fix: improve model editing logic and handle missing workspace_id gracefully

Author: wxg0103

apps/models_provider/serializers/model_serializer.py

@@ -7,14 +7,11 @@
 
 import uuid_utils.compat as uuid
 from common.config.embedding_config import ModelManage
-from common.constants.cache_version import Cache_Version
-from common.constants.resource_permission_constants import ResourceAuthType
 from common.database_model_manage.database_model_manage import DatabaseModelManage
 from common.db.search import native_search
 from common.exception.app_exception import AppApiException
 from common.utils.common import get_file_content
 from common.utils.rsa_util import rsa_long_decrypt, rsa_long_encrypt
-from django.core.cache import cache
 from django.db import transaction
 from django.db.models import QuerySet
 from django.utils.translation import gettext_lazy as _
@@ -207,9 +204,12 @@ def delete(self, with_valid=True):
 
         def edit(self, instance: Dict, user_id: str, with_valid=True):
             if with_valid:
-                self.is_valid(raise_exception=True)
-            model = QuerySet(Model).filter(id=self.data.get("id"), workspace_id=self.data.get("workspace_id")).first()
-
+                super().is_valid(raise_exception=True)
+            model = (
+                QuerySet(Model)
+                .filter(id=self.data.get("id"), workspace_id=self.data.get("workspace_id", "None"))
+                .first()
+            )
             credential, model_credential, provider_handler = ModelSerializer.Edit(data={**instance}).is_valid(
                 model=model
             )