CaptchaBundle/Type/CaptchaType.php

94 lines
2.2 KiB
PHP
Executable File

<?php
namespace Gregwar\CaptchaBundle\Type;
use Symfony\Component\HttpFoundation\Session;
use Symfony\Component\DependencyInjection\ContainerInterface;
use Symfony\Component\Form\FormView;
use Symfony\Component\Form\FormInterface;
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilder;
use Symfony\Component\Form\Exception\FormException;
use Gregwar\CaptchaBundle\Validator\CaptchaValidator;
use Gregwar\CaptchaBundle\Generator\CaptchaGenerator;
/**
* Captcha type
*
* @author Gregwar <g.passault@gmail.com>
*/
class CaptchaType extends AbstractType
{
/**
* The image height
* @var integer
*/
protected $height;
/**
* The image width
* @var integer
*/
protected $width;
/**
* The session
* @var Symfony\Component\HttpFoundation\Session
*/
protected $session;
private $key = 'captcha';
public function __construct(Session $session, ContainerInterface $container)
{
$this->session = $session;
$this->height = $container->getParameter('gregwar_captcha.image.height');
$this->width = $container->getParameter('gregwar_captcha.image.width');
}
public function buildForm(FormBuilder $builder, array $options)
{
$builder->addValidator(
new CaptchaValidator($this->session, $this->key)
);
}
public function buildView(FormView $view, FormInterface $form)
{
$generator = new CaptchaGenerator($this->generateCaptchaValue());
$view->set('captcha_code', $generator->getCode($this->width, $this->height));
$view->set('captcha_width', $this->width);
$view->set('captcha_height', $this->height);
}
public function getParent(array $options)
{
return 'text';
}
public function getName()
{
return 'captcha';
}
private function generateCaptchaValue()
{
$charset = 'abcdefghijklmnopqrstuvwxyz0123456789';
$value = '';
$chars = str_split($charset);
for ($i=0; $i<5; $i++) {
$value.= $chars[array_rand($chars)];
}
$this->session->set($this->key, $value);
return $value;
}
}