perf: 修改 labels 和 role 搜索

apps/labels/const.py

@@ -0,0 +1,24 @@
+from django.contrib.contenttypes.models import ContentType
+from django.utils.functional import LazyObject
+
+
+class LabeledResourceType(LazyObject):
+    @staticmethod
+    def get_res_types():
+        content_types = ContentType.objects.all()
+        ids = []
+        for ct in content_types:
+            model_cls = ct.model_class()
+            if not model_cls:
+                continue
+            if model_cls._meta.parents:
+                continue
+            if 'labels' in model_cls._meta._forward_fields_map.keys():
+                ids.append(ct.id)
+        return ContentType.objects.filter(id__in=ids)
+
+    def _setup(self):
+        self._wrapped = self.get_res_types()
+
+
+label_resource_types = LabeledResourceType()