Merge remote changes and update date_range format

apps/expertproducts/views.py

@@ -48,11 +48,26 @@ class ContentAnalysisAPI(APIView):
         ]
 
         for field in required_fields:
-            if field not in data:
+            value = data.get(field)
+            if value is None or (isinstance(value, str) and value.strip() == ""):
                 return Response(
-                    {"error": f"Field '{field}' is required."},
+                    {"error": f"字段 '{field}' 不能为空"},
                     status=status.HTTP_400_BAD_REQUEST
                 )
+            # 新增校验：price和stock必须为数字且>=0
+            if field in ["product_info.price", "product_info.stock"]:
+                try:
+                    num_value = float(value)
+                    if num_value < 0:
+                        return Response(
+                            {"error": f"'{field}' 不合法"},
+                            status=status.HTTP_400_BAD_REQUEST
+                        )
+                except (ValueError, TypeError):
+                    return Response(
+                        {"error": f"'{field}' 不合法"},
+                        status=status.HTTP_400_BAD_REQUEST
+                    )
 
         # 3. 解析 JSON 字段
         try: