Renamed Callbacks in Rails 4

Action callbacks in controllers have been renamed from *_filter to *_action.
For example:

class UsersController < ApplicationController

  before_action :set_user, :except => [:index, :new, :create}

  before_action :require_the_president, :only => [:fire_the_missiles]

 

  private

 

  def set_user

    @user = somehow_find_and_set_the_user(params[:id])

  end

 

  def require_the_president

    @user.is_the_president?

  end

end 

The old *_filter callbacks still work and are not deprecated; so, you can still use them if you wish.