Вот рассматриваемая ошибка:
IntegrityError в / admin / accounts / user /
Ошибка ограничения FOREIGN KEY
Я искал в другом месте и не смог найти простого решения. Я считаю, что эта ошибка связана с тем, что я использовал пользовательскую модель User, в которой я наследую от AbstractBaseUser, потому что я хочу, чтобы на моем веб-сайте не было имен пользователей, а вместо этого пользователи определялись в первую очередь по их электронной почте. Я нахожусь на начальном уровне для использования Django, а также всего, что связано с реляционными базами данных.
#src/accounts.models.py
from django.conf import settings
from django.db import models
from django.db.models.signals import pre_save, post_save
from django.contrib.auth.models import (
AbstractBaseUser, BaseUserManager
)
from django.core.mail import send_mail
from django.template.loader import get_template
class UserManager(BaseUserManager):
def create_user(self, email, full_name=None, password=None, is_active=True, is_staff=False, is_admin=False):
if not email:
raise ValueError("Users must have an email address")
if not password:
raise ValueError("Users must have a password")
user_obj = self.model(
email = self.normalize_email(email),
full_name=full_name
)
user_obj.set_password(password) # change user password
user_obj.staff = is_staff
user_obj.admin = is_admin
user_obj.is_active = is_active
user_obj.save(using=self._db)
return user_obj
def create_staffuser(self, email,full_name=None, password=None):
user = self.create_user(
email,
full_name=full_name,
password=password,
is_staff=True
)
return user
def create_superuser(self, email, full_name=None, password=None):
user = self.create_user(
email,
full_name=full_name,
password=password,
is_staff=True,
is_admin=True
)
return user
class User(AbstractBaseUser):
email = models.EmailField(max_length=255, unique=True)
full_name = models.CharField(max_length=255, blank=True, null=True)
is_active = models.BooleanField(default=True) # can login
staff = models.BooleanField(default=False) # staff user non superuser
admin = models.BooleanField(default=False) # superuser
timestamp = models.DateTimeField(auto_now_add=True)
USERNAME_FIELD = 'email' #username
# USERNAME_FIELD and password are required by default
REQUIRED_FIELDS = [] #['full_name'] #python manage.py createsuperuser
objects = UserManager()
def __str__(self):
return self.email
class EmailActivation(models.Model):
user = models.ForeignKey(User,
blank=True,
null=True,
on_delete=models.CASCADE
) # required on Django 2.0+ deletes child objects on_delete
#the error must be caused by this
email = models.EmailField()
key = models.CharField(max_length=120, blank=True, null=True)
activated = models.BooleanField(default=False)
forced_expired = models.BooleanField(default=False)
expires = models.IntegerField(default=7) # 7 Days
timestamp = models.DateTimeField(auto_now_add=True)
update = models.DateTimeField(auto_now=True)
def __str__(self):
return self.email
def regenerate(self):
self.key = None
self.save()
if self.key is not None:
return True
return False
def send_activation(self):
if not self.activated and not self.forced_expired:
if self.key:
base_url = getattr(settings, 'BASE_URL', '<my-domain>')
key_path = self.key # use reverse
path = "{base}{path}".format(base=base_url, path=key_path)
context = {
'path': path,
'email': self.email
}
txt_ = get_template("registration/emails/verify.txt").render(context)
html_ = get_template("registration/emails/verify.html").render(context)
subject = '1-Click Email Verification'
from_email = settings.DEFAULT_FROM_EMAIL
recipient_list = [self.email]
sent_mail = send_mail(
subject,
txt_,
from_email,
recipient_list,
html_message=html_,
fail_silently=False,
)
return sent_mail
return False
def pre_save_email_activation(sender, instance, *args, **kwargs):
if not instance.activated and not instance.forced_expired:
if not instance.key:
instance.key = unique_key_generator(instance)
pre_save.connect(pre_save_email_activation, sender=EmailActivation)
def post_save_user_create_reciever(sender, instance, created, *args, **kwargs):
if created:
obj = EmailActivation.objects.create(user=instance, email=instance.email)
obj.send_activation()
post_save.connect(post_save_user_create_reciever, sender=User)
class GuestEmail(models.Model):
email = models.EmailField()
active = models.BooleanField(default=True)
update = models.DateTimeField(auto_now=True)
timestamp = models.DateTimeField(auto_now_add=True)
def __str__(self):
return self.email
РЕДАКТИРОВАТЬ: В соответствии с просьбой Тома Каррика, вот моя полная трассировка:
> Environment:
>
>
>Request Method: POST
>Request URL: http://127.0.0.1:8000/admin/accounts/user/
>Django Version: 2.2.12
>Python Version: 3.6.9
>Installed Applications:
>['django.contrib.admin',
> 'django.contrib.auth',
> 'django.contrib.contenttypes',
> 'django.contrib.sessions',
> 'django.contrib.messages',
> 'django.contrib.staticfiles',
> 'storages',
> 'accounts',
> 'addresses',
> 'analytics',
> 'billing',
> 'carts',
> 'marketing',
> 'orders',
> 'products',
> 'search',
> 'tags']
>Installed Middleware:
>['django.middleware.security.SecurityMiddleware',
> 'django.contrib.sessions.middleware.SessionMiddleware',
> 'django.middleware.common.CommonMiddleware',
> 'django.middleware.csrf.CsrfViewMiddleware',
> 'django.contrib.auth.middleware.AuthenticationMiddleware',
> 'django.contrib.messages.middleware.MessageMiddleware',
> 'django.middleware.clickjacking.XFrameOptionsMiddleware']
>
>
>
>Traceback:
>
>File "/home/ray/Dev/rxvenv/lib/python3.6/site-packages/django/db/backends/utils.py" in _execute
> 84. return self.cursor.execute(sql, params)
>
>File "/home/ray/Dev/rxvenv/lib/python3.6/site-packages/django/db/backends/sqlite3/base.py" in execute
> 383. return Database.Cursor.execute(self, query, params)
>
>The above exception (FOREIGN KEY constraint failed) was the direct >cause of the following exception:
>
>File "/home/ray/Dev/rxvenv/lib/python3.6/site-packages/django/core/handlers/exception.py" in inner
> 34. response = get_response(request)
>
>File "/home/ray/Dev/rxvenv/lib/python3.6/site-packages/django/core/handlers/base.py" in _get_response
> 115. response = >self.process_exception_by_middleware(e, request)
>
>File "/home/ray/Dev/rxvenv/lib/python3.6/site-packages/django/core/handlers/base.py" in _get_response
> 113. response = wrapped_callback(request, >*callback_args, **callback_kwargs)
>
>File "/home/ray/Dev/rxvenv/lib/python3.6/site-packages/django/contrib/admin/options.py" in wrapper
> 606. return self.admin_site.admin_view(view)(*args, >**kwargs)
>
>File "/home/ray/Dev/rxvenv/lib/python3.6/site-packages/django/utils/decorators.py" in _wrapped_view
> 142. response = view_func(request, *args, >**kwargs)
>
>File "/home/ray/Dev/rxvenv/lib/python3.6/site-packages/django/views/decorators/cache.py" in _wrapped_view_func
> 44. response = view_func(request, *args, **kwargs)
>
>File "/home/ray/Dev/rxvenv/lib/python3.6/site-packages/django/contrib/admin/sites.py" in inner
> 223. return view(request, *args, **kwargs)
>
>File "/home/ray/Dev/rxvenv/lib/python3.6/site-packages/django/utils/decorators.py" in _wrapper
> 45. return bound_method(*args, **kwargs)
>
>File "/home/ray/Dev/rxvenv/lib/python3.6/site-packages/django/utils/decorators.py" in _wrapped_view
> 142. response = view_func(request, *args, >**kwargs)
>
>File "/home/ray/Dev/rxvenv/lib/python3.6/site-packages/django/contrib/admin/options.py" in changelist_view
> 1727. response = self.response_action(request, >queryset=cl.get_queryset(request))
>
>File "/home/ray/Dev/rxvenv/lib/python3.6/site-packages/django/contrib/admin/options.py" in response_action
> 1397. response = func(self, request, queryset)
>
>File "/home/ray/Dev/rxvenv/lib/python3.6/site-packages/django/contrib/admin/actions.py" in delete_selected
> 40. modeladmin.delete_queryset(request, queryset)
>
>File "/home/ray/Dev/rxvenv/lib/python3.6/site-packages/django/contrib/admin/options.py" in delete_queryset
> 1098. queryset.delete()
>
>File "/home/ray/Dev/rxvenv/lib/python3.6/site-packages/django/db/models/query.py" in delete
> 711. deleted, _rows_count = collector.delete()
>
>File "/home/ray/Dev/rxvenv/lib/python3.6/site-packages/django/db/models/deletion.py" in delete
> 312. count = query.delete_batch(pk_list, self.using)
>
>File "/home/ray/Dev/rxvenv/lib/python3.6/site-packages/django/db/models/sql/subqueries.py" in delete_batch
> 41. num_deleted += >self.do_query(self.get_meta().db_table, self.where, using=using)
>
>File "/home/ray/Dev/rxvenv/lib/python3.6/site-packages/django/db/models/sql/subqueries.py" in do_query
> 24. cursor = self.get_compiler(using).execute_sql(CURSOR)
>
>File "/home/ray/Dev/rxvenv/lib/python3.6/site-packages/django/db/models/sql/compiler.py" in execute_sql
> 1140. cursor.execute(sql, params)
>
>File "/home/ray/Dev/rxvenv/lib/python3.6/site-packages/django/db/backends/utils.py" in execute
> 99. return super().execute(sql, params)
>
>File "/home/ray/Dev/rxvenv/lib/python3.6/site-packages/django/db/backends/utils.py" in execute
> 67. return self._execute_with_wrappers(sql, params, >many=False, executor=self._execute)
>
>File "/home/ray/Dev/rxvenv/lib/python3.6/site-packages/django/db/backends/utils.py" in _execute_with_wrappers
> 76. return executor(sql, params, many, context)
>
>File "/home/ray/Dev/rxvenv/lib/python3.6/site-packages/django/db/backends/utils.py" in _execute
> 84. return self.cursor.execute(sql, params)
>
>File "/home/ray/Dev/rxvenv/lib/python3.6/site-packages/django/db/utils.py" in __exit__
> 89. raise dj_exc_value.with_traceback(traceback) from >exc_value
>
>File "/home/ray/Dev/rxvenv/lib/python3.6/site-packages/django/db/backends/utils.py" in _execute
> 84. return self.cursor.execute(sql, params)
>
>File "/home/ray/Dev/rxvenv/lib/python3.6/site-packages/django/db/backends/sqlite3/base.py" in execute
> 383. return Database.Cursor.execute(self, query, params)
>
>Exception Type: IntegrityError at /admin/accounts/user/
>Exception Value: FOREIGN KEY constraint failed
>