Add form option in sonata admin class - sonata-admin

Question

How can I add custom option to formmMapper in sonata admin class?
I have form related to entity in admin class. For some reason I want to add my own options to one of the field
$formMapper
->with('tab.dimension')
->add('dimension', 'collection', array(
'type' => 'dimension_product',
'allow_add' => true,
'allow_delete' => true,
'required' => false,
'my_custom_options' => false,
))
->end();
Unfortunatly it is not possible in this way,because this options isn't defined in resolver.
But I have no access to resolver in "normal way".
Sonata defined form builder in two methods:
public function getFormBuilder()
{
$this->formOptions['data_class'] = $this->getClass();
$formBuilder = $this->getFormContractor()->getFormBuilder(
$this->getUniqid(),
$this->formOptions
);
$this->defineFormBuilder($formBuilder);
return $formBuilder;
}
public function defineFormBuilder(FormBuilder $formBuilder)
{
$mapper = new FormMapper($this->getFormContractor(), $formBuilder, $this);
$this->configureFormFields($mapper);
foreach ($this->getExtensions() as $extension) {
$extension->configureFormFields($mapper);
}
$this->attachInlineValidator();
}
Allowed options are defined in this object:
new FormMapper($this->getFormContractor(), $formBuilder, $this);
Could somebody give me advice how can i add my own option?

Answer 1

Little bit late to the party, but it sort of depends on what you want to do with this option.
If you need to add a real custom form option, it is not very much different from working directly with Symfony forms. You can add extra options and functionality to a given form type using a form extension . You could even add functionality to the sonata form types this way.
If you simply need to pass an option from one Admin to a child Admin (which I think you might want to do), you can use the field description options rather than the actual form options:
$formMapper
->with('tab.dimension')
->add('dimension', 'collection', array(
'type' => 'dimension_product',
'allow_add' => true,
'allow_delete' => true,
'required' => false,
), array(
'my_custom_options' => false,
))
->end();
Now in your child Admin you can retrieve these options using
$this->getParentFieldDescription()->getOptions();
To be used to configure your child Admin.