我在serializer.py中使用了此代码:
group = Group.objects.get()
group.user_set.add(self.object)
当Group Field只有一个项目时,它可以正常工作:它在DB中添加没有问题。 但是当我在组列表字段中添加多个项目时,我收到一个错误:
get() returned more than one Group -- it returned 2!
你建议我做些什么来解决这个问题?
Image: For one item, it works fine
Image: With more than one item, I am getting this error
这是我的完整代码:
from rest_framework import serializers
from . import models
from django.contrib.auth import get_user_model
from django.contrib.auth.models import Group
User = get_user_model()
class UserSerializer(serializers.ModelSerializer):
password = serializers.CharField(write_only=True)
confirm_password = serializers.CharField(write_only=True)
def validate(self, data):
if not data.get('password') or not data.get('confirm_password'):
raise serializers.ValidationError("Please enter a password and ""confirm it.")
if data.get('password') != data.get('confirm_password'):
raise serializers.ValidationError("Those passwords don't match.")
return data
def create(self, validated_data):
user = get_user_model().objects.create(
username=validated_data['username'],
first_name=validated_data['first_name'],
last_name=validated_data['last_name'],
email=validated_data['email']
)
group = Group.objects.get()
group.user_set.add(self.object)
user.set_password(validated_data['password'])
user.save()
return user
class Meta:
model = get_user_model()
fields = (
'username',
'password',
'confirm_password',
'first_name',
'last_name',
'email',
'groups',
)
答案 0 :(得分:0)
试试这个
from django.contrib.auth.models import Group,User
user_list = User.objects.filter(some_filtering)
group = Group.objects.get(id=group_id)
group.user_set.add(*user_list)
在这里,我假设您有一些逻辑来获取多个用户对象,我将其存储到user_list
变量。它可以作为add()
传递给argument list
注意: user_list
可以是list of user instances
或list of user-ids