自创建对象24小时后如何删除对象 [英] How to delete an object after 24hrs since creation of the same

问题描述

自创建该实例以来，我想在24小时后删除该实例

I want to delete an instance after 24 hours since that instance has been created how to do that with celery

创建后如何启动计时器实例？

How can i start the "TIMER" after the creation of an instance?

我想要Snapchat

I want something like Snapchat

推荐答案

您将不得不使用django-celery-beat来执行定期任务：
http://docs.celeryproject.org/en/latest/userguide/periodic-tasks。 html＃beat-custom-schedulers

You will have to use django-celery-beat for periodical tasks: http://docs.celeryproject.org/en/latest/userguide/periodic-tasks.html#beat-custom-schedulers

老实说，我会创建一个每3-5分钟运行一次的芹菜任务。

I would honestly create a celery task that would run every 3-5 minutes.

models.py

   class Foo(models.model):
       created_at = models.DateTimeField(auto_add_now=True)
       expiration_date = models.DateTimeField()

views.py

import datetime
from django.utils import timezone

def add_foo():
    # Create an instance of foo with expiration date now + one day
    Foo.objects.create(expiration_date=timezone.now() + datetime.timedelta(days=1))

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 foos in our database
    foos = Foo.objects.all()

    # Iterate through them
    for foo in foos:

        # If the expiration date is bigger than now delete it
        if foo.expiration_date < timezone.now():
            foo.delete()
            # log deletion
    return "completed deleting foos at {}".format(timezone.now())

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