Django 1.7数据迁移用于自定义用户模型 [英] Django 1.7 data migration for custom user model

问题描述

我已经为我的项目创建了一个自定义用户模型。我写了一个数据迁移文件，将auth.User的内容复制到我的新的自定义用户表。它似乎没有正常工作。它正在抛出低于错误，

 从django.db import migrations，transaction 
 
 @ transaction.atomic 
 def copy_old_users（apps，schema_editor）：
 User = apps.get_model（auth，User）
 CustomUser = apps.get_model（custom_auth，User）
 fields = ['id'，'username'，'email'，'first_name'，'last_name'，
'is_staff'，'is_active'，'date_joined'，'is_superuser'，
' user_objects.all（）中的用户的
 
 
 custom_user = CustomUser（）
字段中的字段：
 setattr（ custom_user，field，getattr（user，field））
 
 custom_user.save（）
 
 custom_user.groups.add（* user.groups.all（））
 custom_user.user_permissions.add（* user.user_permissions.all（））
 
 class Migration（migrations.Migration）：
 
 dependencies = [
（'auth '，'0001_initial'），
（'custom_auth ，'0001_initial'），
] 
 
 operations = [
 migrations.RunPython（copy_old_users），
] 
  / pre> 
 
 
当我运行 python manage.py migrate 时，我收到这个错误，
 unning迁移：
 应用custom_auth.0002_auto_20150605_0700 ...追溯（最近的最后一次呼叫）：
文件manage.py ，第10行，在< module> 
 execute_from_command_line（sys.argv）
文件/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/core/management/__init__.py，行385，在execute_from_command_line 
 utility.execute（）
文件/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/core/management/__init__ .py，第377行，执行
 self.fetch_command（子命令）.run_from_argv（self.argv）
文件/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7 /site-packages/django/core/management/base.py，第288行，在run_from_argv 
 self.execute（* args，** options .__ dict__）
文件/ Library / Frameworks / Python .framework / Versions / 2.7 / lib / python2.7 / site-packages / django / core / management / base.py，行338，执行
 output = self.handle（* args，** options） 
文件/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/core/management/commands/migrate.py，第166行，手头e 
 executor.migrate（targets，plan，fake = options.get（fake，False））
文件/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7 /site-packages/django/db/migrations/executor.py，第68行，迁移
 self.apply_migration（migration，fake = fake）
文件/Library/Frameworks/Python.framework/版本/ 2.7 / lib / python2.7 / site-packages / django / db / migrations / executor.py，第102行，apply_migration 
 migration.apply（project_state，schema_editor）
文件/ Library /Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/db/migrations/migration.py，第113行，应用
 operation.database_forwards（self.app_label，schema_editor ，project_state，new_state）
文件/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/db/migrations/operations/special.py，第117行，在database_forwards 
 self.code（from_state.render（），schema_editor）
文件/Library/Frameworks/Python.framework/Vers离子/ 2.7 / lib / python2.7 / site-packages / django / db / transaction.py，第394行，内部
返回func（* args，** kwargs）
文件/ Users /youngkbell/personal/workspace/test/mydjango/custom_auth/migrations/0002_auto_20150605_0700.py，第13行，在user_objects.all（）中的用户的copy_old_users 
中：
文件/ Library / Frameworks /Python.framework/Versions/2.7/lib/python2.7/site-packages/django/db/models/manager.py，第230行，__get__ 
 self.model._meta.object_name，self.model ._meta.swapped 
 AttributeError：Manager不可用;用户已被替换为'custom_auth.User'
  
 
 
解决方案
你在运行此迁移之前，应在 settings.py 中设置 AUTH_USER_MODEL ='auth.User'，此迁移完成后，更新 settings.py 至 AUTH_USER_MODEL ='custom_auth.User' 
 
I have created a custom user model for my project. I have written a data migration file to copy contents of auth.User to my new custom user table. It doesn't seem to work properly. It is throwing below error,
from django.db import migrations, transaction

@transaction.atomic
def copy_old_users(apps, schema_editor):
    User = apps.get_model("auth", "User")
    CustomUser = apps.get_model("custom_auth", "User")
    fields = ['id', 'username', 'email', 'first_name', 'last_name',
          'is_staff', 'is_active', 'date_joined', 'is_superuser',
          'last_login', 'password']

for user in User.objects.all():
    custom_user = CustomUser()
    for field in fields:
        setattr(custom_user, field, getattr(user, field))

    custom_user.save()

    custom_user.groups.add(*user.groups.all())
    custom_user.user_permissions.add(*user.user_permissions.all())

class Migration(migrations.Migration):

    dependencies = [
    ('auth', '0001_initial'),
    ('custom_auth', '0001_initial'),
    ]

    operations = [
        migrations.RunPython(copy_old_users),
    ]
When I run python manage.py migrate, I am getting this error,
unning migrations:
Applying custom_auth.0002_auto_20150605_0700...Traceback (most recent call last):
  File "manage.py", line 10, in <module>
    execute_from_command_line(sys.argv)
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/core/management/__init__.py", line 385, in execute_from_command_line
    utility.execute()
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/core/management/__init__.py", line 377, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/core/management/base.py", line 288, in run_from_argv
    self.execute(*args, **options.__dict__)
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/core/management/base.py", line 338, in execute
    output = self.handle(*args, **options)
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/core/management/commands/migrate.py", line 166, in handle
    executor.migrate(targets, plan, fake=options.get("fake", False))
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/db/migrations/executor.py", line 68, in migrate
    self.apply_migration(migration, fake=fake)
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/db/migrations/executor.py", line 102, in apply_migration
    migration.apply(project_state, schema_editor)
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/db/migrations/migration.py", line 113, in apply
    operation.database_forwards(self.app_label, schema_editor, project_state, new_state)
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/db/migrations/operations/special.py", line 117, in database_forwards
    self.code(from_state.render(), schema_editor)
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/db/transaction.py", line 394, in inner
    return func(*args, **kwargs)
  File "/Users/youngkbell/personal/workspace/test/mydjango/custom_auth/migrations/0002_auto_20150605_0700.py", line 13, in copy_old_users
    for user in User.objects.all():
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/db/models/manager.py", line 230, in __get__
    self.model._meta.object_name, self.model._meta.swapped
AttributeError: Manager isn't available; User has been swapped for 'custom_auth.User'

解决方案
You should set AUTH_USER_MODEL = 'auth.User' in settings.py before run this migrate and after this migrate finishes, update the settings.py to AUTH_USER_MODEL = 'custom_auth.User'

                        
这篇关于Django 1.7数据迁移用于自定义用户模型的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！