[UI] Tree select in form fields (#12217)

* Add TreeField component

* Add chevrons in dropdown menu

* Custom node rendering

* Add childIdentifier

* Ensure full value gets displayed

* Fix for search results

* Refactor old renderers

* Override field types

* use definition filters

* Better location validation messages

* Tweaks

* Fix unit test

* Include icon

* Fix playwright test

* Fix call to onValueChange

* Updated playwright tests

* Use pathstring in selectedLabel (if available)

* Mark structural nodes

* Retain selected value when dropdown open

* Add better placeholder values

* Simplify field selection

src/backend/InvenTree/stock/serializers.py

@@ -1770,7 +1770,7 @@ class StockCountSerializer(StockAdjustmentSerializer):
         fields = ['items', 'notes', 'location']
 
     location = serializers.PrimaryKeyRelatedField(
-        queryset=StockLocation.objects.filter(structural=False),
+        queryset=StockLocation.objects.filter(),
         many=False,
         required=False,
         allow_null=True,
@@ -1778,6 +1778,15 @@ class StockCountSerializer(StockAdjustmentSerializer):
         help_text=_('Set stock location for counted items (optional)'),
     )
 
+    def validate_location(self, location):
+        """Validate the provided location."""
+        if location and location.structural:
+            raise ValidationError(
+                _('Structural locations cannot be assigned stock items')
+            )
+
+        return location
+
     def save(self):
         """Count stock."""
         request = self.context['request']
@@ -1874,7 +1883,7 @@ class StockTransferSerializer(StockAdjustmentSerializer):
     items = StockAdjustmentItemSerializer(many=True, require_non_zero=True)
 
     location = serializers.PrimaryKeyRelatedField(
-        queryset=StockLocation.objects.filter(structural=False),
+        queryset=StockLocation.objects.filter(),
         many=False,
         required=True,
         allow_null=False,
@@ -1882,6 +1891,15 @@ class StockTransferSerializer(StockAdjustmentSerializer):
         help_text=_('Destination stock location'),
     )
 
+    def validate_location(self, location):
+        """Validate the provided location."""
+        if location and location.structural:
+            raise ValidationError(
+                _('Structural locations cannot be assigned stock items')
+            )
+
+        return location
+
     def save(self):
         """Transfer stock."""
         request = self.context['request']
@@ -1965,7 +1983,7 @@ class StockReturnSerializer(StockAdjustmentSerializer):
     )
 
     location = serializers.PrimaryKeyRelatedField(
-        queryset=StockLocation.objects.filter(structural=False),
+        queryset=StockLocation.objects.filter(),
         many=False,
         required=True,
         allow_null=False,
@@ -1973,6 +1991,15 @@ class StockReturnSerializer(StockAdjustmentSerializer):
         help_text=_('Destination stock location'),
     )
 
+    def validate_location(self, location):
+        """Validate the provided location."""
+        if location and location.structural:
+            raise ValidationError(
+                _('Structural locations cannot be assigned stock items')
+            )
+
+        return location
+
     merge = serializers.BooleanField(
         default=False,
         required=False,

src/backend/InvenTree/stock/test_api.py

@@ -2435,7 +2435,10 @@ class StocktakeTest(StockAPITestCase):
             {'items': [{'pk': item_a.pk, 'quantity': 1}], 'location': structural.pk},
             expected_code=400,
         )
-        self.assertIn('does not exist', str(response.data['location']))
+        self.assertIn(
+            'Structural locations cannot be assigned stock items',
+            str(response.data['location']),
+        )
 
 
 class StockTransferMergeTest(StockAPITestCase):