railties/lib/rails/engine/updater.rb


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require "rails/generators"
require "rails/generators/rails/plugin/plugin_generator"

module Rails
  class Engine
    class Updater
      class << self
        def generator
          @generator ||= Rails::Generators::PluginGenerator.new ["plugin"],
            { engine: true }, destination_root: ENGINE_ROOT
        end

        def run(action)
          generator.send(action)
        end
      end
    end
  end
end