finish

backend/community/serializers.py

@@ -3,6 +3,8 @@ from .models import Activity, ActivitySignup, Topic, Reply, TopicMedia
 from shop.serializers import WeChatUserSerializer, ESP32ConfigSerializer, ServiceSerializer, VCCourseSerializer
 
 class ActivitySerializer(serializers.ModelSerializer):
+    display_banner_url = serializers.ReadOnlyField()
+    
     class Meta:
         model = Activity
         fields = '__all__'