使用由DRF給出Django的REST框架

Question

默認驗證錯誤消息定製驗證錯誤消息是密鑰和消息的列表。將這種格式自定義爲文本格式的最佳方式是什麼？例如。

這是默認格式。

{ 
"message": { 
    "phone": [ 
     "customer with this phone already exists." 
    ], 
    "email": [ 
     "customer with this email already exists." 
    ], 
    "tenant_id": [ 
     "customer with this tenant id already exists." 
    ] 
}, 
"success": false, 
"error": 1 
} 

這是我想要的東西。

{ 
"message": "customer with this phone already exists, customer with this 
email already exists, customer with this tenant id already exists" 
"success": false, 
"error": 1 
} 

Answer 1

通常的做法是，您顯示個別字段的驗證消息，而不是提供單個常規消息。所以DRF的默認行爲就是遵循這個約定。

達到你想要什麼，你需要創建對象級驗證您的串行http://www.django-rest-framework.org/api-guide/serializers/#object-level-validation和預防領域的驗證默認行爲。

Answer 2

您可以覆蓋串行validate()方法，提高定製驗證，

def validate(self, data): 
    #validations here.. 
    response = { 
        "message": "customer with this phone already 
           exists, customer with this 
           email already exists, customer with 
           this tenant id already exists" 
        "success": false, 
        "error": 1 
       } 
    try: 
     Customer.objects.get(phone=data['phone'], email=data['email'], 
          tenant_id=data['tenant_id']) 
     raise serializers.ValidationError(response["message"]) 
     #or you could return a json response. 
     #return Response(response) 
    except: 
     return data