django rest框架更改主键以使用unqiue字段 [英] django rest framework change primary key to use a unqiue field

问题描述

我有一个名为 GameProfile 的模型，它与 User 模型是一对一的关系。我在所有设计中使用了 HyperlinkedModelSerializer 。

I have a model which is called GameProfile, which is a one to one relation with User model. I used HyperlinkedModelSerializer across all my design.

对于 GameProfile ，用户字段假设是查询的主键，它是唯一的，但我没有将其设置为主要关键。有没有办法更改django serializer的默认行为，指向 user__id 作为主键，并始终使用它来在详细视图中查看配置文件？

For the GameProfile, the user field is suppose to be the primary key for querying, it is unique but I did not set it up as a primary key. Is there a way to change the default behavior of django serializer to point to user__id as the primary key and always use it for retreiving the profile in the detail view?

class GameProfileSerializer(serializers.HyperlinkedModelSerializer):
    """ 
    """
    user_pk = serializers.Field(source='user.id')

    class Meta:
        model = GameProfile


class GameProfileViewSet(viewsets.ModelViewSet):
    """
    """
    queryset = GameProfile.objects.all()
    serializer_class = GameProfileSerializer

    def get_queryset(self):
        """ get_queryset
        """
        queryset = super(GameProfileViewSet, self).get_queryset()
        if not queryset.exists():
            raise Http404
        if self.request.user.is_authenticated() and not self.request.user.is_superuser:
            return queryset.filter(user=self.request.user)
        return queryset

请告知，提前感谢：）

推荐答案

假设您的 GameProfile 模型看起来像：

Assuming your GameProfile model looks like:

class GameProfile(models.Model)
    user = models.OneToOneField('User')

序列化程序将是：

class GameProfileSerializer(serializers.HyperlinkedModelSerializer):
    user_id = serializers.Field(source='user.id')

    class Meta:
        model = GameProfile

正确设置视图中的 .lookup_field 属性：

Set the .lookup_field attribute on the view correctly:

    lookup_field = 'user_id'

URL将是： p>

Url will be:

/gameprofile/<user_id>

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