jQueryDateType.php

<?php

namespace MyNamespace\TechnicalFactBundle\Form\Type;

use Symfony\Component\Form\Extension\Core\Type\DateType;
use Symfony\Component\Form\FormInterface;
use Symfony\Component\Form\FormViewInterface;
use Symfony\Component\OptionsResolver\OptionsResolverInterface;

/**
 * Class Jquery data type
 */
class jQueryDateType extends DateType
{
    /**
     * Gets the name
     *
     * @return string
     */
    public function getName()
    {
        return 'jquery_date';
    }

    /**
     * {@inheritdoc}
     */
    public function finishView(FormViewInterface $view, FormInterface $form, array $options)
    {
        $view->setVar('widget', $options['widget']);

        // Remove date type, so that chrome does not show up its own date picker
        /*
        if ('single_text' === $options['widget']) {
            $view->setVar('type', 'date');
        }
        */

        if ($form->getConfig()->hasAttribute('formatter')) {
            $pattern = $form->getConfig()->getAttribute('formatter')->getPattern();
            $format = $pattern;

            $format = strtr($format, array('MMM' => 'M', 'yyyy' => 'yy'));
            $view->setVar('locale', \Locale::getDefault());
            $view->setVar('date_format', $format);

            if (count($view) > 0) {

                $pattern = $form->getConfig()->getAttribute('formatter')->getPattern();
                $format = $pattern;

                // set right order with respect to locale (e.g.: de_DE=dd.MM.yy; en_US=M/d/yy)
                // lookup various formats at http://userguide.icu-project.org/formatparse/datetime
                if (preg_match('/^([yMd]+).+([yMd]+).+([yMd]+)$/', $pattern)) {
                    $pattern = preg_replace(array('/y+/', '/M+/', '/d+/'), array('{{ year }}', '{{ month }}', '{{ day }}'), $pattern);
                } else {
                    // default fallback
                    $pattern = '{{ year }}-{{ month }}-{{ day }}';
                }

                $view->setVar('date_pattern', $pattern);
            }
        }
    }

    /**
     * Set default options
     *
     * @param OptionsResolverInterface $resolver
     */
    public function setDefaultOptions(OptionsResolverInterface $resolver)
    {
        parent::setDefaultOptions($resolver);

        $resolver->setDefaults(array(
            'widget' => 'single_text'
        ));
    }
}