我有两个序列化器... MyRegisterSerializer
继承并扩展了流行的应用程序/程序包django-rest-auth,该程序/程序包连接到相当标准的用户表。我还为定制应用程序TeamSerializer(与用户一对多关系)提供了模型和序列化器。当用户注册时,我希望他们能够同时加入一个团队,因此我需要以某种方式创建一个团队,返回团队ID,然后将该ID传递给RegisterSerializer,以便团队可以存储在用户表中。我知道我可以打两次电话,首先创建团队并返回值,然后将其传递给寄存器序列化器,但是有没有办法在一个序列化器中完成所有这些工作?我是python的n00b使用者,考虑到我必须按原样返回get_cleaned_data()
函数,因此找不到一个很好的例子。谢谢!
class TeamSerializer(serializers.ModelSerializer):
class Meta:
model = Team
fields = ('id', 'name', 'logo', 'user')
class MyRegisterSerializer(RegisterSerializer):
first_name = serializers.CharField()
last_name = serializers.CharField()
def get_cleaned_data(self):
super(MyRegisterSerializer, self).get_cleaned_data()
return {
'team_id': <How do I get this value>
'username': self.validated_data.get('username', ''),
'position': self.validated_data.get('password1', ''),
'email': self.validated_data.get('email', ''),
'first_name': self.validated_data.get('first_name', ''),
'last_name': self.validated_data.get('last_name', '')
}
答案 0 :(得分:4)
这取决于您要如何创建团队:
您应该可以使用此自定义字段:
from rest_framework.relations import PrimaryKeyRelatedField
class TeamPrimaryKeyRelatedField(PrimaryKeyRelatedField):
def to_internal_value(self, data):
if self.pk_field is not None:
data = self.pk_field.to_internal_value(data)
try:
obj, created = self.get_queryset().get_or_create(
pk=data,
defaults=get_team_data(),
)
return obj
except (TypeError, ValueError):
self.fail('incorrect_type', data_type=type(data).__name__)
并在序列化器中使用它:
class MyRegisterSerializer(RegisterSerializer):
team = TeamPrimaryKeyRelatedField()
# ...
这似乎是writable nested serializers的完美用例:
class TeamSerializer(serializers.ModelSerializer):
class Meta:
model = Team
fields = ('id', 'name', 'logo', 'user')
class MyRegisterSerializer(RegisterSerializer):
first_name = serializers.CharField()
last_name = serializers.CharField()
team = TeamSerializer()
def create(self, validated_data):
team_data = validated_data.pop('team')
# You could do this if the user is not necessary in the team object:
team = Team.objects.create(**team_data)
user = super().create(team=team, **validated_data)
# Otherwise:
user = super().create(**validated_data)
# Should this be a many-to-many relationship?
team = Team.objects.create(user=user, **team_data)
# I don't know if this works/you need it:
self.team = team
# Or it should be like this?
self.validated_data['team'] = team
return user
我不确定您到底需要什么。让我知道您是否需要进一步的帮助。