问题描述
我修改了用户身份验证以创建自定义用户。 在我的 user_profile 模型中，我使用电子邮件而不是用户名登录。为此，我扩展了 Abstractusermodel 并实现了管理器和序列化程序，如下所述。
我的 makemigrations 命令执行成功，但是当我运行迁移时出现错误。
我删除了整个数据库并重新开始迁移。由于项目正在开发中，我可以根据需要选择操作数据库。
环境 Python==3.9.1 姜戈==3.2.3 djangorestframework==3.12.4
user_profiles
manager.py
from django.contrib.auth.base_user import BaseUserManager
from django.utils.translation import ugettext_lazy as _
class CustomUserManager(BaseUserManager):
"""
Custom user model manager where email is the unique identifiers
for authentication instead of usernames.
"""
def create_user(self,email,password,**extra_fields):
"""
Create and save a User with the given email and password.
"""
if email is None:
raise ValueError(_('The Email must be set'))
email = self.normalize_email(email)
user = self.model(email=email,**extra_fields)
user.set_password(password)
user.save()
return user
def create_superuser(self,**extra_fields):
"""
Create and save a SuperUser with the given email and password.
"""
extra_fields.setdefault('is_staff',True)
extra_fields.setdefault('is_superuser',True)
extra_fields.setdefault('is_active',True)
if extra_fields.get('is_staff') is not True:
raise ValueError(_('Superuser must have is_staff=True.'))
if extra_fields.get('is_superuser') is not True:
raise ValueError(_('Superuser must have is_superuser=True.'))
return self.create_user(email,**extra_fields)
models.py
from django.db import models
from .manager import CustomUserManager
from django.contrib.auth.models import AbstractUser
from django.utils.translation import ugettext_lazy as _
class CustomUser(AbstractUser):
username = None
email = models.EmailField(_('email address'),unique=True)
...
USERNAME_FIELD = 'email'
required_FIELDS = []
objects = CustomUserManager()
def __str__(self):
return self.email
serializer.py
from .models import CustomUser
from rest_framework import serializers
class UserSerializer(serializers.ModelSerializer):
class Meta:
model = CustomUser
exclude = '__all__'
extra_kwargs = {
"password": {"write_only": True},}
settings.py
INSTALLED_APPS = [
'django.contrib.admin','django.contrib.auth','django.contrib.contenttypes','django.contrib.sessions','django.contrib.messages','django.contrib.staticfiles','user_profile',...
]
DJOSER = {
...
'LOGIN_FIELD': 'email',#Default: User.USERNAME_FIELD where User is the model set with Django’s setting AUTH_USER_MODEL.
'SERIALIZERS': {
'user': 'user_profile.serializer.UserSerializer',},}
AUTH_USER_MODEL = 'user_profile.CustomUser'
错误：
(api) PS C:\Users\...\api> python.exe .\manage.py makemigrations
Migrations for 'user_profile':
user_profile\migrations\0003_auto_20210731_0838.py
- Create model CustomUser
- Delete model UserProfileModel
(api) PS C:\Users\...\api> python.exe .\manage.py migrate
Operations to perform:
Apply all migrations: activity_log,admin,audit_trail,auth,authtoken,contenttypes,django_apscheduler,guardian,otp_hotp,otp_static,otp_totp,sensor_data,sensor_details,sessions,user_profile
Running migrations:
Applying activity_log.0001_initial... OK
Applying contenttypes.0001_initial... OK
Applying contenttypes.0002_remove_content_type_name... OK
Applying auth.0001_initial... OK
Applying auth.0002_alter_permission_name_max_length... OK
Applying auth.0003_alter_user_email_max_length... OK
Applying auth.0004_alter_user_username_opts... OK
Applying auth.0005_alter_user_last_login_null... OK
Applying auth.0006_require_contenttypes_0002... OK
Applying auth.0007_alter_validators_add_error_messages... OK
Applying auth.0008_alter_user_username_max_length... OK
Applying auth.0009_alter_user_last_name_max_length... OK
Applying auth.0010_alter_group_name_max_length... OK
Applying auth.0011_update_proxy_permissions... OK
Applying auth.0012_alter_user_first_name_max_length... OK
Applying user_profile.0001_initial... OK
Applying admin.0001_initial...Traceback (most recent call last):
File "C:\Users\...\api\manage.py",line 22,in <module>
main()
File "C:\Users\...\api\manage.py",line 18,in main
execute_from_command_line(sys.argv)
File "C:\Users\...\lib\site-packages\django\core\management\__init__.py",line 419,in execute_from_command_line
utility.execute()
File "C:\Users\...\lib\site-packages\django\core\management\__init__.py",line 413,in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "C:\Users\...\lib\site-packages\django\core\management\base.py",line 354,in run_from_argv
self.execute(*args,**cmd_options)
File "C:\Users\...\lib\site-packages\django\core\management\base.py",line 398,in execute
output = self.handle(*args,**options)
File "C:\Users\...\lib\site-packages\django\core\management\base.py",line 89,in wrapped
res = handle_func(*args,**kwargs)
File "C:\Users\...\lib\site-packages\django\core\management\commands\migrate.py",line 244,in handle
post_migrate_state = executor.migrate(
File "C:\Users\...\lib\site-packages\django\db\migrations\executor.py",line 117,in migrate
state = self._migrate_all_forwards(state,plan,full_plan,fake=fake,fake_initial=fake_initial)
File "C:\Users\...\lib\site-packages\django\db\migrations\executor.py",line 147,in _migrate_all_forwards
state = self.apply_migration(state,migration,line 227,in apply_migration
state = migration.apply(state,schema_editor)
File "C:\Users\...\lib\site-packages\django\db\migrations\migration.py",line 126,in apply
operation.database_forwards(self.app_label,schema_editor,old_state,project_state)
File "C:\Users\...\lib\site-packages\django\db\migrations\operations\models.py",line 92,in database_forwards
schema_editor.create_model(model)
File "C:\Users\...\lib\site-packages\django\db\backends\base\schema.py",line 329,in create_model
sql,params = self.table_sql(model)
File "C:\Users\...\lib\site-packages\django\db\backends\base\schema.py",line 162,in table_sql
deFinition,extra_params = self.column_sql(model,field)
File "C:\Users\...\lib\site-packages\django\db\backends\base\schema.py",line 215,in column_sql
db_params = field.db_parameters(connection=self.connection)
File "C:\Users\...\lib\site-packages\django\db\models\fields\related.py",line 1004,in db_parameters
return {"type": self.db_type(connection),"check": self.db_check(connection)}
File "C:\Users\...\lib\site-packages\django\db\models\fields\related.py",line 1001,in db_type
return self.target_field.rel_db_type(connection=connection)
File "C:\Users\...\lib\site-packages\django\db\models\fields\related.py",line 897,in target_field
return self.foreign_related_fields[0]
File "C:\Users\...\lib\site-packages\django\utils\functional.py",line 48,in __get__
res = instance.__dict__[self.name] = self.func(instance)
File "C:\Users\...\lib\site-packages\django\db\models\fields\related.py",line 644,in foreign_related_fields
return tuple(rhs_field for lhs_field,rhs_field in self.related_fields if rhs_field)
File "C:\Users\...\lib\site-packages\django\utils\functional.py",line 632,in related_fields
return self.resolve_related_fields()
File "C:\Users\...\lib\site-packages\django\db\models\fields\related.py",line 936,in resolve_related_fields
related_fields = super().resolve_related_fields()
File "C:\Users\...\lib\site-packages\django\db\models\fields\related.py",line 615,in resolve_related_fields
raise ValueError('Related model %r cannot be resolved' % self.remote_field.model)
ValueError: Related model 'user_profile.customuser' cannot be resolved
解决方法
- 删除数据库
- 删除所有迁移文件
- 运行 makemigrations
- 运行迁移
希望，这有效。