我的配置文件对象没有在用户序列化程序中序列化

Question

我正在使用 Django rest auth 来验证我的用户，效果很好。我的模型是如何设置的，我有用于身份验证的自定义用户模型，我还有一个用信号创建的配置文件模型。

我希望在 URL 中获取用户时，该用户的配置文件也称为用户中的对象。

我的 models.py（我没有包括一些模型，例如用户管理器、技能，e.t.c，因为我觉得它们不相关）

class User(AbstractBaseUser, PermissionsMixin):
    username = None
    email = models.EmailField(max_length=254, unique=True)
    fullname = models.CharField(max_length=250)
    is_staff = models.BooleanField(default=False)
    is_superuser = models.BooleanField(default=False)
    is_active = models.BooleanField(default=True)
    last_login = models.DateTimeField(null=True, blank=True)
    date_joined = models.DateTimeField(auto_now_add=True)


    USERNAME_FIELD = 'email'
    REQUIRED_FIELDS = ['fullname']

    objects = UserManager()


class Profile(models.Model):
    '''
    Note:
    profile photo is expecting photos link gotten from cloudnairy from the frontend
    - The height is calculated in feets and inches
    - Need to sort out location (lives in)
    - Need to add an age function
    - Need to add achievemnet as a foreign field 
    - Need to add education also as a foreign field
    - Add follow functionality
    '''
    user = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.CASCADE)
    date_of_birth = models.DateField(blank=True, verbose_name="DOB", null=True)
    bio = models.TextField(max_length=500, blank=True, null=True)
    profile_photo = models.CharField(blank=True, max_length=300, null=True)
    skills = models.ManyToManyField(Skill)
    sex = models.CharField(max_length=1, choices=SEX, blank=True, null=True)
    type_of_body = models.CharField(max_length=8, choices=BODYTYPE, blank=True, null=True)
    feet = models.PositiveIntegerField(blank=True, null=True)
    inches = models.PositiveIntegerField(blank=True, null=True)
    lives_in = models.CharField(max_length=50, blank=True, null=True)
    updated_on = models.DateTimeField(auto_now_add=True)

serializers.py代码

class ProfileSerializer(serializers.ModelSerializer):

    class Meta:
        model = Profile
        fields = "__all__"

        read_only_fields = ('pk',)


class CustomUserDetailsSerializer(serializers.ModelSerializer):

    profile = ProfileSerializer(read_only=True)

    class Meta:
        model = User
        fields = ('pk', 'email', 'fullname', 'profile')
        read_only_fields = ('email', 'fullname', 'profile')

view.py

class ListUsersView(APIView):

    permission_classes = [AllowAny]

    def get(self, request):
        user = User.objects.all()
        serializer = CustomUserDetailsSerializer(user, many=True)
        return Response(serializer.data)

urls.py

url(r'^list-users/$', ListUsersView.as_view(), name='list-users'),

我得到的JSON回应

[
    {
        "pk": 1,
        "email": "opeyemiodedeyi@gmail.com",
        "fullname": "opeyemiodedeyi"
    },
    {
        "pk": 2,
        "email": "odedeyiopeyemi94@gmail.com",
        "fullname": "opeyemi odedeyi"
    }
]

如何让配置文件显示在响应中？

Answer 1

方法一

使用source (DRF doc)参数

class CustomUserDetailsSerializer(serializers.ModelSerializer):
    profile = ProfileSerializer(read_only=True, <b>source="profile_set"</b>)

    class Meta:
        model = User
        fields = ('pk', 'email', 'fullname', 'profile')
        read_only_fields = ('email', 'fullname', 'profile')

因为Profile与User是反向关系，所以需要指定reverse lookup，也就是 profile_set

方法二

改变related_name (Django doc)模型，

class Profile(models.Model):
    user = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.CASCADE, <b>related_name='profile'</b>)
    ...

---

建议的更改

# models.py
class Profile(models.Model):
    user = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.CASCADE, <b>related_name='profiles'</b>)
    ...


# serializers.py
class CustomUserDetailsSerializer(serializers.ModelSerializer):
    <b>profiles</b> = ProfileSerializer(read_only=True)

    class Meta:
        model = User
        fields = ('pk', 'email', 'fullname', <b>'profiles'</b>)
        read_only_fields = ('email', 'fullname', <b>'profiles'</b>)

参考资料

1. 什么是反向关系？
2. Django: Many-To-One Relation