module ActionController::Flash::ClassMethods - actionpack-4.2.4 Documentation

# module ActionController::Flash::ClassMethods

### Public Instance Methods

add_flash_types(*types) click to toggle source

Creates new flash types. You can pass as many types as you want to create flash types other than the default `alert` and `notice` in your controllers and views. For instance:

    # in application_controller.rb
    class ApplicationController < ActionController::Base
      add_flash_types :warning
    end

    # in your controller
    redirect_to user_path(@user), warning: "Incomplete profile"

    # in your view
    <%= warning %>

This method will automatically define a new method for each of the given names, and it will be available in your views.

    # File lib/action_controller/metal/flash.rb, line 31
    def add_flash_types(*types)
      types.each do |type|
        next if _flash_types.include?(type)

        define_method(type) do
          request.flash[type]
        end
        helper_method type

        self._flash_types += [type]
      end
    end