python - Django Rest 框架 - 发布外键
问题描述
我是 Django Rest Framework 的新手,并查看了一些教程。现在我正在尝试创建自己的结构,如下所示。我想创建一个可以的用户,然后单独创建一个配置文件。
模型.py
class User(models.Model):
name = models.CharField(max_length=32)
surname = models.CharField(max_length=32)
facebook_id = models.TextField(null=True)
is_sms_verified = models.BooleanField(default=False)
created = models.DateTimeField(default=timezone.now)
updated = models.DateTimeField(default=timezone.now)
status = models.BooleanField(default=1)
def __str__(self):
return self.name+" "+self.surname
class Profile(models.Model):
user = models.ForeignKey('User',on_delete=models.CASCADE)
email = models.CharField(max_length=32)
birthday = models.DateField(null=True)
bio = models.TextField(null=True)
points = models.IntegerField(default=0)
created = models.DateTimeField(default=timezone.now)
updated = models.DateTimeField(default=timezone.now)
def __str__(self):
return self.user.name+ " " + self.user.surname
序列化程序.py
class UserSerializer(serializers.ModelSerializer):
class Meta:
model=User
fields = ('id','name','surname','facebook_id','is_sms_verified',)
read_only_fields = ('created','updated')
class ProfileSerializer(serializers.ModelSerializer):
user = UserSerializer(read_only=True)
class Meta:
model=Profile
fields=('id','user','email','birthday','bio','points')
read_only_fields = ('created','updated')
视图.py
@api_view(['POST'])
def profile_create(request):
serializer = ProfileSerializer(data=request.data)
if serializer.is_valid():
serializer.save()
return JsonResponse(serializer.data, status = status.HTTP_201_CREATED)
return JsonResponse(serializer.errors , status= status.HTTP_400_BAD_REQUEST)
我要发布的数据
{
"user_id": {
"id": 2
},
"email": "xxx@gmail.com",
"birthday": "1991-05-28",
"bio": "qudur",
"points": 31
}
我得到的错误;
NOT NULL constraint failed: core_profile.user_id
我在哪里做错了?谢谢!
解决方案
你ProfileSerializer
有. user
_ readonly
所以你需要改变它。我建议这样做
class ProfileSerializer(serializers.ModelSerializer):
class Meta:
model=Profile
fields=('id','user','email','birthday','gender','bio','points')
read_only_fields = ('created','updated')
def to_representation(self, instance):
self.fields['user'] = UserSerializer(read_only=True)
return super(ProfileSerializer, self).to_representation(instance)
如果你这样做,你可以user
为 POST 提供你的普通 ID
{
"user": 2,
"email": "xxx@gmail.com",
"birthday": "1991-05-28",
"bio": "qudur",
"points": 31
}
当您读取数据时,它看起来像这样
{
"user": {
"id": 2,
"name": "Name",
"surname": "Surname",
...
},
"email": "xxx@gmail.com",
"birthday": "1991-05-28",
"bio": "qudur",
"points": 31
}
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