Label printing bug fixes (#7329)

* Hide printing actions button for top level stock location

* Fix typo

* Add another check for null

* Remove debug statement

* Prevent display of multiple form-error notifications

* Fix pickling for print offloading

* Reset selected plugin

* Exclude the entire 'context' object when pickling a printing job

docs/docs/report/context_variables.md

@@ -16,7 +16,6 @@ In addition to the model-specific context variables, the following global contex
 | base_url | The base URL for the InvenTree instance |
 | date | Current date, represented as a Python datetime.date object |
 | datetime | Current datetime, represented as a Python datetime object |
-| request | The Django request object associated with the printing process |
 | template | The report template instance which is being rendered against |
 | template_description | Description of the report template |
 | template_name | Name of the report template |

src/backend/InvenTree/plugin/base/label/mixins.py

@@ -147,6 +147,9 @@ class LabelPrintingMixin:
 
         N = len(items)
 
+        if N <= 0:
+            raise ValidationError(_('No items provided to print'))
+
         # Generate a label output for each provided item
         for item in items:
             context = label.get_context(item, request)
@@ -177,9 +180,13 @@ class LabelPrintingMixin:
                 self.print_label(**print_args)
             else:
                 # Offload the print task to the background worker
-                # Exclude the 'pdf_file' object - cannot be pickled
 
-                kwargs.pop('pdf_file', None)
+                # Exclude the 'pdf_file' object - cannot be pickled
+                print_args.pop('pdf_file', None)
+
+                # Exclude the 'context' object - cannot be pickled
+                print_args.pop('context', None)
+
                 offload_task(plugin_label.print_label, self.plugin_slug(), **print_args)
 
             # Update the progress of the print job

src/backend/InvenTree/report/models.py

@@ -246,7 +246,6 @@ class ReportTemplateBase(MetadataMixin, InvenTree.models.InvenTreeModel):
             'base_url': get_base_url(request=request),
             'date': InvenTree.helpers.current_date(),
             'datetime': InvenTree.helpers.current_time(),
-            'request': request,
             'template': self,
             'template_description': self.description,
             'template_name': self.name,

src/backend/InvenTree/stock/models.py

@@ -2158,7 +2158,7 @@ class StockItem(
 
     def testResultList(self, **kwargs):
         """Return a list of test-result objects for this StockItem."""
-        return self.testResultMap(**kwargs).values()
+        return list(self.testResultMap(**kwargs).values())
 
     def requiredTestStatus(self):
         """Return the status of the tests required for this StockItem.

src/frontend/src/components/buttons/PrintingActions.tsx

@@ -15,11 +15,13 @@ import { ActionDropdown } from '../items/ActionDropdown';
 
 export function PrintingActions({
   items,
+  hidden,
   enableLabels,
   enableReports,
   modelType
 }: {
   items: number[];
+  hidden?: boolean;
   enableLabels?: boolean;
   enableReports?: boolean;
   modelType?: ModelType;
@@ -79,8 +81,6 @@ export function PrintingActions({
         mixin: 'labels'
       },
       onValueChange: (value: string, record?: any) => {
-        console.log('onValueChange:', value, record);
-
         if (record?.key && record?.key != pluginKey) {
           setPluginKey(record.key);
         }
@@ -100,6 +100,7 @@ export function PrintingActions({
     },
     successMessage: t`Label printing completed successfully`,
     onFormSuccess: (response: any) => {
+      setPluginKey('');
       if (!response.complete) {
         // TODO: Periodically check for completion (requires server-side changes)
         notifications.show({
@@ -164,28 +165,30 @@ export function PrintingActions({
   }
 
   return (
-    <>
-      {reportModal.modal}
-      {labelModal.modal}
-      <ActionDropdown
-        tooltip={t`Printing Actions`}
-        icon={<IconPrinter />}
-        disabled={!enabled}
-        actions={[
-          {
-            name: t`Print Labels`,
-            icon: <IconTags />,
-            onClick: () => labelModal.open(),
-            hidden: !enableLabels
-          },
-          {
-            name: t`Print Reports`,
-            icon: <IconReport />,
-            onClick: () => reportModal.open(),
-            hidden: !enableReports
-          }
-        ]}
-      />
-    </>
+    !hidden && (
+      <>
+        {reportModal.modal}
+        {labelModal.modal}
+        <ActionDropdown
+          tooltip={t`Printing Actions`}
+          icon={<IconPrinter />}
+          disabled={!enabled}
+          actions={[
+            {
+              name: t`Print Labels`,
+              icon: <IconTags />,
+              onClick: () => labelModal.open(),
+              hidden: !enableLabels
+            },
+            {
+              name: t`Print Reports`,
+              icon: <IconReport />,
+              onClick: () => reportModal.open(),
+              hidden: !enableReports
+            }
+          ]}
+        />
+      </>
+    )
   );
 }

src/frontend/src/components/forms/ApiForm.tsx

@@ -144,10 +144,12 @@ export function OptionsApiForm({
       if (error.response) {
         invalidResponse(error.response.status);
       } else {
+        notifications.hide('form-error');
         notifications.show({
           title: t`Form Error`,
           message: error.message,
-          color: 'red'
+          color: 'red',
+          id: 'form-error'
         });
       }
       return false;

src/frontend/src/pages/stock/LocationDetail.tsx

@@ -294,6 +294,7 @@ export default function Stock() {
       <PrintingActions
         modelType={ModelType.stocklocation}
         items={[location.pk ?? 0]}
+        hidden={!location?.pk}
         enableLabels
         enableReports
       />,