fix: refactor conversation pagination to use SQLAlchemy session manag… (#11956)

Signed-off-by: -LAN- <laipz8200@outlook.com>

api/services/web_conversation_service.py

@@ -1,5 +1,8 @@
 from typing import Optional, Union
 
+from sqlalchemy import select
+from sqlalchemy.orm import Session
+
 from core.app.entities.app_invoke_entities import InvokeFrom
 from extensions.ext_database import db
 from libs.infinite_scroll_pagination import InfiniteScrollPagination
@@ -13,6 +16,8 @@ class WebConversationService:
     @classmethod
     def pagination_by_last_id(
         cls,
+        *,
+        session: Session,
         app_model: App,
         user: Optional[Union[Account, EndUser]],
         last_id: Optional[str],
@@ -23,24 +28,25 @@ class WebConversationService:
     ) -> InfiniteScrollPagination:
         include_ids = None
         exclude_ids = None
-        if pinned is not None:
-            pinned_conversations = (
-                db.session.query(PinnedConversation)
-                .filter(
+        if pinned is not None and user:
+            stmt = (
+                select(PinnedConversation.conversation_id)
+                .where(
                     PinnedConversation.app_id == app_model.id,
                     PinnedConversation.created_by_role == ("account" if isinstance(user, Account) else "end_user"),
                     PinnedConversation.created_by == user.id,
                 )
                 .order_by(PinnedConversation.created_at.desc())
-                .all()
             )
-            pinned_conversation_ids = [pc.conversation_id for pc in pinned_conversations]
+            pinned_conversation_ids = session.scalars(stmt).all()
+
             if pinned:
                 include_ids = pinned_conversation_ids
             else:
                 exclude_ids = pinned_conversation_ids
 
         return ConversationService.pagination_by_last_id(
+            session=session,
             app_model=app_model,
             user=user,
             last_id=last_id,