Lazy-load ActionMailer::Base to defer :action_mailer on_load hook #89
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nashby
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Feb 18, 2014
Lazy-load ActionMailer::Base to defer :action_mailer on_load hook
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Bundling current version of letter_opener immediately loads ActionMailer::Base when the gem is required, and thus triggers its whole initialization scripts (and then ActionMailer loads ActionView here) even in situations that ActionMailer or ActionView are not actually needed (e.g. booting up the Rails console, executing a model test, running a Rake task, etc.).
Here's a fix to lazy-load AM::Base via ActiveSupport.on_load hook so that AM::Base is loaded when actually referenced from the application.