Why Railtie initializers are not executed?

问题

While crafting the Passenger-Monit plugin, I thought that it'll be most appropriate to use the initializer, i.e.

module PassengerMonit
  class Railtie < Rails::Railtie
    initializer "my_plugin.some_init_task" do
      # my initialization tasks
    end
  end
end

However, for some reason the code in the block was never executed. I finally made a work-around with

config.before_initialize {}

but I'm curious, why the initializer wasn't executed. What could have prevented it from running?

回答1:

In your gemfile, did you add

gem "Passenger-Monit"

Otherwise you need to put it in your load path and require it in your application. http://www.igvita.com/2010/08/04/rails-3-internals-railtie-creating-plugins/

Good luck!

来源：https://stackoverflow.com/questions/5856614/why-railtie-initializers-are-not-executed