how to return json encoded form errors in symfony
I've finally found the solution to this problem here, it only needed a small fix to comply to latest symfony changes and it worked like a charm:
The fix consists in replacing line 33
if (count($child->getIterator()) > 0) {
with
if (count($child->getIterator()) > 0 && ($child instanceof \Symfony\Component\Form\Form)) {
because, with the introduction in symfony of Form\Button, a type mismatch will occur in serialize function which is expecting always an instance of Form\Form.
You can register it as a service:
services:
form_serializer:
class: Wooshii\SiteBundle\FormErrorsSerializer
and then use it as the author suggest:
$errors = $this->get('form_serializer')->serializeFormErrors($form, true, true);
I am using this, it works quiet well:
/**
* List all errors of a given bound form.
*
* @param Form $form
*
* @return array
*/
protected function getFormErrors(Form $form)
{
$errors = array();
// Global
foreach ($form->getErrors() as $error) {
$errors[$form->getName()][] = $error->getMessage();
}
// Fields
foreach ($form as $child /** @var Form $child */) {
if (!$child->isValid()) {
foreach ($child->getErrors() as $error) {
$errors[$child->getName()][] = $error->getMessage();
}
}
}
return $errors;
}