feat(models): update model manager service & route to return list of models

invokeai/app/api/routers/models.py

@@ -62,8 +62,7 @@ class ConvertedModelResponse(BaseModel):
     info: DiffusersModelInfo = Field(description="The converted model info")
 
 class ModelsList(BaseModel):
-    models: Dict[BaseModelType, Dict[ModelType, Dict[str, MODEL_CONFIGS]]] # TODO: debug/discuss with frontend
-    #models: dict[SDModelType, dict[str, Annotated[Union[(DiffusersModelInfo,CkptModelInfo,SafetensorsModelInfo)], Field(discriminator="format")]]]
+    models: list[MODEL_CONFIGS]
 
 
 @models_router.get(
@@ -72,10 +71,10 @@ class ModelsList(BaseModel):
     responses={200: {"model": ModelsList }},
 )
 async def list_models(
-    base_model: BaseModelType = Query(
+    base_model: Optional[BaseModelType] = Query(
         default=None, description="Base model"
     ),
-    model_type: ModelType = Query(
+    model_type: Optional[ModelType] = Query(
         default=None, description="The type of model to get"
     ),
 ) -> ModelsList:

invokeai/app/services/model_manager_service.py

@@ -5,7 +5,7 @@ from __future__ import annotations
 import torch
 from abc import ABC, abstractmethod
 from pathlib import Path
-from typing import Union, Callable, List, Tuple, types, TYPE_CHECKING
+from typing import Optional, Union, Callable, List, Tuple, types, TYPE_CHECKING
 from dataclasses import dataclass
 
 from invokeai.backend.model_management.model_manager import (
@@ -273,21 +273,10 @@ class ModelManagerService(ModelManagerServiceBase):
         self,
         base_model: Optional[BaseModelType] = None,
         model_type: Optional[ModelType] = None
-    ) -> dict:
+    ) -> list[dict]:
+    # ) -> dict:
         """
-        Return a dict of models in the format:
-        { model_type1:
-          { model_name1: {'status': 'active'|'cached'|'not loaded',
-                         'model_name' : name,
-                         'model_type' : SDModelType,
-                         'description': description,
-                         'format': 'folder'|'safetensors'|'ckpt'
-                         },
-            model_name2: { etc }
-          },
-          model_type2:
-            { model_name_n: etc
-        }
+        Return a list of models.
         """
         return self.mgr.list_models(base_model, model_type)
 

invokeai/backend/model_management/model_manager.py

@@ -473,9 +473,9 @@ class ModelManager(object):
         self,
         base_model: Optional[BaseModelType] = None,
         model_type: Optional[ModelType] = None,
-    ) -> Dict[str, Dict[str, str]]:
+    ) -> list[dict]:
         """
-        Return a dict of models, in format [base_model][model_type][model_name]
+        Return a list of models.
 
         Please use model_manager.models() to get all the model names,
         model_manager.model_info('model-name') to get the stanza for the model
@@ -483,7 +483,7 @@ class ModelManager(object):
         object derived from models.yaml
         """
 
-        models = dict()
+        models = []
         for model_key in sorted(self.models, key=str.casefold):
             model_config = self.models[model_key]
 
@@ -493,20 +493,16 @@ class ModelManager(object):
             if model_type is not None and cur_model_type != model_type:
                 continue
 
-            if cur_base_model not in models:
-                models[cur_base_model] = dict()
-            if cur_model_type not in models[cur_base_model]:
-                models[cur_base_model][cur_model_type] = dict()
-
-            models[cur_base_model][cur_model_type][cur_model_name] = dict(
+            model_dict = dict(
                 **model_config.dict(exclude_defaults=True),
-
                 # OpenAPIModelInfoBase
                 name=cur_model_name,
                 base_model=cur_base_model,
                 type=cur_model_type,
             )
 
+            models.append(model_dict)
+
         return models
 
     def print_models(self) -> None: