Module: ActionController::Flash::ClassMethods

Relationships & Source Files
Defined in:	actionpack/lib/action_controller/metal/flash.rb

Instance Method Summary

#add_flash_types(*types)

Creates new flash types.
#action_methods Internal use only

Instance Method Details

#action_methods

This method is for internal use only.

[ GitHub ]

# File 'actionpack/lib/action_controller/metal/flash.rb', line 47


def action_methods # :nodoc:
  @action_methods ||= super - _flash_types.map(&:to_s).to_set
end

#add_flash_types(*types)

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.

[ GitHub ]

# File 'actionpack/lib/action_controller/metal/flash.rb', line 34


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) if respond_to?(:helper_method)

    self._flash_types += [type]
  end
end