django中的自定义用户模型1.5 [英] custom user model in django 1.5
问题描述
我已经扩展了django 1.5用户模型，如下所示，当我将任何行插入到数据库中时，我有问题。我的models.py文件如下所示。
I have extended the django 1.5 user model as below and i am having problems when i insert any row into the database. My models.py file looks like below.
class MyUserManager(BaseUserManager):
def create_user(self, email, password=None):
if not email:
raise ValueError('Users must have an email address')
user = self.model(
email=MyUserManager.normalize_email(email),
)
user.set_password(password)
user.save(using=self._db)
return user
def create_superuser(self, email, password):
user = self.create_user(email,
password=password
)
user.is_admin = True
user.save(using=self._db)
return user
class MyUser(AbstractBaseUser):
email = models.EmailField(
verbose_name='Email address',
max_length=255,
unique=True,
db_index=True,
)
is_active = models.BooleanField(default=True)
is_admin = models.BooleanField(default=False)
objects = MyUserManager()
USERNAME_FIELD = 'email'
def get_full_name(self):
# The user is identified by their email address
return self.email
def __unicode__(self):
return self.email
我的admin.py如下所示。
And my admin.py looks like below.
class MyUserAdmin(UserAdmin):
# The forms to add and change user instances
form = UserChangeForm
add_form = UserCreationForm
# The fields to be used in displaying the User model.
# These override the definitions on the base UserAdmin
# that reference specific fields on auth.User.
list_display = ('email', 'is_admin')
list_filter = ('is_admin',)
fieldsets = (
(None, {'fields': ('email', 'password')}),
('Permissions', {'fields': ('is_admin',)}),
('Important dates', {'fields': ('last_login',)}),
)
add_fieldsets = (
(None, {
'classes': ('wide',),
'fields': ('email', 'password1', 'password2')}
),
)
search_fields = ('email',)
ordering = ('email',)
filter_horizontal = ()
// Now register the new UserAdmin...
admin.site.register(MyUser, MyUserAdmin)
// ... and, since we're not using Django's builtin permissions,
// unregister the Group model from admin.
admin.site.unregister(Group)
我从django教程（ https://docs.djangoproject.com/en/dev/topics/auth / customize /＃a-full-example ）
I followed the above from the django tutorial (https://docs.djangoproject.com/en/dev/topics/auth/customizing/#a-full-example)
现在我遇到的问题是每当我在管理员中修改任何内容时，我收到一条错误消息
Now the problem i am having is whenever i modify anything in the admin, i am getting an error message saying below.
（1452，'无法添加或更新子行：外键约束失败（ csiop 。 django_admin_log ，CONSTRAINT user_id_refs_id_c8665aa FOREIGN KEY（ user_id ）参考 auth_user （ id ））'）
(1452, 'Cannot add or update a child row: a foreign key constraint fails (csiop.django_admin_log, CONSTRAINT user_id_refs_id_c8665aa FOREIGN KEY (user_id) REFERENCES auth_user (id))')
它看起来像django_admin_log表总是需要外部引用auth_user模型。但是，因为我创建了一个客户用户模型，当我创建一个超级用户时，用户的详细信息只存储在客户MyUser表中，并且在auth_user模型中没有创建任何条目，这似乎是导致问题的。
So, it looks like django_admin_log table always needs foreign key reference to auth_user model. But because i created a customer user model, when i create a super user the user details are only stored in the customer MyUser table and no entry gets created in the auth_user model, which seems to be causing the issue.
我如何解决这个问题？请建议。
How do i solve this issue ? Please suggest.
感谢
Sreekanth
Thanks Sreekanth
推荐答案
看起来非常像一个（PostgreSQL）数据库错误 - 不是Django错误。 （auth_user）在数据库结构中的ForeignKey约束中被引用（仍然）。这样的事情不应该存在于您的自定义模型中，这被称为MyUser。在这种情况下，引用应该是accounts_myuser或myappname_myuser。
This looks very much like a (PostgreSQL) database error - not a Django error. "auth_user" is (still) referenced in a ForeignKey constraint in your database structure. Such a thing shouldn't exist with your custom model, which is called "MyUser". In this case, the reference should be something like "accounts_myuser" or "myappname_myuser".
我猜，你已经更新了一个已经存在的代码，包括一个旧的数据库。如果您不需要旧的管理员日志，只需删除/删除名为django_admin_log的表，然后运行python manage.py syncdb（或python manage.py migrate，为1.7），让Django重新创建
I guess, you've updated an already existing code including an old database. If you don't need the old admin logs, simply delete/drop the table called "django_admin_log" and then run "python manage.py syncdb" (or "python manage.py migrate" as of 1.7) to let Django re-create this table from scratch.
尽管如此，如果您有其他表格引用了旧Django用户模型，那么您将再次运行同样的问题在其他地方。
Be careful, though: If you have other tables referencing the "old" Django User model, you'll run again into the same kind of trouble in other locations.
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