Custom Flash Types In Rails 4

This small feature may help clean up some code. You can register your own flash types to use in redirect_to calls and in templates. For example:

# app/controllers/application_controller.rb

class ApplicationController

  add_flash_types :error, :catastrophe

end

 

# app/controllers/things_controller.rb

class ThingsController < ApplicationController

  def create

    # ... create a thing

  rescue Error => e

    redirect_to some_path, :error => e.message

  rescue Catastrophe => e

    redirect_to another_path, :catastrophe => e.message

  end

end

 

# app/views/layouts/application.html.erb

<div class="error"><%= error %></div>

<div class="catastrophe"><%= catastrophe %></div>