zend framework2 - Class not recognized by initializer -

i'm pretty new zf2 setup site working it. got understanding of servicemanager i'm stuck.

here context : want implement logger available on class of zf2 application.

in global.php create factory logger :

'service_manager' => array(     'factories' => array(         'zend\db\adapter\adapter'                 => 'zend\db\adapter\adapterservicefactory',         'zend\log\logger' => function($sm){             $logger = new zend\log\logger;             $writer = new zend\log\writer\stream('./data/log/'.date('y-m-d').'-error.log','wb');              $logger->addwriter($writer);                  return $logger;         },     ), 

now want have injected in every class implementing loggerawareinterface. in module.php have initializer in getserviceconfig function

        'initializers' => array(                 'logger' => function($service, $sm) {                     if ($class instanceof loggerawareinterface) {                         $logger = $sm->get('zend\log\logger');                         $class->setlogger($logger);                     }                 }         ), 

example given, want inject in class named partcontroller, set invokable in module.config.php

return array(     'controllers' => array(         'invokables' => array(             'part\controller\part' => 'part\controller\partcontroller',         ),     ), 

this class implementing loggerawareinterface

class partcontroller extends abstractactioncontroller implements loggerawareinterface 

the issue have logger not initialized in partcontroller, checked var_dump in partcontroller.

i tried dump services checked initializer, , partcontroller doesn't appear ...

what doing wrong ? , why partcontroller not registered in servicemanager although in invokables section of module.config.php ?

thanks in advance everyone.

if want initializer apply controller, need tell controllermanager it, can implementing getcontrollerconfig method defined zend\modulemanager\feature\controllerproviderinterface, ie.,

<?php // ..some namespace  use zend\modulemanager\feature\controllerproviderinterface;  class module implements controllerproviderinterface {     // ..       public function getcontrollerconfig()     {         return array(             'initializers' => array(                 'loggerawareinitializer' => function($instance, $sm) {                     if ($instance instanceof loggerawareinterface) {                         $logger = $sm->getservicelocator()->get('zend\log\logger');                         $instance->setlogger($logger);                     }                 },             ),         );     }  }