序列化HiddenField

有时候序列化的时候,有些字段不需要前端传给我,从后台就可以直接拿到,
比如user,直接就可以通过request.user获取,那么序列化的时候,我们可以通过重写save方法等其他方法,但是现在可以有一个更好的选择HiddenField

#源码
class CurrentUserDefault(object):
    def set_context(self, serializer_field):
        self.user = serializer_field.context['request'].user

    def __call__(self):
        return self.user

    def __repr__(self):
        return unicode_to_repr('%s()' % self.__class__.__name__)

添加user代码序列化中
class PyUserProfileUpdateSeriazerFE(serializers.ModelSerializer):
    follow_project = serializers.ListField(allow_empty=True)

    user = serializers.HiddenField(default=serializers.CurrentUserDefault())

    class Meta:
        model = UserProfile
        fields = ('user', 'city', 'follow_project')

当然你也可以重写

class CurrentStatus(object):
    def set_context(self, serializer_field):
        user_info = serializer_field.context['request'].user
        if user_info.shop.shop_type == 'SHOP_TYPE_COMCIRCLE':
            self.status = 1
        else:
            self.status = 2

    def __call__(self):
        return self.status

    def __repr__(self):
        return unicode_to_repr('%s()' % self.__class__.__name__)