Symfony2 : How to change hidden field value on PRE_SUBMIT

Question

This is how the hidden value is added in the $formBuilder :

->add('depth', 'hidden', array('mapped'=>false, 'data' => 1))

I have a function that is fired ON_PRE_SUBMIT, at the line below I assumed this field's value would change but that is not the case.

$form->get('depth')->setData($depth++); //$depth = $form->get('depth')->getData();

I have also tried to do as shown here :

$data = $event->getData();
$data['depth'] = $depth++;
$form->setData($data);

But nothing changes. I have tried the above codes on other fields and they change the fields values normally. Am I missing something?

score 4 · Answer 1 · answered Jan 22 '16 at 11:01

4

Set the data on the $event:

$data = $event->getData();
$data['depth'] = $depth + 1;
$event->setData($data);

answered Jan 22 '16 at 11:01

Nikola K.

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trrrrrrm · Answer 2 · 2014-07-02T05:47:13.137

1

One thing i noticed is that you are using $depth++ which will assign the value first and then increment it so u will end up assigning the old value. try to change this:

$form->get('depth')->setData(++$depth);

Can you also try to change the Event to POST_SUBMIT, I believe if you use PRE_SUBMIT the submitted data will override any data you modify on PRE_SUBMIT

edited Jul 02 '14 at 05:47

answered Jul 01 '14 at 19:41

trrrrrrm

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Please explain why this fixes the problem. – Nathaniel Ford Jul 01 '14 at 20:33
Even though I was very skeptical about pre-increment vs post-increment theories here, I tried this and can confirm that the 'depth' value is still the same. – stevenll Jul 01 '14 at 21:42
I updated my answer, check if my other suggestion solves your issue – trrrrrrm Jul 02 '14 at 05:47
You cannot change the data of a submitted form. 500 Internal Server Error - AlreadySubmittedException – stevenll Jul 02 '14 at 15:46
then your best choice is to use data transformers explained here http://symfony.com/doc/master/cookbook/form/data_transformers.html – trrrrrrm Jul 03 '14 at 04:59

Symfony2 : How to change hidden field value on PRE_SUBMIT

2 Answers2