django rest框架中的多对多过滤器

Question

我有一个关于过滤检索与多对多相关的数据的问题

models.py

class Team(models.Model):
    name = models.CharField(blank=True, unique=True, max_length=100)
    players = models.ManyToManyField(User, blank=True, related_name='players')

seializers.py

class MyTeamListSerializer(ModelSerializer):

    class Meta:
        model = Team
        fields = ['name']

views.py

class MyTeamListAPIView(ListAPIView):
    queryset = Team.objects.all()
    serializer_class = MyTeamListSerializer
    permission_classes = [IsOwnerOrReadOnly]
    pagination_class = ProfileLimitPagination
    filter_backends = (filters.DjangoFilterBackend,)
    filter_fields = ('players')
    filter_class = TeamFilter

filters.py

class TeamFilter(django_filters.FilterSet):
    teams = django_filters.CharFilter(
        players='players__id',
        lookup_type='contains',
    )

    class Meta:
        model = Team
        fields = ('players', 'teams',)

现在，我要做的是，检索我所在球队的列表。

所以我想请求我的团队获取我的团队的响应列表。

我不知道确切的问题是什么，但我是 django rest 框架中的新手。

所以，请任何人有解决方案，请在我的情况下帮助我，或者如果您有其他解决方案来做我想做的事。

谢谢

Answer 1

如果您需要获取特定球员的球队名单，请使用exact 查找而不是contains：

class TeamFilter(django_filters.FilterSet):
    teams = django_filters.NumberFilter(
        field_name='players_id',
        lookup_type='exact',
    )

    class Meta:
        model = Team
        fields = ('players', 'teams',)

同时使用field_name 作为参数而不是players。

如果你只想显示当前用户的团队，你最好覆盖视图的get_queryset 方法：

class MyTeamListAPIView(ListAPIView):
    serializer_class = MyTeamListSerializer
    permission_classes = [IsOwnerOrReadOnly]
    pagination_class = ProfileLimitPagination
    filter_backends = (filters.DjangoFilterBackend,)
    filter_fields = ('players')
    filter_class = TeamFilter

    def get_queryset(self):
        return Team.objects.filter(players=self.request.user)