Custom method not found when extending Sonata's PageAdmin

Question

We have used Easy Extends to extend Sonata's Page Admin. So I now have a class that looks like this:

class PageAdmin extends BasePageAdmin
{
    public function configureRoutes(RouteCollection $collection)
    {
        parent::configureRoutes($collection);

        $collection->add( 'send_page_emails', '/admin/send-page-emails');
    }
    ...
}

... and my custom PageAdminController class includes the following function:

protected function sendPageEmailsAction()
{
    die('Here I am!');
}

The problem comes when I try to redirect to my new action. I get the following:

Call to undefined method Sonata\AdminBundle\Controller\CRUDController::sendPageEmailsAction

How can I get the application to look in the correct place for my action?

===

Edit: Here are the relevant parts of admin.yml.

sonata.page.admin.page:
    class: Application\Sonata\PageBundle\Admin\PageAdmin
    arguments: [~, '%sonata.page.admin.page.entity%', SonataPageBundle:PageAdmin]
    tags:
        - { name: sonata.admin, manager_type: orm, group: admin, label: Seiten }
    calls:
        - [ addChild, ['@sonata.page.admin.block']]
        - [ addChild, ['@sonata.page.admin.snapshot']]
        - [ setPageManager, ['@sonata.page.manager.page']]
        - [ setCacheManager, ['@sonata.cache.manager']]
        - [ setSiteManager, ['@sonata.page.manager.site']]
        - [ setTranslationDomain, ['SonataPageBundle']]
        - [ setTemplate, ['edit', 'ApplicationSonataPageBundle:PageAdmin:edit_duplicate.html.twig']]
        - [ setTemplate, ['tree', 'SonataPageBundle:PageAdmin:tree.html.twig']]
        - [ setTemplate, ['compose', 'ApplicationSonataPageBundle:PageAdmin:compose.html.twig']]
        - [ setTemplate, ['create', 'SonataAdminBundle:CRUD:edit.html.twig']]
        - [ setTemplate, ['select_site', 'SonataPageBundle:PageAdmin:select_site.html.twig']]
        - [ setTemplate, ['list', 'SonataPageBundle:PageAdmin:list.html.twig']]
        - [ setTemplate, ['compose_container_show', 'SonataPageBundle:PageAdmin:compose_container_show.html.twig']]

Answer 1

In the admin controller action method should be public and not protected, otherwise Sonata will not be able to find the method for your action :

<?php

namespace Application\Sonata\PageBundle\Controller;

use Sonata\AdminBundle\Controller\CRUDController;

class PageAdminController extends CRUDController
{
   public function sendPageEmailsAction()
   {
       // your code here
   }
}