在 Django 中删除用户几天后删除用户的文件

Question

在我的 Django 应用程序中，当用户删除其帐户后，我想在 4-5 天后删除用户的媒体文件（他们的个人资料图片和其他图像）。


def delete_files(sender, instance, **kwargs):
    path = str(os.getcwd())
    try:
        pathdl = f"{path}\data\media\{instance.username}"
        shutil.rmtree(pathdl)
    except Exception:
        print(Exception)


post_delete.connect(delete_files, sender=User)

我用post_delete删除了用户的文件，但是4-5天或某个时间段后如何删除文件。

Answer 1

周期性任务最好使用django-celery-beat： http://docs.celeryproject.org/en/latest/userguide/periodic-tasks.html#beat-custom-schedulers

以此为例

将此视为您的用户 models.py。您在这里需要的是一个过期字段，cronjob 在删除它之前会检查它。

models.py

   class Foo(models.model):
       UserId= models.CharField(max_length=40, unique=True) #user pk here
       expiration_date = models.DateTimeField() # you would set the time here

views.py

import datetime
from django.utils import timezone

def add_foo(instance):
    # Create an instance of foo with expiration date now + one day
    objects.create(expiration_date=timezone.now() + datetime.timedelta(days=1))
        path = str(os.getcwd())
    try:
        pathdl = f"{path}\data\media\{instance.username}"
        shutil.rmtree(pathdl)
        User.objects.create(expiration_date=timezone.now() + datetime.timedelta(days=1))
    except Exception:
        print(Exception)
post_delete.connect(delete_files, sender=User)

tasks.py

from celery.schedules import crontab
from celery.task import periodic_task
from django.utils import timezone

@periodic_task(run_every=crontab(minute='*/5'))
def delete_old_foos():
    # Query all the expired date in our database
    userMedia = Users.objects.all()
    #Or get a specific user id to delete their file
    # Iterate through them
    for file in userMedia :
    
        # If the expiration date is bigger than now delete it
        if file.expiration_date < timezone.now():
            file.delete()
            # log deletion
    return "completed deleting file at {}".format(timezone.now())

您当然也可以将这个想法融入到您想要解决这个问题的任何方式中。

在 Django 中删除用户几天后删除用户的文件

Delete a user's file after some days after the user is deleted in Django

python

django

django-signals

django-models

django-admin