fix: autocomplete filter query (#1101)

Author: lukasvinclav

src/unfold/contrib/filters/admin/mixins.py

@@ -4,10 +4,12 @@
 from django.contrib.admin.views.main import ChangeList
 from django.core.validators import EMPTY_VALUES
 from django.db.models import QuerySet
+from django.db.models.fields import BLANK_CHOICE_DASH, Field
 from django.forms import ValidationError
 from django.http import HttpRequest
 from django.utils.translation import gettext_lazy as _
 
+from unfold.admin import ModelAdmin
 from unfold.contrib.filters.forms import (
     AutocompleteDropdownForm,
     DropdownForm,
@@ -123,6 +125,16 @@ def choices(self, changelist: ChangeList) -> tuple[dict[str, Any], ...]:
 
 
 class AutocompleteMixin:
+    def has_output(self) -> bool:
+        return True
+
+    def field_choices(
+        self, field: Field, request: HttpRequest, model_admin: ModelAdmin
+    ) -> list[tuple[str, str]]:
+        return [
+            ("", BLANK_CHOICE_DASH),
+        ]
+
     def choices(
         self, changelist: ChangeList
     ) -> Generator[dict[str, AutocompleteDropdownForm], None, None]:

src/unfold/contrib/filters/forms.py

@@ -52,7 +52,7 @@ def __init__(
         self.fields[name] = self.field(
             label=label,
             required=False,
-            queryset=field.remote_field.model.objects.all(),
+            queryset=field.remote_field.model.objects,
             widget=self.widget(field, model_admin.admin_site),
         )
 
@@ -61,7 +61,7 @@ class Media:
             "admin/js/vendor/jquery/jquery.js",
             "admin/js/vendor/select2/select2.full.js",
             "admin/js/jquery.init.js",
-            "admin/js/select2.init.js",
+            "unfold/js/select2.init.js",
         )
         css = {
             "screen": (