Question

我正在尝试将Users表嵌套在Relationships表中。所以不要这样：

[
    {
        "user": 1,
        "related_user": 2,
        "relationship": "followed_by"
    }
]

我想要得到这个：

[
    {
        "user": {
            "username": "user1",
            "name": "User 1",
            "email": "bla",
            "phone": "bla",
            "date_joined": "2017-11-01T21:34:13.101256Z"
         },
        "related_user": {
            "username": "user2",
            "name": "User 2",
            "email": "bla",
            "phone": "bla",
            "date_joined": "2017-11-01T21:34:13.101256Z"
         },
        "relationship": "followed_by"
    }
]

我查阅了教程，并尝试添加serializers.RelatedField , UserSerializer(many=true, read-only=true)等，但没有任何效果

Models.py

class User(models.Model):
    username = models.CharField(max_length=255)
    name = models.CharField(max_length=255)
    email = models.CharField(max_length=255)
    phone = models.CharField(max_length=255)
    date_joined = models.DateTimeField(auto_now_add=True, blank=True)

    def __str__(self):
        return str(self.pk) + ", " + self.username


RELATIONSHIP_CHOICE = [
    ("follows", "follows"),
    ("followed_by", "followed_by"),
    ("none", "none"),
]

class Relationship(models.Model):
    user = models.ForeignKey(User, related_name="primary_user", null=True)
    related_user = models.ForeignKey(User, related_name="related_user", null=True)
    relationship = models.CharField(max_length=40, choices=RELATIONSHIP_CHOICE, default=RELATIONSHIP_CHOICE[0])

Serializers.py

from rest_framework import serializers
from . import models

class UserSerializer(serializers.ModelSerializer):
    class Meta:
        model = models.User
        fields = (
            'username',
            'name',
            'email',
            'phone',
            'date_joined',
        )


class RelationshipSerializer(serializers.ModelSerializer):
    related_user = UserSerializer(many=True)

    class Meta:
        model = models.Relationship
        fields = (
            'user',
            'related_user',
            'relationship',
            'related_user'
        )

我尝试将相关用户添加到我的序列化程序，但它没有用。我收到一个错误：'用户'对象不可迭代

感谢任何帮助。

Answer 1

user = UserSerializer(read_only=True, many=True)

user = UserSerializer(read_only=True)适用于多个字段，Parse error: syntax error, unexpected 'return'(T_RETURN)适用于ForeignKey字段。

Django Rest Framework外键嵌套

1 个答案: