pdf upload

backend/competition/views.py

@@ -10,6 +10,7 @@ from .serializers import (
     ProjectSerializer, ProjectFileSerializer, 
     ScoreSerializer, CommentSerializer, ScoreDimensionSerializer
 )
+import uuid
 
 from rest_framework.pagination import PageNumberPagination
 
@@ -200,13 +201,26 @@ class ProjectFileViewSet(viewsets.ModelViewSet):
         return ProjectFile.objects.all()
         
     def perform_create(self, serializer):
-        # 简单权限控制：只有项目拥有者可以上传
         project = serializer.validated_data['project']
         user = get_current_wechat_user(self.request)
         
         if not user or project.contestant.user != user:
             raise serializers.ValidationError("无权上传文件")
-            
+        
+        file_obj = serializer.validated_data.get('file')
+        if file_obj:
+            try:
+                from ai_services.services import AliyunTingwuService
+                service = AliyunTingwuService()
+                if service.bucket:
+                    ext = file_obj.name.split('.')[-1] if '.' in file_obj.name else ''
+                    file_name = f"competitions/projects/{project.id}/{uuid.uuid4()}.{ext}"
+                    oss_url = service.upload_to_oss(file_obj, file_name, day=30)
+                    serializer.save(file_url=oss_url, file=None)
+                    return
+            except Exception as e:
+                print(f"OSS upload failed, using local storage: {e}")
+        
         serializer.save()