class Erb::Generators::MailerGenerator

def copy_view_files
  view_base_path = File.join("app/views", class_path, file_name + "_mailer")
  empty_directory view_base_path
  if behavior == :invoke
    formats.each do |format|
      layout_path = File.join("app/views/layouts", class_path, filename_with_extensions("mailer", format))
      template filename_with_extensions(:layout, format), layout_path unless File.exist?(layout_path)
    end
  end
  actions.each do |action|
    @action = action
    formats.each do |format|
      @path = File.join(view_base_path, filename_with_extensions(action, format))
      template filename_with_extensions(:view, format), @path
    end
  end
end

def file_name
  @_file_name ||= super.sub(/_mailer\z/i, "")
end

def formats
  [:text, :html]
end