symfony3 : add password confirmation field to a password field

in most of the cases its a good idea to let the user confirm is password to prevent uneeded password support.

symfony2 has an own PasswordType in his formpackage.

Include the needed namespaces:
use Symfony\Component\Form\Extension\Core\Type\RepeatedType;
use Symfony\Component\Form\Extension\Core\Type\PasswordType;

add the PassWordType to your form

	<?php
	namespace Check\BlogBundle\Form;
	use Symfony\Component\Form\AbstractType;
	use Symfony\Component\Form\FormBuilderInterface;
	use Symfony\Component\OptionsResolver\OptionsResolverInterface;
	use Symfony\Component\Form\Extension\Core\Type\EmailType;
	use Symfony\Component\Form\Extension\Core\Type\RepeatedType;
	use Symfony\Component\Form\Extension\Core\Type\PasswordType;
	class UserType extends AbstractType
	{
	public function buildForm(FormBuilderInterface $builder, array $options)
	{
	$builder
	->add('username')
	->add('email', EmailType::class,array('empty_data' => null))
	->add('password',RepeatedType::class, array(
	'type' => PasswordType::class,
	'first_options' => array('label' => 'Password'),
	'second_options' => array('label' => 'Repeat Password')))
	->add('firstname')
	->add('lastname')
	;
	}
	public function setDefaultOptions(OptionsResolverInterface $resolver)
	{
	$resolver->setDefaults(array(
	'data_class' => 'Check\BlogBundle\Entity\User'
	));
	}
	public function getBlockPrefix()
	{
	return 'check_blogbundle_user';
	}
	}

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