Question

我开始在我的应用程序中使用django-rest-framework，我对序列化程序验证有疑问。在文档中，我发现了这个用于对象验证的例子：

from rest_framework import serializers

class EventSerializer(serializers.Serializer):
    description = serializers.CharField(max_length=100)
    start = serializers.DateTimeField()
    finish = serializers.DateTimeField()

    def validate(self, attrs):
        """
        Check that the start is before the stop.
        """
        if attrs['start'] > attrs['finish']:
            raise serializers.ValidationError("finish must occur after start")
        return attrs

返回以下内容：

{"non_field_errors": ["finish must occur after start"]}

我的问题是，如何找出哪些字段导致验证失败？在这种情况下，attrs [＆＃39; start＆＃39;]和attrs [＆＃39; finish＆＃39;]。最后我想要这样的事情：

{"non_field_errors": ["finish must occur after start"], 
 "start": ["finish must occur after start"], 
 "finish": ["finish must occur after start"]}

这样我就可以标记负责的表单字段。我希望这个问题很清楚。谢谢！

Answer 1

创建ValidationError时，可以传入字典而不是字符串。字典期望key是字段名称，value是错误字符串。

def validate(self, attrs):
    """
    Check that the start is before the stop.
    """
    if attrs['start'] > attrs['finish']:
        raise serializers.ValidationError({"finish": "finish must occur after start"})
    return attrs

这应该产生以下行的输出：

{"start": ["finish must occur after start"], 
 "finish": ["finish must occur after start"]}

这听起来像你在寻找。

Django Rest框架验证：将字段标记为错误

1 个答案: