new

backend/community/serializers.py

@@ -4,11 +4,30 @@ from shop.serializers import WeChatUserSerializer, ESP32ConfigSerializer, Servic
 
 class ActivitySerializer(serializers.ModelSerializer):
     display_banner_url = serializers.ReadOnlyField()
+    signup_form_config = serializers.SerializerMethodField()
     
     class Meta:
         model = Activity
         fields = '__all__'
 
+    def get_signup_form_config(self, obj):
+        # 1. 优先使用 JSON 配置
+        if obj.signup_form_config:
+            return obj.signup_form_config
+        
+        # 2. 否则根据开关生成默认配置
+        config = []
+        if obj.ask_name:
+            config.append({"name": "name", "label": "姓名", "type": "text", "required": True})
+        if obj.ask_phone:
+            config.append({"name": "phone", "label": "手机号", "type": "number", "required": True})
+        if obj.ask_wechat:
+            config.append({"name": "wechat", "label": "微信号", "type": "text", "required": True})
+        if obj.ask_company:
+            config.append({"name": "company", "label": "公司/机构", "type": "text", "required": False})
+            
+        return config
+
 class ActivitySignupSerializer(serializers.ModelSerializer):
     activity_info = ActivitySerializer(source='activity', read_only=True)