fix many serializer behaviour

src/backend/InvenTree/InvenTree/mixins.py

@@ -14,7 +14,6 @@ from InvenTree.helpers import (
     strip_html_tags,
 )
 from InvenTree.schema import schema_for_view_output_options
-from InvenTree.serializers import OptionalFilterabelSerializer
 
 
 class CleanMixin:
@@ -204,7 +203,6 @@ class UpdateAPI(CleanMixin, generics.UpdateAPIView):
 
 
 class DataImportExportSerializerMixin(
-    OptionalFilterabelSerializer,
     data_exporter.mixins.DataExportSerializerMixin,
     importer.mixins.DataImportSerializerMixin,
 ):

src/backend/InvenTree/InvenTree/serializers.py

@@ -93,12 +93,9 @@ def can_filter(func, default=False):
     """Decorator for marking serializer fields as filterable."""
     # Check if function is holding OptionalFilterabelSerializer somehow
     if not issubclass(func.__class__, OptionalFilterabelSerializer):
-        return
+        raise TypeError(
-    if not isinstance(func, OptionalFilterabelSerializer):
+            'can_filter can only be applied to OptionalFilterabelSerializer Serializers!'
-        return
+        )
-        # raise TypeError('can_filter can only be applied to OptionalFilterabelSerializer Serializers!')
-    if isinstance(func, serializers.ListSerializer):
-        return func
     func._kwargs['is_filterable'] = True
     func._kwargs['is_filterable_default'] = default
     return func
@@ -302,8 +299,8 @@ class DependentField(serializers.Field):
 
 
 class InvenTreeModelSerializer(
-    FractionalFilterabelSerializer,
     OptionalFilterabelSerializer,
+    FractionalFilterabelSerializer,
     serializers.ModelSerializer,
 ):
     """Inherits the standard Django ModelSerializer class, but also ensures that the underlying model class data are checked on validation."""
@@ -611,3 +608,9 @@ class RemoteImageMixin(metaclass=serializers.SerializerMetaclass):
             raise ValidationError(_('Failed to download image from remote URL'))
 
         return url
+
+
+class FilterableListSerializer(
+    OptionalFilterabelSerializer, serializers.ListSerializer
+):
+    """Custom ListSerializer which allows filtering of fields."""

src/backend/InvenTree/build/serializers.py

@@ -35,6 +35,7 @@ from generic.states.fields import InvenTreeCustomStatusSerializerMixin
 from InvenTree.mixins import DataImportExportSerializerMixin
 from InvenTree.ready import isGeneratingSchema
 from InvenTree.serializers import (
+    FilterableListSerializer,
     InvenTreeDecimalField,
     InvenTreeModelSerializer,
     NotesFieldMixin,
@@ -1189,6 +1190,7 @@ class BuildItemSerializer(DataImportExportSerializerMixin, InvenTreeModelSeriali
             'bom_part_id',
             'bom_part_name',
         ]
+        list_serializer_class = FilterableListSerializer
 
     def __init__(self, *args, **kwargs):
         """Determine which extra details fields should be included."""

src/backend/InvenTree/part/serializers.py

@@ -34,7 +34,7 @@ import users.models
 from importer.registry import register_importer
 from InvenTree.mixins import DataImportExportSerializerMixin
 from InvenTree.ready import isGeneratingSchema
-from InvenTree.serializers import can_filter
+from InvenTree.serializers import FilterableListSerializer, can_filter
 from users.serializers import UserSerializer
 
 from .models import (
@@ -414,8 +414,8 @@ class PartParameterSerializer(
             'updated_by',
             'updated_by_detail',
         ]
-
         read_only_fields = ['updated', 'updated_by']
+        list_serializer_class = FilterableListSerializer
 
     def save(self):
         """Save the PartParameter instance."""