Django 每次重启时如何调用一个函数？

Question

我有一个在生产环境中使用 Gunicorn 托管的 Django 网络服务。每次重新启动 web 服务时，我都需要调用函数 restart_event。这是函数的伪代码

def restart_event():
    """This function should be called everytime Django restarts"""

    # read list of registered companies from the database
    companies = Company.objects.all()

    for company in companies:
        # perform various operations on the data
        business_logic1(company)
        business_logic2(company)
        change_celery_settings()

如何配置Django使得每次Django重启时调用上述函数？请注意，由于正在使用 Gunicorn，因此我不会执行 python manage.py runserver 而我将启动和停止 Gunicorn 网络服务器

Answer 1

如果您想在每次 Django 启动时调用代码，您可以在应用程序配置中覆盖它的 ready 函数来实现。例如

class FooConfig(AppConfig):
    def ready(self):
        # read list of registered companies from the database
        companies = Company.objects.all()

        for company in companies:
            # perform various operations on the data
            business_logic1(company)
            business_logic2(company)
            change_celery_settings()

可以找到关于此的更多信息over in the Django docs

Django 每次重启时如何调用一个函数？

How to call a function every time Django restarts?

python

django

celery

gunicorn

wsgi