fix: use repo.get(template_id, user_id) instead of repo.get_by_id

apps/api/app/api/routes/generation_preview.py

@@ -67,7 +67,9 @@ def _calc_preview_resolution(video_ratio: str = "") -> str:
     return ratio_map.get(video_ratio.strip(), PREVIEW_RESOLUTION)
 
 
-def _infer_video_ratio_from_template(template_id: str, db: Session) -> str:
+def _infer_video_ratio_from_template(
+    template_id: str, db: Session, user_id: str = ""
+) -> str:
     """从模板 mode 推断视频比例，前端未传 video_ratio 时使用。
 
     Returns:
@@ -77,7 +79,7 @@ def _infer_video_ratio_from_template(template_id: str, db: Session) -> str:
         return ""
     try:
         repo = SQLAlchemyTemplateRepository(db)
-        template = repo.get_by_id(template_id)
+        template = repo.get(template_id, user_id)
         if template:
             mode = getattr(template, "mode", "") or ""
             ratio = _TEMPLATE_MODE_TO_RATIO.get(mode.strip(), "")
@@ -230,7 +232,7 @@ def create_preview_generation_task(
     # 确定视频比例：优先前端传入，否则从模板 mode 推断
     video_ratio = request.video_ratio or ""
     if not video_ratio and request.template_id:
-        video_ratio = _infer_video_ratio_from_template(request.template_id, db)
+        video_ratio = _infer_video_ratio_from_template(request.template_id, db, user_id)
 
     use_case = CreateGenerationTaskUseCase(generation_task_repository)