Restrictable date type

gistfile1.php

class RestrictedDateType extends DateType {

    public function buildView(FormView $view, FormInterface $form, array $options)
    {
        parent::buildView($view, $form, $options);

        // transport the option into the form block
        $view->vars['restricted'] = $options['restricted'];

    }




    public function setDefaultOptions(OptionsResolverInterface $resolver)
    {
        parent::setDefaultOptions($resolver);

        /* add the "restricted" option to allow configuration during form generation

        $builder->add('restrict', new RestrictedDateType(), array(
                'widget'     => 'single_text',
                'restricted' => array('2014-01-03')
            ))

        */

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


    /**
     * Returns the name of this type.
     *
     * @return string The name of this type
     */
    public function getName()
    {
        return 'restricted_date';
    }
}