django rest framework:从序列化器validate()方法设置字段级错误

Question

我有一个序列化程序,根据其他字段的值验证字段,在错误响应中,我想将每个字段错误显示为字段错误,而不是显示"non_field_errors"下的所有内容,如果我要提高的话会发生什么对象级验证方法中的ValidationError.下面是我想要实现的目标的说明:

MySerializer(ModelSerializer):
    ...
    def validate(self, data):
        field_val1 = data['field_val1']
        field_val2 = data['field_val2']
        if not self._is_field_valid(field_val1, field_val2):
            # The below line is how I would do what I want with Django
            # Forms, however, it's not valid in DRF
            self._errors['field_val1'] = 'this field is not valid'

所需的错误响应是:

{'field_val1': ['this field is not valid']}

Answer 1

我想通了,在"BaseSerializer"部分的文档的这一页上,有一个示例显示ValidationError可以在初始化时获取字典参数.

如果我raise ValidationError({'field_val1': ['this field is not valid']})得到了我想要的JSON响应.