Django在“完全加载”之后如何运行任意代码 [英] How To Run Arbitrary Code After Django is "Fully Loaded"

问题描述

我需要在Django环境完全加载后执行一些相当简单的任务。

更具体地说，我需要做一些例如 Signal.disconnect（）一些由我的第三方库默认设置的Django信号， connect 我自己的信号，我需要做一些猴子补丁，从另一个图书馆向一些Django模型添加便利功能。

我已经在我的Django应用程序的 __ init __。py 文件中执行此操作，这似乎可以适用于猴子修补，但不适用于我的信号断开连接。这个问题似乎是一个时间 - 无论什么原因，第三方图书馆在尝试之后总是似乎称之为 Signal.connect（） Signal.disconnect（）它。

所以两个问题：

根据我的 INSTALLED_APPS 订单的任何保证，当我的应用程序的 __ init __。py 模块加载时的顺序？ / p>

是否有适当的地方放置需要在 后运行 的逻辑Django应用程序已经完全加载到内存中？

解决方案

在Django 1.7应用程序可以实现ready（）方法： https://docs.djangoproject.com/en/dev/ref/applications/#django.apps.AppConfig。准备好

I need to perform some fairly simple tasks after my Django environment has been "fully loaded".

More specifically I need to do things like Signal.disconnect() some Django Signals that are setup by my third party library by default and connect my own Signals and I need to do some "monkey patching" to add convenience functions to some Django models from another library.

I've been doing this stuff in my Django app's __init__.py file, which seems to work fine for the monkey patching, but doesn't work for my Signal disconnecting. The problem appears to be one of timing--for whatever reason the Third Party Library always seems to call its Signal.connect() after I try to Signal.disconnect() it.

So two questions:

Do I have any guarantee based on the order of my INSTALLED_APPS the order of when my app's __init__.py module is loaded?

Is there a proper place to put logic that needs to run after Django apps have been fully loaded into memory?

解决方案

In Django 1.7 Apps can implement the ready() method: https://docs.djangoproject.com/en/dev/ref/applications/#django.apps.AppConfig.ready

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