我们可以在apps.py中使用post_save信号吗?

那里 我正在使用django-python。 我有自定义的用户模型。我已经创建了一个单独的django信号文件。这是我的方法。 我正在我的apps.py中导入它们,并想在那里使用。 因为,迁移后的信号是这样工作的。但post_save是取模的不同原因。而postmigrate则使用app-name。 您可以更好地理解以下代码。

信号.py

import secrets
from django.core.mail import send_mail
def create_first_account(sender, **kwargs):
    if sender.name == 'accounts':
        user = User.objects.get_user_by_username("meidan")
        if user:
            return None
        password = secrets.token_hex(4)
        user = User.objects.create(
            username="meidan",
            email="[email protected]",
            password=password 
        )
        user.is_active= True
        User.objects.save_me(user)
        subject = 'Meidan Account'
        message = password
        from_email = settings.EMAIL_HOST_USER
        recipient_list = ['[email protected]']
        send_mail(subject, message, from_email, recipient_list, fail_silently=False)



def create_first_account(sender,created, **kwargs):
    if sender.name == 'accounts':
        print(created)

apps.py

from django.apps import AppConfig
from django.db.models.signals import post_migrate,post_save
from django.contrib.auth import get_user_model

User = get_user_model()
class AccountsConfig(AppConfig):
    default_auto_field = 'django.db.models.BigAutoField'
    name = 'accounts'

    def ready(self):
        from accounts.signals import generate_banks,create_first_account,create_first_account
        post_migrate.connect(generate_banks, sender=self)
        post_migrate.connect(create_first_account, sender=self)
        post_save.connect(create_first_account,sender=User)

现在出现错误。

  File "/home/aa/playapp-backend/envMy/lib/python3.10/site-packages/django/apps/registry.py", line 201, in get_model
    self.check_apps_ready()
  File "/home/aa/playapp-backend/envMy/lib/python3.10/site-packages/django/apps/registry.py", line 136, in check_apps_ready
    raise AppRegistryNotReady("Apps aren't loaded yet.")
django.core.exceptions.AppRegistryNotReady: Apps aren't loaded yet.