创建一个 post_save 信号，为我创建一个配置文件对象

Question

下午好，我的用户模型中有以下信号，但在创建用户时它没有创建配置文件对象，这是我做错的。  def create_profile(sender, instance, created, **kwargs):    if created:        Profile.objects.create(user=instance)def save_profile(sender, instance, **kwargs):    instance.create_profile.save()post_save.connect(create_profile, sender=User)post_save.connect(save_profile, sender=User)

Answer 1

创建一个 signal.py 文件，然后在其中添加以下代码：

from django.contrib.auth.models import User

from django.db.models.signals import post_save

from django.dispatch import receiver

from .models import Profile

@receiver(post_save, sender=User)

def create_profile(sender, instance, created, **kwargs):

    if created:

        Profile.objects.create(user=instance)

@receiver(post_save, sender=User)

def save_profile(sender, instance, **kwargs):

    instance.profile.save()

然后在您的用户 apps.py 中添加以下代码：

class UsersConfig(AppConfig):

name = 'users'

    def ready(self):

        import users.signals

那么你就完成了！

Answer 2

假设您有一个名为“profiles”的应用程序profiles/signals.py

from django.contrib.auth.models import User

from django.db.models.signals import post_save

from django.dispatch import receiver

from profiles.models import Profile

@receiver(post_save, sender=User)

def create_user_profile(sender, instance, created, **kwargs):

    if created:

        Profile.objects.create(user=instance)

@receiver(post_save, sender=User)

def save_user_profile(sender, instance, **kwargs):

    instance.profile.save()

在profiles/app.py

from django.apps import AppConfig

from django.utils.translation import ugettext_lazy as _

class ProfilesConfig(AppConfig):

    name = 'cmdbox.profiles'

    verbose_name = _('profiles')

    def ready(self):

        import cmdbox.profiles.signals  # noqa

终于在profiles/__init__.py

default_app_config = 'profiles.apps.ProfilesConfig'