputFieldTemplate = Omit<
+  FloatInputFieldTemplate,
+  'type'
+> & {
+  type: 'FloatPolymorphic';
+};
+
 export type StringInputFieldTemplate = InputFieldTemplateBase & {
   type: 'string';
   default: string;
@@ -547,19 +695,53 @@ export type StringInputFieldTemplate = InputFieldTemplateBase & {
   pattern?: string;
 };
 
+export type StringCollectionInputFieldTemplate = InputFieldTemplateBase & {
+  type: 'StringCollection';
+  default: string[];
+  item_default?: string;
+};
+
+export type StringPolymorphicInputFieldTemplate = Omit<
+  StringInputFieldTemplate,
+  'type'
+> & {
+  type: 'StringPolymorphic';
+};
+
 export type BooleanInputFieldTemplate = InputFieldTemplateBase & {
   default: boolean;
   type: 'boolean';
 };
 
+export type BooleanCollectionInputFieldTemplate = InputFieldTemplateBase & {
+  type: 'BooleanCollection';
+  default: boolean[];
+  item_default?: boolean;
+};
+
+export type BooleanPolymorphicInputFieldTemplate = Omit<
+  BooleanInputFieldTemplate,
+  'type'
+> & {
+  type: 'BooleanPolymorphic';
+};
+
 export type ImageInputFieldTemplate = InputFieldTemplateBase & {
-  default: ImageDTO;
+  default: ImageField;
   type: 'ImageField';
 };
 
 export type ImageCollectionInputFieldTemplate = InputFieldTemplateBase & {
   default: ImageField[];
   type: 'ImageCollection';
+  item_default?: ImageField;
+};
+
+export type ImagePolymorphicInputFieldTemplate = Omit<
+  ImageInputFieldTemplate,
+  'type'
+> & {
+  type: 'ImagePolymorphic';
 };
 
 export type DenoiseMaskInputFieldTemplate = InputFieldTemplateBase & {
@@ -568,15 +750,40 @@ export type DenoiseMaskInputFieldTemplate = InputFieldTemplateBase & {
 };
 
 export type LatentsInputFieldTemplate = InputFieldTemplateBase & {
-  default: string;
+  default: LatentsField;
   type: 'LatentsField';
 };
 
+export type LatentsCollectionInputFieldTemplate = InputFieldTemplateBase & {
+  default: LatentsField[];
+  type: 'LatentsCollection';
+  item_default?: LatentsField;
+};
+
+export type LatentsPolymorphicInputFieldTemplate = InputFieldTemplateBase & {
+  default: LatentsField;
+  type: 'LatentsPolymorphic';
+};
+
 export type ConditioningInputFieldTemplate = InputFieldTemplateBase & {
   default: undefined;
   type: 'ConditioningField';
 };
 
+export type ConditioningCollectionInputFieldTemplate =
+  InputFieldTemplateBase & {
+    default: ConditioningField[];
+    type: 'ConditioningCollection';
+    item_default?: ConditioningField;
+  };
+
+export type ConditioningPolymorphicInputFieldTemplate = Omit<
+  ConditioningInputFieldTemplate,
+  'type'
+> & {
+  type: 'ConditioningPolymorphic';
+};
+
 export type UNetInputFieldTemplate = InputFieldTemplateBase & {
   default: undefined;
   type: 'UNetField';
@@ -597,6 +804,19 @@ export type ControlInputFieldTemplate = InputFieldTemplateBase & {
   type: 'ControlField';
 };
 
+export type ControlCollectionInputFieldTemplate = InputFieldTemplateBase & {
+  default: undefined;
+  type: 'ControlCollection';
+  item_default?: ControlField;
+};
+
+export type ControlPolymorphicInputFieldTemplate = Omit<
+  ControlInputFieldTemplate,
+  'type'
+> & {
+  type: 'ControlPolymorphic';
+};
+
 export type EnumInputFieldTemplate = InputFieldTemplateBase & {
   default: string | number;
   type: 'enum';
@@ -649,6 +869,18 @@ export type ColorInputFieldTemplate = InputFieldTemplateBase & {
   type: 'ColorField';
 };
 
+export type ColorPolymorphicInputFieldTemplate = Omit<
+  ColorInputFieldTemplate,
+  'type'
+> & {
+  type: 'ColorPolymorphic';
+};
+
+export type ColorCollectionInputFieldTemplate = InputFieldTemplateBase & {
+  default: [];
+  type: 'ColorCollection';
+};
+
 export type SchedulerInputFieldTemplate = InputFieldTemplateBase & {
   default: SchedulerParam;
   type: 'Scheduler';
@@ -659,6 +891,55 @@ export type WorkflowInputFieldTemplate = InputFieldTemplateBase & {
   type: 'WorkflowField';
 };
 
+/**
+ * An input field template is generated on each page load from the OpenAPI schema.
+ *
+ * The template provides the field type and other field metadata (e.g. title, description,
+ * maximum length, pattern to match, etc).
+ */
+export type InputFieldTemplate =
+  | BooleanCollectionInputFieldTemplate
+  | BooleanPolymorphicInputFieldTemplate
+  | BooleanInputFieldTemplate
+  | ClipInputFieldTemplate
+  | CollectionInputFieldTemplate
+  | CollectionItemInputFieldTemplate
+  | ColorInputFieldTemplate
+  | ColorCollectionInputFieldTemplate
+  | ColorPolymorphicInputFieldTemplate
+  | ConditioningInputFieldTemplate
+  | ConditioningCollectionInputFieldTemplate
+  | ConditioningPolymorphicInputFieldTemplate
+  | ControlInputFieldTemplate
+  | ControlCollectionInputFieldTemplate
+  | ControlNetModelInputFieldTemplate
+  | ControlPolymorphicInputFieldTemplate
+  | DenoiseMaskInputFieldTemplate
+  | EnumInputFieldTemplate
+  | FloatCollectionInputFieldTemplate
+  | FloatInputFieldTemplate
+  | FloatPolymorphicInputFieldTemplate
+  | ImageCollectionInputFieldTemplate
+  | ImagePolymorphicInputFieldTemplate
+  | ImageInputFieldTemplate
+  | IntegerCollectionInputFieldTemplate
+  | IntegerPolymorphicInputFieldTemplate
+  | IntegerInputFieldTemplate
+  | LatentsInputFieldTemplate
+  | LatentsCollectionInputFieldTemplate
+  | LatentsPolymorphicInputFieldTemplate
+  | LoRAModelInputFieldTemplate
+  | MainModelInputFieldTemplate
+  | SchedulerInputFieldTemplate
+  | SDXLMainModelInputFieldTemplate
+  | SDXLRefinerModelInputFieldTemplate
+  | StringCollectionInputFieldTemplate
+  | StringPolymorphicInputFieldTemplate
+  | StringInputFieldTemplate
+  | UNetInputFieldTemplate
+  | VaeInputFieldTemplate
+  | VaeModelInputFieldTemplate;
+
 export const isInputFieldValue = (
   field?: InputFieldValue | OutputFieldValue
 ): field is InputFieldValue => Boolean(field && field.fieldKind === 'input');
@@ -731,8 +1012,22 @@ export type InvocationSchemaObject = (
 ) & { class: 'invocation' };
 
 export const isSchemaObject = (
-  obj: OpenAPIV3.ReferenceObject | OpenAPIV3.SchemaObject
+  obj: OpenAPIV3.ReferenceObject | OpenAPIV3.SchemaObject | undefined
-): obj is OpenAPIV3.SchemaObject => !('$ref' in obj);
+): obj is OpenAPIV3.SchemaObject => Boolean(obj && !('$ref' in obj));
+
+export const isArraySchemaObject = (
+  obj: OpenAPIV3.ReferenceObject | OpenAPIV3.SchemaObject | undefined
+): obj is OpenAPIV3.ArraySchemaObject =>
+  Boolean(obj && !('$ref' in obj) && obj.type === 'array');
+
+export const isNonArraySchemaObject = (
+  obj: OpenAPIV3.ReferenceObject | OpenAPIV3.SchemaObject | undefined
+): obj is OpenAPIV3.NonArraySchemaObject =>
+  Boolean(obj && !('$ref' in obj) && obj.type !== 'array');
+
+export const isRefObject = (
+  obj: OpenAPIV3.ReferenceObject | OpenAPIV3.SchemaObject | undefined
+): obj is OpenAPIV3.ReferenceObject => Boolean(obj && '$ref' in obj);
 
 export const isInvocationSchemaObject = (
   obj:

invokeai/frontend/web/src/features/nodes/util/fieldTemplateBuilders.ts

@@ -1,5 +1,14 @@
+import { isBoolean, isInteger, isNumber, isString } from 'lodash-es';
 import { OpenAPIV3 } from 'openapi-types';
 import {
+  COLLECTION_MAP,
+  POLYMORPHIC_TYPES,
+  SINGLE_TO_POLYMORPHIC_MAP,
+  isCollectionItemType,
+  isPolymorphicItemType,
+} from '../types/constants';
+import {
+  BooleanCollectionInputFieldTemplate,
   BooleanInputFieldTemplate,
   ClipInputFieldTemplate,
   CollectionInputFieldTemplate,
@@ -11,10 +20,13 @@ import {
   DenoiseMaskInputFieldTemplate,
   EnumInputFieldTemplate,
   FieldType,
+  FloatCollectionInputFieldTemplate,
+  FloatPolymorphicInputFieldTemplate,
   FloatInputFieldTemplate,
   ImageCollectionInputFieldTemplate,
   ImageInputFieldTemplate,
   InputFieldTemplateBase,
+  IntegerCollectionInputFieldTemplate,
   IntegerInputFieldTemplate,
   InvocationFieldSchema,
   InvocationSchemaObject,
@@ -24,11 +36,32 @@ import {
   SDXLMainModelInputFieldTemplate,
   SDXLRefinerModelInputFieldTemplate,
   SchedulerInputFieldTemplate,
+  StringCollectionInputFieldTemplate,
   StringInputFieldTemplate,
   UNetInputFieldTemplate,
   VaeInputFieldTemplate,
   VaeModelInputFieldTemplate,
+  isArraySchemaObject,
+  isNonArraySchemaObject,
+  isRefObject,
+  isSchemaObject,
+  ControlPolymorphicInputFieldTemplate,
+  ColorPolymorphicInputFieldTemplate,
+  ColorCollectionInputFieldTemplate,
+  IntegerPolymorphicInputFieldTemplate,
+  StringPolymorphicInputFieldTemplate,
+  BooleanPolymorphicInputFieldTemplate,
+  ImagePolymorphicInputFieldTemplate,
+  LatentsPolymorphicInputFieldTemplate,
+  LatentsCollectionInputFieldTemplate,
+  ConditioningPolymorphicInputFieldTemplate,
+  ConditioningCollectionInputFieldTemplate,
+  ControlCollectionInputFieldTemplate,
+  ImageField,
+  LatentsField,
+  ConditioningField,
 } from '../types/types';
+import { ControlField } from 'services/api/types';
 
 export type BaseFieldProperties = 'name' | 'title' | 'description';
 
@@ -45,15 +78,8 @@ export type BuildInputFieldArg = {
  * @example
  * refObjectToFieldType({ "$ref": "#/components/schemas/ImageField" }) --> 'ImageField'
  */
-export const refObjectToFieldType = (
+export const refObjectToSchemaName = (refObject: OpenAPIV3.ReferenceObject) =>
-  refObject: OpenAPIV3.ReferenceObject
+  refObject.$ref.split('/').slice(-1)[0];
-): FieldType => {
-  const name = refObject.$ref.split('/').slice(-1)[0];
-  if (!name) {
-    throw `Unknown field type: ${name}`;
-  }
-  return name as FieldType;
-};
 
 const buildIntegerInputFieldTemplate = ({
   schemaObject,
@@ -88,6 +114,57 @@ const buildIntegerInputFieldTemplate = ({
   return template;
 };
 
+const buildIntegerPolymorphicInputFieldTemplate = ({
+  schemaObject,
+  baseField,
+}: BuildInputFieldArg): IntegerPolymorphicInputFieldTemplate => {
+  const template: IntegerPolymorphicInputFieldTemplate = {
+    ...baseField,
+    type: 'IntegerPolymorphic',
+    default: schemaObject.default ?? 0,
+  };
+
+  if (schemaObject.multipleOf !== undefined) {
+    template.multipleOf = schemaObject.multipleOf;
+  }
+
+  if (schemaObject.maximum !== undefined) {
+    template.maximum = schemaObject.maximum;
+  }
+
+  if (schemaObject.exclusiveMaximum !== undefined) {
+    template.exclusiveMaximum = schemaObject.exclusiveMaximum;
+  }
+
+  if (schemaObject.minimum !== undefined) {
+    template.minimum = schemaObject.minimum;
+  }
+
+  if (schemaObject.exclusiveMinimum !== undefined) {
+    template.exclusiveMinimum = schemaObject.exclusiveMinimum;
+  }
+
+  return template;
+};
+
+const buildIntegerCollectionInputFieldTemplate = ({
+  schemaObject,
+  baseField,
+}: BuildInputFieldArg): IntegerCollectionInputFieldTemplate => {
+  const item_default =
+    isNumber(schemaObject.item_default) && isInteger(schemaObject.item_default)
+      ? schemaObject.item_default
+      : 0;
+  const template: IntegerCollectionInputFieldTemplate = {
+    ...baseField,
+    type: 'IntegerCollection',
+    default: schemaObject.default ?? [],
+    item_default,
+  };
+
+  return template;
+};
+
 const buildFloatInputFieldTemplate = ({
   schemaObject,
   baseField,
@@ -121,6 +198,54 @@ const buildFloatInputFieldTemplate = ({
   return template;
 };
 
+const buildFloatPolymorphicInputFieldTemplate = ({
+  schemaObject,
+  baseField,
+}: BuildInputFieldArg): FloatPolymorphicInputFieldTemplate => {
+  const template: FloatPolymorphicInputFieldTemplate = {
+    ...baseField,
+    type: 'FloatPolymorphic',
+    default: schemaObject.default ?? 0,
+  };
+  if (schemaObject.multipleOf !== undefined) {
+    template.multipleOf = schemaObject.multipleOf;
+  }
+
+  if (schemaObject.maximum !== undefined) {
+    template.maximum = schemaObject.maximum;
+  }
+
+  if (schemaObject.exclusiveMaximum !== undefined) {
+    template.exclusiveMaximum = schemaObject.exclusiveMaximum;
+  }
+
+  if (schemaObject.minimum !== undefined) {
+    template.minimum = schemaObject.minimum;
+  }
+
+  if (schemaObject.exclusiveMinimum !== undefined) {
+    template.exclusiveMinimum = schemaObject.exclusiveMinimum;
+  }
+  return template;
+};
+
+const buildFloatCollectionInputFieldTemplate = ({
+  schemaObject,
+  baseField,
+}: BuildInputFieldArg): FloatCollectionInputFieldTemplate => {
+  const item_default = isNumber(schemaObject.item_default)
+    ? schemaObject.item_default
+    : 0;
+  const template: FloatCollectionInputFieldTemplate = {
+    ...baseField,
+    type: 'FloatCollection',
+    default: schemaObject.default ?? [],
+    item_default,
+  };
+
+  return template;
+};
+
 const buildStringInputFieldTemplate = ({
   schemaObject,
   baseField,
@@ -146,6 +271,48 @@ const buildStringInputFieldTemplate = ({
   return template;
 };
 
+const buildStringPolymorphicInputFieldTemplate = ({
+  schemaObject,
+  baseField,
+}: BuildInputFieldArg): StringPolymorphicInputFieldTemplate => {
+  const template: StringPolymorphicInputFieldTemplate = {
+    ...baseField,
+    type: 'StringPolymorphic',
+    default: schemaObject.default ?? '',
+  };
+
+  if (schemaObject.minLength !== undefined) {
+    template.minLength = schemaObject.minLength;
+  }
+
+  if (schemaObject.maxLength !== undefined) {
+    template.maxLength = schemaObject.maxLength;
+  }
+
+  if (schemaObject.pattern !== undefined) {
+    template.pattern = schemaObject.pattern;
+  }
+
+  return template;
+};
+
+const buildStringCollectionInputFieldTemplate = ({
+  schemaObject,
+  baseField,
+}: BuildInputFieldArg): StringCollectionInputFieldTemplate => {
+  const item_default = isString(schemaObject.item_default)
+    ? schemaObject.item_default
+    : '';
+  const template: StringCollectionInputFieldTemplate = {
+    ...baseField,
+    type: 'StringCollection',
+    default: schemaObject.default ?? [],
+    item_default,
+  };
+
+  return template;
+};
+
 const buildBooleanInputFieldTemplate = ({
   schemaObject,
   baseField,
@@ -159,6 +326,37 @@ const buildBooleanInputFieldTemplate = ({
   return template;
 };
 
+const buildBooleanPolymorphicInputFieldTemplate = ({
+  schemaObject,
+  baseField,
+}: BuildInputFieldArg): BooleanPolymorphicInputFieldTemplate => {
+  const template: BooleanPolymorphicInputFieldTemplate = {
+    ...baseField,
+    type: 'BooleanPolymorphic',
+    default: schemaObject.default ?? false,
+  };
+
+  return template;
+};
+
+const buildBooleanCollectionInputFieldTemplate = ({
+  schemaObject,
+  baseField,
+}: BuildInputFieldArg): BooleanCollectionInputFieldTemplate => {
+  const item_default =
+    schemaObject.item_default && isBoolean(schemaObject.item_default)
+      ? schemaObject.item_default
+      : false;
+  const template: BooleanCollectionInputFieldTemplate = {
+    ...baseField,
+    type: 'BooleanCollection',
+    default: schemaObject.default ?? [],
+    item_default,
+  };
+
+  return template;
+};
+
 const buildMainModelInputFieldTemplate = ({
   schemaObject,
   baseField,
@@ -250,6 +448,19 @@ const buildImageInputFieldTemplate = ({
   return template;
 };
 
+const buildImagePolymorphicInputFieldTemplate = ({
+  schemaObject,
+  baseField,
+}: BuildInputFieldArg): ImagePolymorphicInputFieldTemplate => {
+  const template: ImagePolymorphicInputFieldTemplate = {
+    ...baseField,
+    type: 'ImagePolymorphic',
+    default: schemaObject.default ?? undefined,
+  };
+
+  return template;
+};
+
 const buildImageCollectionInputFieldTemplate = ({
   schemaObject,
   baseField,
@@ -257,7 +468,8 @@ const buildImageCollectionInputFieldTemplate = ({
   const template: ImageCollectionInputFieldTemplate = {
     ...baseField,
     type: 'ImageCollection',
-    default: schemaObject.default ?? undefined,
+    default: schemaObject.default ?? [],
+    item_default: (schemaObject.item_default as ImageField) ?? undefined,
   };
 
   return template;
@@ -289,6 +501,33 @@ const buildLatentsInputFieldTemplate = ({
   return template;
 };
 
+const buildLatentsPolymorphicInputFieldTemplate = ({
+  schemaObject,
+  baseField,
+}: BuildInputFieldArg): LatentsPolymorphicInputFieldTemplate => {
+  const template: LatentsPolymorphicInputFieldTemplate = {
+    ...baseField,
+    type: 'LatentsPolymorphic',
+    default: schemaObject.default ?? undefined,
+  };
+
+  return template;
+};
+
+const buildLatentsCollectionInputFieldTemplate = ({
+  schemaObject,
+  baseField,
+}: BuildInputFieldArg): LatentsCollectionInputFieldTemplate => {
+  const template: LatentsCollectionInputFieldTemplate = {
+    ...baseField,
+    type: 'LatentsCollection',
+    default: schemaObject.default ?? [],
+    item_default: (schemaObject.item_default as LatentsField) ?? undefined,
+  };
+
+  return template;
+};
+
 const buildConditioningInputFieldTemplate = ({
   schemaObject,
   baseField,
@@ -302,6 +541,33 @@ const buildConditioningInputFieldTemplate = ({
   return template;
 };
 
+const buildConditioningPolymorphicInputFieldTemplate = ({
+  schemaObject,
+  baseField,
+}: BuildInputFieldArg): ConditioningPolymorphicInputFieldTemplate => {
+  const template: ConditioningPolymorphicInputFieldTemplate = {
+    ...baseField,
+    type: 'ConditioningPolymorphic',
+    default: schemaObject.default ?? undefined,
+  };
+
+  return template;
+};
+
+const buildConditioningCollectionInputFieldTemplate = ({
+  schemaObject,
+  baseField,
+}: BuildInputFieldArg): ConditioningCollectionInputFieldTemplate => {
+  const template: ConditioningCollectionInputFieldTemplate = {
+    ...baseField,
+    type: 'ConditioningCollection',
+    default: schemaObject.default ?? [],
+    item_default: (schemaObject.item_default as ConditioningField) ?? undefined,
+  };
+
+  return template;
+};
+
 const buildUNetInputFieldTemplate = ({
   schemaObject,
   baseField,
@@ -355,6 +621,33 @@ const buildControlInputFieldTemplate = ({
   return template;
 };
 
+const buildControlPolymorphicInputFieldTemplate = ({
+  schemaObject,
+  baseField,
+}: BuildInputFieldArg): ControlPolymorphicInputFieldTemplate => {
+  const template: ControlPolymorphicInputFieldTemplate = {
+    ...baseField,
+    type: 'ControlPolymorphic',
+    default: schemaObject.default ?? undefined,
+  };
+
+  return template;
+};
+
+const buildControlCollectionInputFieldTemplate = ({
+  schemaObject,
+  baseField,
+}: BuildInputFieldArg): ControlCollectionInputFieldTemplate => {
+  const template: ControlCollectionInputFieldTemplate = {
+    ...baseField,
+    type: 'ControlCollection',
+    default: schemaObject.default ?? [],
+    item_default: (schemaObject.item_default as ControlField) ?? undefined,
+  };
+
+  return template;
+};
+
 const buildEnumInputFieldTemplate = ({
   schemaObject,
   baseField,
@@ -408,6 +701,32 @@ const buildColorInputFieldTemplate = ({
   return template;
 };
 
+const buildColorPolymorphicInputFieldTemplate = ({
+  schemaObject,
+  baseField,
+}: BuildInputFieldArg): ColorPolymorphicInputFieldTemplate => {
+  const template: ColorPolymorphicInputFieldTemplate = {
+    ...baseField,
+    type: 'ColorPolymorphic',
+    default: schemaObject.default ?? { r: 127, g: 127, b: 127, a: 255 },
+  };
+
+  return template;
+};
+
+const buildColorCollectionInputFieldTemplate = ({
+  schemaObject,
+  baseField,
+}: BuildInputFieldArg): ColorCollectionInputFieldTemplate => {
+  const template: ColorCollectionInputFieldTemplate = {
+    ...baseField,
+    type: 'ColorCollection',
+    default: schemaObject.default ?? [],
+  };
+
+  return template;
+};
+
 const buildSchedulerInputFieldTemplate = ({
   schemaObject,
   baseField,
@@ -421,45 +740,138 @@ const buildSchedulerInputFieldTemplate = ({
   return template;
 };
 
-export const getFieldType = (schemaObject: InvocationFieldSchema): string => {
+export const getFieldType = (
-  let fieldType = '';
+  schemaObject: InvocationFieldSchema
-
+): string | undefined => {
-  const { ui_type } = schemaObject;
+  if (schemaObject?.ui_type) {
-  if (ui_type) {
+    return schemaObject.ui_type;
-    fieldType = ui_type;
   } else if (!schemaObject.type) {
-    // console.log('refObject', schemaObject);
     // if schemaObject has no type, then it should have one of allOf, anyOf, oneOf
+
     if (schemaObject.allOf) {
-      fieldType = refObjectToFieldType(
+      const allOf = schemaObject.allOf;
-        // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+      if (allOf && allOf[0] && isRefObject(allOf[0])) {
-        schemaObject.allOf![0] as OpenAPIV3.ReferenceObject
+        return refObjectToSchemaName(allOf[0]);
-      );
+      }
     } else if (schemaObject.anyOf) {
-      fieldType = refObjectToFieldType(
+      const anyOf = schemaObject.anyOf;
-        // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+      /**
-        schemaObject.anyOf![0] as OpenAPIV3.ReferenceObject
+       * Handle Polymorphic inputs, eg string | string[]. In OpenAPI, this is:
-      );
+       * - an `anyOf` with two items
-    } else if (schemaObject.oneOf) {
+       * - one is an `ArraySchemaObject` with a single `SchemaObject or ReferenceObject` of type T in its `items`
-      fieldType = refObjectToFieldType(
+       * - the other is a `SchemaObject` or `ReferenceObject` of type T
-        // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+       *
-        schemaObject.oneOf![0] as OpenAPIV3.ReferenceObject
+       * Any other cases we ignore.
-      );
+       */
+
+      let firstType: string | undefined;
+      let secondType: string | undefined;
+
+      if (isArraySchemaObject(anyOf[0])) {
+        // first is array, second is not
+        const first = anyOf[0].items;
+        const second = anyOf[1];
+        if (isRefObject(first) && isRefObject(second)) {
+          firstType = refObjectToSchemaName(first);
+          secondType = refObjectToSchemaName(second);
+        } else if (
+          isNonArraySchemaObject(first) &&
+          isNonArraySchemaObject(second)
+        ) {
+          firstType = first.type;
+          secondType = second.type;
+        }
+      } else if (isArraySchemaObject(anyOf[1])) {
+        // first is not array, second is
+        const first = anyOf[0];
+        const second = anyOf[1].items;
+        if (isRefObject(first) && isRefObject(second)) {
+          firstType = refObjectToSchemaName(first);
+          secondType = refObjectToSchemaName(second);
+        } else if (
+          isNonArraySchemaObject(first) &&
+          isNonArraySchemaObject(second)
+        ) {
+          firstType = first.type;
+          secondType = second.type;
+        }
+      }
+      if (firstType === secondType && isPolymorphicItemType(firstType)) {
+        return SINGLE_TO_POLYMORPHIC_MAP[firstType];
+      }
     }
   } else if (schemaObject.enum) {
-    fieldType = 'enum';
+    return 'enum';
   } else if (schemaObject.type) {
     if (schemaObject.type === 'number') {
-      // floats are "number" in OpenAPI, while ints are "integer"
+      // floats are "number" in OpenAPI, while ints are "integer" - we need to distinguish them
-      fieldType = 'float';
+      return 'float';
+    } else if (schemaObject.type === 'array') {
+      const itemType = isSchemaObject(schemaObject.items)
+        ? schemaObject.items.type
+        : refObjectToSchemaName(schemaObject.items);
+
+      if (isCollectionItemType(itemType)) {
+        return COLLECTION_MAP[itemType];
+      }
+
+      return;
     } else {
-      fieldType = schemaObject.type;
+      return schemaObject.type;
     }
   }
-
+  return;
-  return fieldType;
 };
 
+const TEMPLATE_BUILDER_MAP = {
+  boolean: buildBooleanInputFieldTemplate,
+  BooleanCollection: buildBooleanCollectionInputFieldTemplate,
+  BooleanPolymorphic: buildBooleanPolymorphicInputFieldTemplate,
+  ClipField: buildClipInputFieldTemplate,
+  Collection: buildCollectionInputFieldTemplate,
+  CollectionItem: buildCollectionItemInputFieldTemplate,
+  ColorCollection: buildColorCollectionInputFieldTemplate,
+  ColorField: buildColorInputFieldTemplate,
+  ColorPolymorphic: buildColorPolymorphicInputFieldTemplate,
+  ConditioningCollection: buildConditioningCollectionInputFieldTemplate,
+  ConditioningField: buildConditioningInputFieldTemplate,
+  ConditioningPolymorphic: buildConditioningPolymorphicInputFieldTemplate,
+  ControlCollection: buildControlCollectionInputFieldTemplate,
+  ControlField: buildControlInputFieldTemplate,
+  ControlNetModelField: buildControlNetModelInputFieldTemplate,
+  ControlPolymorphic: buildControlPolymorphicInputFieldTemplate,
+  DenoiseMaskField: buildDenoiseMaskInputFieldTemplate,
+  enum: buildEnumInputFieldTemplate,
+  float: buildFloatInputFieldTemplate,
+  FloatCollection: buildFloatCollectionInputFieldTemplate,
+  FloatPolymorphic: buildFloatPolymorphicInputFieldTemplate,
+  ImageCollection: buildImageCollectionInputFieldTemplate,
+  ImageField: buildImageInputFieldTemplate,
+  ImagePolymorphic: buildImagePolymorphicInputFieldTemplate,
+  integer: buildIntegerInputFieldTemplate,
+  IntegerCollection: buildIntegerCollectionInputFieldTemplate,
+  IntegerPolymorphic: buildIntegerPolymorphicInputFieldTemplate,
+  LatentsCollection: buildLatentsCollectionInputFieldTemplate,
+  LatentsField: buildLatentsInputFieldTemplate,
+  LatentsPolymorphic: buildLatentsPolymorphicInputFieldTemplate,
+  LoRAModelField: buildLoRAModelInputFieldTemplate,
+  MainModelField: buildMainModelInputFieldTemplate,
+  Scheduler: buildSchedulerInputFieldTemplate,
+  SDXLMainModelField: buildSDXLMainModelInputFieldTemplate,
+  SDXLRefinerModelField: buildRefinerModelInputFieldTemplate,
+  string: buildStringInputFieldTemplate,
+  StringCollection: buildStringCollectionInputFieldTemplate,
+  StringPolymorphic: buildStringPolymorphicInputFieldTemplate,
+  UNetField: buildUNetInputFieldTemplate,
+  VaeField: buildVaeInputFieldTemplate,
+  VaeModelField: buildVaeModelInputFieldTemplate,
+};
+
+const isTemplatedFieldType = (
+  fieldType: string | undefined
+): fieldType is keyof typeof TEMPLATE_BUILDER_MAP =>
+  Boolean(fieldType && fieldType in TEMPLATE_BUILDER_MAP);
+
 /**
  * Builds an input field from an invocation schema property.
  * @param fieldSchema The schema object
@@ -474,7 +886,8 @@ export const buildInputFieldTemplate = (
   const { input, ui_hidden, ui_component, ui_type, ui_order } = fieldSchema;
 
   const extra = {
-    input,
+    // TODO: Can we support polymorphic inputs in the UI?
+    input: POLYMORPHIC_TYPES.includes(fieldType) ? 'connection' : input,
     ui_hidden,
     ui_component,
     ui_type,
@@ -490,146 +903,12 @@ export const buildInputFieldTemplate = (
     ...extra,
   };
 
-  if (fieldType === 'ImageField') {
+  if (!isTemplatedFieldType(fieldType)) {
-    return buildImageInputFieldTemplate({
+    return;
-      schemaObject: fieldSchema,
-      baseField,
-    });
   }
-  if (fieldType === 'ImageCollection') {
+
-    return buildImageCollectionInputFieldTemplate({
+  return TEMPLATE_BUILDER_MAP[fieldType]({
-      schemaObject: fieldSchema,
+    schemaObject: fieldSchema,
-      baseField,
+    baseField,
-    });
+  });
-  }
-  if (fieldType === 'DenoiseMaskField') {
-    return buildDenoiseMaskInputFieldTemplate({
-      schemaObject: fieldSchema,
-      baseField,
-    });
-  }
-  if (fieldType === 'LatentsField') {
-    return buildLatentsInputFieldTemplate({
-      schemaObject: fieldSchema,
-      baseField,
-    });
-  }
-  if (fieldType === 'ConditioningField') {
-    return buildConditioningInputFieldTemplate({
-      schemaObject: fieldSchema,
-      baseField,
-    });
-  }
-  if (fieldType === 'UNetField') {
-    return buildUNetInputFieldTemplate({
-      schemaObject: fieldSchema,
-      baseField,
-    });
-  }
-  if (fieldType === 'ClipField') {
-    return buildClipInputFieldTemplate({
-      schemaObject: fieldSchema,
-      baseField,
-    });
-  }
-  if (fieldType === 'VaeField') {
-    return buildVaeInputFieldTemplate({ schemaObject: fieldSchema, baseField });
-  }
-  if (fieldType === 'ControlField') {
-    return buildControlInputFieldTemplate({
-      schemaObject: fieldSchema,
-      baseField,
-    });
-  }
-  if (fieldType === 'MainModelField') {
-    return buildMainModelInputFieldTemplate({
-      schemaObject: fieldSchema,
-      baseField,
-    });
-  }
-  if (fieldType === 'SDXLRefinerModelField') {
-    return buildRefinerModelInputFieldTemplate({
-      schemaObject: fieldSchema,
-      baseField,
-    });
-  }
-  if (fieldType === 'SDXLMainModelField') {
-    return buildSDXLMainModelInputFieldTemplate({
-      schemaObject: fieldSchema,
-      baseField,
-    });
-  }
-  if (fieldType === 'VaeModelField') {
-    return buildVaeModelInputFieldTemplate({
-      schemaObject: fieldSchema,
-      baseField,
-    });
-  }
-  if (fieldType === 'LoRAModelField') {
-    return buildLoRAModelInputFieldTemplate({
-      schemaObject: fieldSchema,
-      baseField,
-    });
-  }
-  if (fieldType === 'ControlNetModelField') {
-    return buildControlNetModelInputFieldTemplate({
-      schemaObject: fieldSchema,
-      baseField,
-    });
-  }
-  if (fieldType === 'enum') {
-    return buildEnumInputFieldTemplate({
-      schemaObject: fieldSchema,
-      baseField,
-    });
-  }
-  if (fieldType === 'integer') {
-    return buildIntegerInputFieldTemplate({
-      schemaObject: fieldSchema,
-      baseField,
-    });
-  }
-  if (fieldType === 'float') {
-    return buildFloatInputFieldTemplate({
-      schemaObject: fieldSchema,
-      baseField,
-    });
-  }
-  if (fieldType === 'string') {
-    return buildStringInputFieldTemplate({
-      schemaObject: fieldSchema,
-      baseField,
-    });
-  }
-  if (fieldType === 'boolean') {
-    return buildBooleanInputFieldTemplate({
-      schemaObject: fieldSchema,
-      baseField,
-    });
-  }
-  if (fieldType === 'Collection') {
-    return buildCollectionInputFieldTemplate({
-      schemaObject: fieldSchema,
-      baseField,
-    });
-  }
-  if (fieldType === 'CollectionItem') {
-    return buildCollectionItemInputFieldTemplate({
-      schemaObject: fieldSchema,
-      baseField,
-    });
-  }
-  if (fieldType === 'ColorField') {
-    return buildColorInputFieldTemplate({
-      schemaObject: fieldSchema,
-      baseField,
-    });
-  }
-  if (fieldType === 'Scheduler') {
-    return buildSchedulerInputFieldTemplate({
-      schemaObject: fieldSchema,
-      baseField,
-    });
-  }
-  return;
 };

invokeai/frontend/web/src/features/nodes/util/fieldValueBuilders.ts

@@ -1,104 +1,79 @@
 import { InputFieldTemplate, InputFieldValue } from '../types/types';
 
+const FIELD_VALUE_FALLBACK_MAP = {
+  'enum.number': 0,
+  'enum.string': '',
+  boolean: false,
+  BooleanCollection: [],
+  BooleanPolymorphic: false,
+  ClipField: undefined,
+  Collection: [],
+  CollectionItem: undefined,
+  ColorCollection: [],
+  ColorField: undefined,
+  ColorPolymorphic: undefined,
+  ConditioningCollection: [],
+  ConditioningField: undefined,
+  ConditioningPolymorphic: undefined,
+  ControlCollection: [],
+  ControlField: undefined,
+  ControlNetModelField: undefined,
+  ControlPolymorphic: undefined,
+  DenoiseMaskField: undefined,
+  float: 0,
+  FloatCollection: [],
+  FloatPolymorphic: 0,
+  ImageCollection: [],
+  ImageField: undefined,
+  ImagePolymorphic: undefined,
+  integer: 0,
+  IntegerCollection: [],
+  IntegerPolymorphic: 0,
+  LatentsCollection: [],
+  LatentsField: undefined,
+  LatentsPolymorphic: undefined,
+  LoRAModelField: undefined,
+  MainModelField: undefined,
+  ONNXModelField: undefined,
+  Scheduler: 'euler',
+  SDXLMainModelField: undefined,
+  SDXLRefinerModelField: undefined,
+  string: '',
+  StringCollection: [],
+  StringPolymorphic: '',
+  UNetField: undefined,
+  VaeField: undefined,
+  VaeModelField: undefined,
+};
+
 export const buildInputFieldValue = (
   id: string,
   template: InputFieldTemplate
 ): InputFieldValue => {
-  const fieldValue: InputFieldValue = {
+  // TODO: this should be `fieldValue: InputFieldValue`, but that introduces a TS issue I couldn't
+  // resolve - for some reason, it doesn't like `template.type`, which is the discriminant for both
+  // `InputFieldTemplate` union. It is (type-structurally) equal to the discriminant for the
+  // `InputFieldValue` union, but TS doesn't seem to like it...
+  const fieldValue = {
     id,
     name: template.name,
     type: template.type,
     label: '',
     fieldKind: 'input',
-  };
+  } as InputFieldValue;
-
-  if (template.type === 'string') {
-    fieldValue.value = template.default ?? '';
-  }
-
-  if (template.type === 'integer') {
-    fieldValue.value = template.default ?? 0;
-  }
-
-  if (template.type === 'float') {
-    fieldValue.value = template.default ?? 0;
-  }
-
-  if (template.type === 'boolean') {
-    fieldValue.value = template.default ?? false;
-  }
 
   if (template.type === 'enum') {
     if (template.enumType === 'number') {
-      fieldValue.value = template.default ?? 0;
+      fieldValue.value =
+        template.default ?? FIELD_VALUE_FALLBACK_MAP['enum.number'];
     }
     if (template.enumType === 'string') {
-      fieldValue.value = template.default ?? '';
+      fieldValue.value =
+        template.default ?? FIELD_VALUE_FALLBACK_MAP['enum.string'];
     }
-  }
+  } else {
-
+    fieldValue.value =
-  if (template.type === 'Collection') {
+      template.default ?? FIELD_VALUE_FALLBACK_MAP[template.type];
-    fieldValue.value = template.default ?? 1;
-  }
-
-  if (template.type === 'ImageField') {
-    fieldValue.value = undefined;
-  }
-
-  if (template.type === 'ImageCollection') {
-    fieldValue.value = [];
-  }
-
-  if (template.type === 'DenoiseMaskField') {
-    fieldValue.value = undefined;
-  }
-
-  if (template.type === 'LatentsField') {
-    fieldValue.value = undefined;
-  }
-
-  if (template.type === 'ConditioningField') {
-    fieldValue.value = undefined;
-  }
-
-  if (template.type === 'UNetField') {
-    fieldValue.value = undefined;
-  }
-
-  if (template.type === 'ClipField') {
-    fieldValue.value = undefined;
-  }
-
-  if (template.type === 'VaeField') {
-    fieldValue.value = undefined;
-  }
-
-  if (template.type === 'ControlField') {
-    fieldValue.value = undefined;
-  }
-
-  if (template.type === 'MainModelField') {
-    fieldValue.value = undefined;
-  }
-
-  if (template.type === 'SDXLRefinerModelField') {
-    fieldValue.value = undefined;
-  }
-
-  if (template.type === 'VaeModelField') {
-    fieldValue.value = undefined;
-  }
-
-  if (template.type === 'LoRAModelField') {
-    fieldValue.value = undefined;
-  }
-
-  if (template.type === 'ControlNetModelField') {
-    fieldValue.value = undefined;
-  }
-
-  if (template.type === 'Scheduler') {
-    fieldValue.value = 'euler';
   }
 
   return fieldValue;

invokeai/frontend/web/src/services/api/schema.d.ts

@@ -1397,9 +1397,8 @@ export type components = {
       /**
        * Control Model
        * @description ControlNet model to load
-       * @default lllyasviel/sd-controlnet-canny
        */
-      control_model?: components["schemas"]["ControlNetModelField"];
+      control_model: components["schemas"]["ControlNetModelField"];
       /**
        * Control Weight
        * @description The weight given to the ControlNet
@@ -5806,12 +5805,12 @@ export type components = {
        */
       target_height?: number;
       /**
-       * Clip
+       * CLIP 1
        * @description CLIP (tokenizer, text encoder, LoRAs) and skipped layer count
        */
       clip?: components["schemas"]["ClipField"];
       /**
-       * Clip2
+       * CLIP 2
        * @description CLIP (tokenizer, text encoder, LoRAs) and skipped layer count
        */
       clip2?: components["schemas"]["ClipField"];
@@ -5855,7 +5854,7 @@ export type components = {
        */
       weight?: number;
       /**
-       * UNET
+       * UNet
        * @description UNet (scheduler, LoRAs)
        */
       unet?: components["schemas"]["UNetField"];
@@ -6998,7 +6997,7 @@ export type components = {
      * If a field should be provided a data type that does not exactly match the python type of the field,     use this to provide the type that should be used instead. See the node development docs for detail     on adding a new field type, which involves client-side changes.
      * @enum {string}
      */
-    UIType: "integer" | "float" | "boolean" | "string" | "array" | "ImageField" | "LatentsField" | "ConditioningField" | "ControlField" | "ColorField" | "ImageCollection" | "ConditioningCollection" | "ColorCollection" | "LatentsCollection" | "IntegerCollection" | "FloatCollection" | "StringCollection" | "BooleanCollection" | "MainModelField" | "SDXLMainModelField" | "SDXLRefinerModelField" | "ONNXModelField" | "VaeModelField" | "LoRAModelField" | "ControlNetModelField" | "UNetField" | "VaeField" | "ClipField" | "Collection" | "CollectionItem" | "enum" | "Scheduler" | "WorkflowField" | "IsIntermediate" | "MetadataField";
+    UIType: "boolean" | "ColorField" | "ConditioningField" | "ControlField" | "float" | "ImageField" | "integer" | "LatentsField" | "string" | "BooleanCollection" | "ColorCollection" | "ConditioningCollection" | "ControlCollection" | "FloatCollection" | "ImageCollection" | "IntegerCollection" | "LatentsCollection" | "StringCollection" | "BooleanPolymorphic" | "ColorPolymorphic" | "ConditioningPolymorphic" | "ControlPolymorphic" | "FloatPolymorphic" | "ImagePolymorphic" | "IntegerPolymorphic" | "LatentsPolymorphic" | "StringPolymorphic" | "MainModelField" | "SDXLMainModelField" | "SDXLRefinerModelField" | "ONNXModelField" | "VaeModelField" | "LoRAModelField" | "ControlNetModelField" | "UNetField" | "VaeField" | "ClipField" | "Collection" | "CollectionItem" | "enum" | "Scheduler" | "WorkflowField" | "IsIntermediate" | "MetadataField";
     /**
      * UIComponent
      * @description The type of UI component to use for a field, used to override the default components, which are     inferred from the field type.
@@ -7020,6 +7019,8 @@ export type components = {
       ui_component?: components["schemas"]["UIComponent"];
       /** Ui Order */
       ui_order?: number;
+      /** Item Default */
+      item_default?: unknown;
     };
     /**
      * _OutputField
@@ -7041,6 +7042,12 @@ export type components = {
      * @enum {string}
      */
     StableDiffusion1ModelFormat: "checkpoint" | "diffusers";
+    /**
+     * StableDiffusionOnnxModelFormat
+     * @description An enumeration.
+     * @enum {string}
+     */
+    StableDiffusionOnnxModelFormat: "olive" | "onnx";
     /**
      * ControlNetModelFormat
      * @description An enumeration.
@@ -7059,12 +7066,6 @@ export type components = {
      * @enum {string}
      */
     StableDiffusion2ModelFormat: "checkpoint" | "diffusers";
-    /**
-     * StableDiffusionOnnxModelFormat
-     * @description An enumeration.
-     * @enum {string}
-     */
-    StableDiffusionOnnxModelFormat: "olive" | "onnx";
   };
   responses: never;
   parameters: never;