Question

我按Django Rest Framework "A valid integer is required."?设置SpiderSerializer，但似乎无法正常工作，仍然获得{"min_word_count":["A valid integer is required."]}

请求有效负载{..., min_word_count:""}

class Spider(models.Model):
    ...
    min_word_count = models.PositiveIntegerField(
        default=100,
        null=True,
        blank=True,
    )


class SpiderSerializer(serializers.ModelSerializer):
    min_word_count = serializers.IntegerField(default='', required=False)

    class Meta:
        model = Spider
        exclude = ('category',)


    def validate_min_word_count(self, value):
        print('value1111111111111')
        print(value)
        if not value:
            return 0
        try:
            value = int(value)
        except ValueError:
            raise serializers.ValidationError('You must supply an integer')
        return value

Answer 1

min_word_count:""是一个空字符串，因此不是有效数字。您可以min_word_count: None并将allow_null=True添加到字段声明中。

In [7]: class SpiderSerializer(serializers.Serializer):
   ...:     min_word_count = serializers.IntegerField(default='', required=False)
   ...:     

In [8]: s = SpiderSerializer(data={})

In [9]: s.is_valid()
Out[9]: True

In [10]: s = SpiderSerializer(data={'min_word_count': None})

In [11]: s.is_valid()
Out[11]: False

In [12]: s.errors
Out[12]: 
ReturnDict([('min_word_count',
             [ErrorDetail(string='This field may not be null.', code='null')])])

In [13]: s = SpiderSerializer(data={'min_word_count': ""})

In [14]: s.is_valid()
Out[14]: False

In [15]: s.errors
Out[15]: 
ReturnDict([('min_word_count',
             [ErrorDetail(string='A valid integer is required.', code='invalid')])])

更新null = True IntegerField时，Django REST“需要一个有效的整数”

1 个答案: