php - ZF2 Dependency Injection onto Controller objects without the Service Locator -

i have been doing read on zf2 service locator component , understand how being used. have, however, question think silly wouldn't hurt ask.

i want have namespace inside module called component can put generic code in functionscomponent.php, mailercomponent.php or excelcomponent.php. allow me stuff inside controllers.

what tryout have ability have controllers define components interested use (see below):

class salescontroller extends abstractcontroller {   protected $components = ['excel'];    //in action   public function exportaction()   {     $data = ['data exported'];     /**       $data : data exported       boolean : whether force download or save file in dedicated location     */     $this->excel->export($data, true);   } } 

the idea create componentcollection perhaps implements factoryinterface or servicelocatorinterface , let check each controller when mvcevent has been triggered inside module class , have componentcollection inject controller component , make them accessible without using service locator shown below:

$excel = $sm->get('application\component\excel'); 

i aware may seem daunting ask feel best way learn framework among other things play around , try unimaginable.

you should create basecontroller somewhere , extend controllers basecontroller. can inject dependencies in basecontroller , use anywhere in kids. example, doing in controller set head title:

<?php  namespace application\controller;  use zend\mvc\controller\abstractactioncontroller;  class basecontroller extends abstractactioncontroller {      /**      * sets head title every page      *      * @param string $title      */     public function setheadtitle($title)     {         $viewhelpermanager = $this->getservicelocator()->get('viewhelpermanager');         // getting headtitle helper view helper manager         $headtitlehelper = $viewhelpermanager->get('headtitle');          // setting separator string segments         $headtitlehelper->setseparator(' - ');          // setting action, controller, module , site name title segments         $sitename = 'ribbon cutters';         $translator = $this->getservicelocator()->get('translator');         $title = $translator->translate($title);         $headtitlehelper->append(ucfirst($title));         $headtitlehelper->append($sitename);     }  } 

instead of defining methods, can define properties.

public $headtitlehelper 

and assign in constructor of basecontroller

$this->headtitlehelper = $this->getservicelocator()->get('viewhelpermanager')->get('headtitle'); 

now can use $this->headtitlehelper in child controllers.

and then

<?php  namespace application\controller;  use zend\view\model\viewmodel; use application\controller\basecontroller;  class indexcontroller extends basecontroller {      /**      * property setting entity manager of doctrine      */     protected $em;      /**      * landing page      *      * @return viewmodel      */     public function indexaction()     {          $this->setheadtitle('welcome');  // welcome - ribbon cutters          $viewmodel = new viewmodel();          return $viewmodel;     }        /**      * sets , gives doctrine entity manager      *      * @return doctrine entity manager      */     protected function getentitymanager()     {         if (null === $this->em) {             $this->em = $this->getservicelocator()->get('doctrine.entitymanager.orm_default');         }         return $this->em;     } } 

i think can you.