Get all errors along with fields the error is connected to

Question

I\'m using Symfony2 forms to validate POST and PUT requests to an API. The form handles binding the request data to the underlying entity and then validating the entity. Eve

Answer 1

I needed a solution to get an associative array of all errors of all nested forms with the key formated so it represents the document id of the corresponding form field element:

namespace Services;

use Symfony\Component\Form\Form;
use Symfony\Component\Form\FormErrorIterator;

/**
 * Class for converting forms.
 */
class FormConverter
{
    /**
     * Gets all errors of a form as an associative array with keys representing the dom id of the form element.
     *
     * @param Form $form
     * @param bool $deep Whether to include errors of child forms as well
     * @return array
     */
    public function errorsToArray(Form $form, $deep = false) {
        return $this->getErrors($form, $deep);
    }

    /**
     * @param Form $form
     * @param bool $deep
     * @param Form|null $parentForm
     * @return array
     */
    private function getErrors(Form $form, $deep = false, Form $parentForm = null) {
        $errors = [];

        if ($deep) {
            foreach ($form as $child) {
                if ($child->isSubmitted() && $child->isValid()) {
                    continue;
                }

                $iterator = $child->getErrors(true, false);

                if (0 === count($iterator)) {
                    continue;
                } elseif ($iterator->hasChildren()) {
                    $childErrors = $this->getErrors($iterator->getChildren()->getForm(), true, $child);
                    foreach ($childErrors as $key => $childError) {
                        $errors[$form->getName() . '_' . $child->getName() . '_' .$key] = $childError;
                    }
                } else {
                    foreach ($iterator as $error) {
                        $errors[$form->getName() . '_' . $child->getName()][] = $error->getMessage();
                    }
                }
            }
        } else {
            $errorMessages = $this->getErrorMessages($form->getErrors(false));
            if (count($errorMessages) > 0) {
                $formName = $parentForm instanceof Form ? $parentForm->getName() . '_' . $form->getName() : $form->getName();
                $errors[$formName] = $errorMessages;
            }
        }

        return $errors;
    }

    /**
     * @param FormErrorIterator $formErrors
     * @return array
     */
    private function getErrorMessages(FormErrorIterator $formErrors) {
        $errorMessages = [];
        foreach ($formErrors as $formError) {
            $errorMessages[] = $formError->getMessage();
        }

        return $errorMessages;
    }
}