filters for product and product varient

backend/product/admin.py

@@ -192,6 +192,7 @@ class ProductVariantInLine(StackedInline):
             kwargs['widget'] = UnfoldAdminColorInputWidget()
         return super().formfield_for_dbfield(db_field, request, **kwargs)
 
+from unfold.contrib.filters.admin import RelatedDropdownFilter
 @admin.register(ProductVariant)
 class ProductVariantAdmin(ModelAdmin, ImportExportModelAdmin):
     import_form_class = ImportForm
@@ -199,9 +200,10 @@ class ProductVariantAdmin(ModelAdmin, ImportExportModelAdmin):
     autocomplete_fields = ['product_attributes', 'images', 'in_pack_items', 'details']
     warn_unsaved_form = True
     readonly_fields = ['price', 'created_at']
+    list_filter = [('product__category', RelatedDropdownFilter), ('product__category__parent', RelatedDropdownFilter), ('product', RelatedDropdownFilter)]
+    list_filter_submit = True
     list_display = ('product', 'created_at')
     # inlines = [DetailModelInLine]
-from unfold.contrib.filters.admin import RelatedDropdownFilter
 @admin.register(ProductModel)
 class ProductModelAdmin(ModelAdmin, ImportExportModelAdmin):
     import_form_class = ImportForm
@@ -210,6 +212,7 @@ class ProductModelAdmin(ModelAdmin, ImportExportModelAdmin):
     readonly_fields = ('slug', 'created_at')
     search_fields = ['name', 'description', ]
     list_filter = ['show', ('category', RelatedDropdownFilter), 'show_in_bot', ('category__parent', RelatedDropdownFilter)]
+    list_filter_submit = True
     autocomplete_fields = ['related_products', 'shop']
     # compressed_fields = True
     warn_unsaved_form = True