access underlying entity in symfony2 form builder

Question

I'm looking for a way to access the data class entity in a symfony2 form builder class.

The reason I need this is because the text on the submit button should change depending on a value of this entity (a value the user cannot change in the form).

so basically I want to do:

if ($this->entity->getVariable() == xxx) {
// do something
} else {
// do something else
}

inside the form builder class

Tom · Accepted Answer · 2013-12-16 07:02:41Z

3

praxmatig pointed me in the right direction, the solution is even easier:

the underlying entity is automatically available as an option named "data", so you can do:

public function buildForm(FormBuilderInterface $builder, array $options) {
   // whatever

   if (isset($options['data'])) {
      switch ($options['data']->getSomeVariable()) {
      // whatever
      }
   }

   // whatever
}

answered Dec 16, 2013 at 7:02

Tom

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praxmatig · Accepted Answer · 2013-12-16 06:49:24Z

1

If you create the form from controller, you can pass anything you want as the options

// AcmeType.php
public function buildForm(FormBuilderInterface $builder, array $options)
{
    $entity = $options['entity'];
}

// AcmeController.php
$form = $this->createForm(new AcmeType(), $entity, array('entity' => $entity));

Or a better but harder way to do this is using the form event

answered Dec 16, 2013 at 6:49

praxmatig

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