不推荐使用警告:初始化已自动加载常量ActionText::ContentHelper和ActionText::TagHelper

Question

我正在尝试理解弃用警告：

DEPRECATION WARNING: Initialization autoloaded the constants 
ActionText::ContentHelper and ActionText::TagHelper.

Being able to do this is deprecated. Autoloading during initialization is 
going
to be an error condition in future versions of Rails.

Reloading does not reboot the application, and therefore code executed during
initialization does not run again. So, if you reload 
ActionText::ContentHelper, for example,
the expected changes won't be reflected in that stale Module object.

These autoloaded constants have been unloaded.

In order to autoload safely at boot time, please wrap your code in a reloader
callback this way:

Rails.application.reloader.to_prepare do
  # Autoload classes and modules needed at boot time here.
end

That block runs when the application boots, and every time there is a reload.
For historical reasons, it may run twice, so it has to be idempotent.

Check the "Autoloading and Reloading Constants" guide to learn more about how
Rails autoloads and reloads.
 (called from <top (required)> at 
/home/keith/development/pciapp/config/environment.rb:5)

此弃用警告是什么意思?我如何解决它？

Answer 1

一些调查发现，我的Rails 6.1应用程序中有两个不推荐使用该警告的来源。

我在几个初始化器中引用了

1. ：：Base。根据environment.rb.

指南(https://guides.rubyonrails.org/action_mailer_basics.html#action-mailer-configuration)中的建议，我决定将所有这些引用都转移到Rails

1. 同样的弃用错误显然也是由mailgun-ruby gem v1.2.3生成的。V1.2.4中似乎已修复弃用警告。

Answer 2

这是rails 6.0.0中的一个问题，https://github.com/rails/rails/issues/36546更新到rails 6.0.1应该会解决这个问题