I'm working on a symfony2 backend for a backbone.js application. I have my model and form.
However, backbone.js sends some additional properties to the REST API when it's creating/updating a model and I'm struggling to get the form to validate.
How can I get a form in symfony2 to accept additional data, or how can I drop particular keys before binding data to a form?
You should use option "allow_extra_fields".
public function setDefaultOptions(OptionsResolverInterface $resolver)
{
$resolver->setDefaults(
array(
'allow_extra_fields' => true
)
);
}
For symfony 2.8+ use configureOptions(OptionsResolver $resolver) instead of setDefaultOptions(OptionsResolverInterface $resolver)
configureOptions(OptionsResolver $resolver) instead of the setDefaultOptions function.
property_path is now deprecated in sf 2.1, use "mapped" instead
$builder
->add("firstName", "text")
->add("lastName", "text")
->add("tac", "checkbox", array(
"mapped" => false
)
);
To get Symfony2 accept additional data, add the additional fields to your form builder, and set their property_path option to false:
Example:
$builder
->add('my_additional_field', 'checkbox', array(
'mapped' => false,
));
You don't need to drop the keys before binding the data, they'll be ignored anyway.
You can listen for FormEvents::BIND_CLIENT_DATA (or FormEvents::PRE_BIND if you are using 2.1 dev) event listener and add/remove fields. See this cookbook entry.
