如何在Django中自动填充和显示来自用户模型字段的数据到来自不同应用程序的另一个模型？

from django.contrib.auth.models import User

class MyModel(models.Model):
    user = models.ForeignKey(User, on_delete=models.CASCADE)
    # 其他字段...

from django.db.models.signals import pre_save
from django.dispatch import receiver

@receiver(pre_save, sender=MyModel)
def populate_user_data(sender, instance, **kwargs):
    if not instance.user:
        # 如果实例没有关联的用户，则获取当前请求的用户
        user = instance.request.user
        instance.user = user

from django.apps import AppConfig

class MyAppConfig(AppConfig):
    default_auto_field = 'django.db.models.BigAutoField'
    name = 'myapp'

    def ready(self):
        import myapp.signals  # 导入信号接收器模块