ActiveRecord回调列表 [英] ActiveRecord Callbacks List

问题描述

我一直在浏览rails源一段时间，我不认为有更好的方法获取所有回调的列表除了： ActiveRecord :: Callbacks :: CALLBACKS - 这是一个常数列表。

I've been going through the rails source for a while now, and I don't think there's a better way of getting the list of all callbacks other than: ActiveRecord::Callbacks::CALLBACKS – which is a constant list.

意味着如果你使用像devise_invitable这样的gem，回调称为：invitation_accepted ，分数：和：之前然后 ActiveRecord :: Callbacks :: CALLBACKS 将无法工作。

Meaning if you're using a gem like devise_invitable that adds a new callback called :invitation_accepted with the score :after and :before then ActiveRecord::Callbacks::CALLBACKS will not work.

你知道一个简单的修复，其他

Do you know of an easy fix, other than opening up rails modules and making sure there's an internal list of call-backs per model class?

推荐答案

您可以调用 Model._save_callbacks 以获取保存时的所有回调的列表。
然后你可以过滤它到什么你需要什么。 ：之前或：之后如下：

You can call Model._save_callbacks to get a list of all callbacks on save. You can then filter it down to what kind you need e.g. :before or :after like this:

Model._save_callbacks.select {|cb| cb.kind == :before}

使用 Model._destroy_callbacks 等。

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