drf:api端点不输出所有数据

使用django rest framework创建的api端点不会输出所有序列化数据。

InstagramGeoGraficsSerializer公司

class InstagramGeograficsSerializer(serializers.ModelSerializer):
    city = InstagramGeoCitySerializer(read_only=True)

    class Meta:
        model = InstagramGeograficsAnalitics
        fields = ('city', 'percentage',)

instagramethnicserializer软件

class InstagramEthnicSerializer(serializers.ModelSerializer):
    class Meta:
        model = InstagramEthnicAnalitics
        fields = ('language', 'percentage',)

instagramdemographicsserializer软件

class InstagramDemographicsSerializer(serializers.ModelSerializer):
    class Meta:
        model = InstagramDemographicsAnalitics
        fields = ('age_group', 'gender', 'percentage', 'full_percentage',)

Instagramseriazer公司

class InstagramSerializer(serializers.HyperlinkedModelSerializer):
    geographics = InstagramGeograficsSerializer(many=True, read_only=True)
    demographics = InstagramDemographicsSerializer(many=True, read_only=True)
    ethnic = InstagramEthnicSerializer(many=True, read_only=True)

    class Meta:
        model = Instagram
        fields = ('id', 'userid', 'username', 'full_name', 'avatar', 'bio',
                  'website', 'media_count', 'follows_count',
                  'subscriber_count', 'engagement_rate', 'approval_rate',
                  'discussion_rate', 'male_percentage', 'female_percentage', 'geographics', 'demographics', 'ethnic',)

我的 视图.py

class InstagramDetail(generics.RetrieveAPIView):
    permission_classes = (permissions.IsAuthenticatedOrReadOnly,)
    queryset = Instagram.objects.all()
    serializer_class = InstagramSerializer

最后,api只提供 民族的 ,并且不包含 地理 和 人口统计学的

{
    "count": 2,
    "next": null,
    "previous": null,
    "results": [
        {
            "id": 2,
            "userid": "3045727148",
            "username": "test2",
            "full_name": "full name",
            "avatar": "",
            "bio": "23",
            "website": "",
            "media_count": 0,
            "follows_count": 0,
            "subscriber_count": 0,
            "engagement_rate": "0.0000000",
            "approval_rate": "0.0000000",
            "discussion_rate": "0.0000000",
            "male_percentage": "0.000",
            "female_percentage": "0.000",
            "ethnic": []
        }

upd模型instagram

class Instagram(models.Model):
    class Meta:
        permissions = (
            ('view_all_instagram', 'Can view all instagram'),
            ('change_all_instagram', 'Can change all instagram'),
        )

    credential = CredentialsField()
    userid = models.CharField(max_length=255, unique=True)

    platform = GenericRelation(Platform,
                               related_query_name='instagram_platform',
                               content_type_field='content_type',
                               object_id_field='object_id')

    username = models.CharField(max_length=50, blank=True, null=True)
    full_name = models.CharField(max_length=50, blank=True, null=True)
    avatar = models.URLField(max_length=512, blank=True, null=True)
    bio = models.CharField(max_length=255, blank=True, null=True)
    website = models.URLField(max_length=255, blank=True, null=True)
    city = models.CharField(max_length=255, blank=True, null=True)
    media_count = models.PositiveIntegerField(blank=True, default=0)
    follows_count = models.PositiveIntegerField(blank=True, default=0)
    subscriber_count = models.PositiveIntegerField(blank=True, default=0)
    engagement_rate = models.DecimalField(default=0, max_digits=14, decimal_places=7)
    approval_rate = models.DecimalField(default=0, max_digits=14, decimal_places=7)
    discussion_rate = models.DecimalField(default=0, max_digits=14, decimal_places=7)
    male_percentage = models.DecimalField(default=0, max_digits=5, decimal_places=3)
    female_percentage = models.DecimalField(default=0, max_digits=5, decimal_places=3)

Instagramethanitics公司

class InstagramEthnicAnalitics(models.Model):
    class Meta:
        permissions = (
            (
                'view_all_instagram_ethnic_analytics',
                'Can view all_instagram_ethnic_analytics'
            ),
            (
                'change_all_instagram_ethnic_analytics',
                'Can change all_instagram_ethnic_analytics'
            ),
        )

    instagram = models.ForeignKey(Instagram, related_name='ethnic')
    language = models.CharField(max_length=20)
    percentage = models.DecimalField(default=0, max_digits=5, decimal_places=3)

instagramdemographicsanalitics公司

class InstagramDemographicsAnalitics(models.Model):
    class Meta:
       #unique_together = (('instagram', 'age_group', 'gender', ),)
        permissions = (
            (
                'view_all_instagram_demographics_analytics', 
                'Can view all_instagram_demographics_analytics'
            ),
            (
                'change_all_instagram_demographics_analytics',
                'Can change all_instagram_demographics_analytics'
            ),
        )
    instagram = models.ForeignKey(Instagram)
    age_group = models.CharField(max_length=50)
    gender = models.CharField(max_length=10, default='female')
    percentage = models.DecimalField(default=0, max_digits=5, decimal_places=3)
    is_full_gender = models.BooleanField(default=False)
    full_percentage = models.DecimalField(default=0, max_digits=5, decimal_places=2)