listener - How to add a calculated field in the FormEvents::PRE_SUBMIT Event -

in listener need access entity when in formevents::pre_submit event. in post_set_data no problem, use $event->getdata();.

so event listening post_set_data fine code:

public function postsetdata(formevent $event) {     $form = $event->getform();     $day = $event->getdata();     $total = $this->daymanager->calculatetotal($day); // passing day object, yay!      $form->get('total')->setdata($total); } 

however in method pre_submit event.

i need function because on submitting, total not calculated newly submitted data.

public function presubmit(formevent $event) {     $form = $event->getform();      // $day = $event->getdata();     // raw array because $event->getdata(); holds old not updated day object     $day = $form->getdata();       // ough! had create , call seperate function on daymanager handles raw event array     $total = $this->daymanager->calculatetotalfromarray($event->getdata());      // modify event data     $data = $event->getdata();      // ough(2)! have nasty things match raw event array notation     $totalarray = array(         'hour' => $total->format('g') . "",         'minute' => intval($total->format('i')) . ""     );     $data['total'] = $totalarray;     $event->setdata($data); } 

as can see, works. such hackish way, not believe pro's way. 2 things go wrong here:

• cannot work entity day object in presubmit function
• have create calculatetotalfromarray function in daymanager
• ugly code match raw event array in presubmit function

so main question: how updated day object form in pre_submit form event.

use submit instead of pre_submit

don't worry, form not yet submitted, submit executed right before form::submit

why having problem?

all data in pre_submit has not been normalized usual object...

if you'd learn more whole thing, please head to: http://symfony.com/doc/current/components/form/form_events.html