我有一个用户模型和一个音乐会模型。音乐会模型对用户模型具有m2m字段。在Concert视图中,我想要一个与Concert模型有关的用户字典列表。这是我得到的:
models.py
class User(AbstractBaseUser, PermissionsMixin):
objects = UserManager()
name = models.CharField(max_length = 255, default = "")
date_added = models.DateField(auto_now=False, auto_now_add=True)
email = models.EmailField(unique=True, db_index=True)
(more but irrelevant)
class Concert(models.Model):
name = models.CharField(max_length = 255)
technicians = models.ManyToManyField(User)
serializers.py
class ConcertListSerializer(serializers.ModelSerializer):
technicians = UserDetailSerializer(
many=True,
read_only=True,
source='concert_set'
)
class Meta:
model = models.Concert
fields = [
'name',
'technicians',
'id',
]
class UserDetailSerializer(ModelSerializer):
class Meta:
model = User
fields = [
'name',
'email',
'id',
]
我期望的是ConcertListSerializer中的technicals-fields是包含用户名称,电子邮件和ID的词典列表。为什么它不提供DRF Documentation on Nested Serializers所说的那样呢?
最佳答案
为什么添加source
,您使用与模型字段相同的序列化器字段,只需将其删除即可。
class ConcertListSerializer(serializers.ModelSerializer):
technicians = UserDetailSerializer(
many=True,
read_only=True,
)
关于python - DRF3在m2m关系上创建嵌套的序列化器,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/46561844/