Catchable Fatal Error in form event subscriber using Symfony 2.3 -

after updating symfony 2.3 2.1, there strange message when trying create form :

catchable fatal error: argument 1 passed msgr\profilebundle\form\eventlistener\addnamefieldsubscriber::presetdata() must instance of symfony\component\form\event\dataevent, instance of symfony\component\form\formevent given in /xxxxxx/aaas/src/msgr/profilebundle/form/eventlistener/addnamefieldsubscriber.php line 29

these usual suspects :

profiletype.php

    <?php  namespace aaas\profilebundle\form;  use doctrine\orm\entityrepository;  use symfony\component\form\formfactoryinterface; use symfony\component\form\abstracttype; use symfony\component\form\formbuilderinterface; use symfony\component\optionsresolver\optionsresolverinterface; use aaas\profilebundle\form\eventlistener\addnamefieldsubscriber;   class profiletype extends abstracttype {     public function buildform(formbuilderinterface $builder, array $options)     {         $subscriber = new addnamefieldsubscriber($builder->getformfactory());         $builder->addeventsubscriber($subscriber);         $builder             ->add('firstname')             ->add('lastname')             ->add('city')             ->add('country')             ->add('mobile')             ->add('description')             ->add('avatarfile')             ->add('website')             ->add('facebook')             ->add('twitter')             ->add('googleplus')             ->add('gender', 'choice', array(                 'choices'   => array('m' => 'man', 'f' => 'female'),                 'required'  => true,                 'empty_value' => 'choose gender',             ))             ;             }      //public function getparent()     //{     //    return 'form';     //}      public function setdefaultoptions(optionsresolverinterface $resolver)     {         $resolver->setdefaults(array(             'data_class' => 'aaas\profilebundle\entity\profile'         ));     }      public function getname()     {         return 'profile';     } } 

addnamefieldsubscriber.php

<?php // src/acme/demobundle/form/eventlistener/addnamefieldsubscriber.php namespace aaas\profilebundle\form\eventlistener;   use symfony\component\form\formfactoryinterface; use doctrine\orm\entitymanager; use symfony\component\eventdispatcher\eventsubscriberinterface; use symfony\component\form\formevents; use symfony\component\form\event\dataevent;   class addnamefieldsubscriber implements eventsubscriberinterface {     private $factory;      public function __construct(formfactoryinterface $factory)     {         $this->factory = $factory;     }      public static function getsubscribedevents()     {         // tells dispatcher want listen on form.pre_set_data         // event , presetdata method should called.         return array(formevents::pre_set_data => 'presetdata');     }      public function presetdata(dataevent $event)     {         //$data = $event->getdata();         $form = $event->getform();          // during form creation setdata() called null argument         // formbuilder constructor. we're concerned when         // setdata called actual entity object in (whether new,         // or fetched doctrine). if statement let's skip right         // on null condition.         if (null === $data) {             return;         }          // check if product object "new"          if (!$data->getid()) {             $form->add($this->factory->createnamed('username','text', array(                                                    'auto_initialize' => false                                                     )));             $form->add($this->factory->createnamed('password','password'));             $form->add($this->factory->createnamed('email','email'));             $form->add($this->factory->createnamed('groups', 'entity',null, array(                                                    'multiple' => false,                                                    'class' => 'aaasprofilebundle:group',                                                    'query_builder' => function(entityrepository $er) {                                                                          return $er->createquerybuilder('g')                                                                                      ->where('g.id != 1')                                                                                      ->andwhere('g.id != 2')                                                                                      ->andwhere('g.id != 3');                                                       }                                                   )));         }      } } 

unfortunately, cannot find root cause of problem !

your class addnamefieldsubscriber has method public function presetdata(dataevent $event) should instead typehinting formevent. form component changed event object dispatched between 2.1 , 2.3:

<?php // src/acme/demobundle/form/eventlistener/addnamefieldsubscriber.php namespace aaas\profilebundle\form\eventlistener;   use symfony\component\form\formfactoryinterface; use doctrine\orm\entitymanager; use symfony\component\eventdispatcher\eventsubscriberinterface; use symfony\component\form\formevents; use symfony\component\form\formevent;   class addnamefieldsubscriber implements eventsubscriberinterface {     private $factory;      public function __construct(formfactoryinterface $factory)     {         $this->factory = $factory;     }      public static function getsubscribedevents()     {         // tells dispatcher want listen on form.pre_set_data         // event , presetdata method should called.         return array(formevents::pre_set_data => 'presetdata');     }      public function presetdata(formevent $event)     {         //$data = $event->getdata();         $form = $event->getform();          // during form creation setdata() called null argument         // formbuilder constructor. we're concerned when         // setdata called actual entity object in (whether new,         // or fetched doctrine). if statement let's skip right         // on null condition.         if (null === $data) {             return;         }          // check if product object "new"          if (!$data->getid()) {             $form->add($this->factory->createnamed('username','text'));             $form->add($this->factory->createnamed('password','password'));             $form->add($this->factory->createnamed('email','email'));             $form->add($this->factory->createnamed('groups', 'entity',null, array(                                                    'multiple' => false,                                                    'class' => 'aaasprofilebundle:group',                                                    'query_builder' => function(entityrepository $er) {                                                                          return $er->createquerybuilder('g')                                                                                      ->where('g.id != 1')                                                                                      ->andwhere('g.id != 2')                                                                                      ->andwhere('g.id != 3');                                                       }                                                   )));         }      } }