Rails: call another controller action from a controller

To use one controller from another, do this:

def action_that_calls_one_from_another_controller
  controller_you_want = ControllerYouWant.new
  controller_you_want.request = request
  controller_you_want.response = response
  controller_you_want.action_you_want
end

You can use a redirect to that action :

redirect_to your_controller_action_url

More on : Rails Guide

To just render the new action :

redirect_to your_controller_action_url and return