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<?php |
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/** |
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* @link http://www.yiiframework.com/ |
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* @copyright Copyright (c) 2008 Yii Software LLC |
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* @license http://www.yiiframework.com/license/ |
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*/ |
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namespace yii\captcha; |
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use Yii; |
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use yii\base\InvalidConfigException; |
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use yii\validators\ValidationAsset; |
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use yii\validators\Validator; |
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/** |
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* CaptchaValidator validates that the attribute value is the same as the verification code displayed in the CAPTCHA. |
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* |
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* CaptchaValidator should be used together with [[CaptchaAction]]. |
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* |
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* Note that once CAPTCHA validation succeeds, a new CAPTCHA will be generated automatically. As a result, |
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* CAPTCHA validation should not be used in AJAX validation mode because it may fail the validation |
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* even if a user enters the same code as shown in the CAPTCHA image which is actually different from the latest CAPTCHA code. |
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* |
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* @author Qiang Xue <[email protected]> |
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* @since 2.0 |
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*/ |
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class CaptchaValidator extends Validator |
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{ |
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/** |
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* @var bool whether to skip this validator if the input is empty. |
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*/ |
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public $skipOnEmpty = false; |
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/** |
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* @var bool whether the comparison is case sensitive. Defaults to false. |
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*/ |
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public $caseSensitive = false; |
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/** |
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* @var string the route of the controller action that renders the CAPTCHA image. |
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*/ |
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public $captchaAction = 'site/captcha'; |
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/** |
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* @inheritdoc |
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*/ |
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public function init() |
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{ |
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parent::init(); |
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if ($this->message === null) { |
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$this->message = Yii::t('yii', 'The verification code is incorrect.'); |
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} |
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} |
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/** |
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* @inheritdoc |
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*/ |
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protected function validateValue($value) |
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{ |
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$captcha = $this->createCaptchaAction(); |
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$valid = !is_array($value) && $captcha->validate($value, $this->caseSensitive); |
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return $valid ? null : [$this->message, []]; |
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} |
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/** |
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* Creates the CAPTCHA action object from the route specified by [[captchaAction]]. |
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* @return \yii\captcha\CaptchaAction the action object |
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* @throws InvalidConfigException |
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*/ |
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public function createCaptchaAction() |
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{ |
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$ca = Yii::$app->createController($this->captchaAction); |
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if ($ca !== false) { |
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/* @var $controller \yii\base\Controller */ |
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list($controller, $actionID) = $ca; |
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$action = $controller->createAction($actionID); |
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if ($action !== null) { |
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return $action; |
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} |
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} |
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throw new InvalidConfigException('Invalid CAPTCHA action ID: ' . $this->captchaAction); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function clientValidateAttribute($model, $attribute, $view) |
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{ |
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ValidationAsset::register($view); |
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$options = $this->getClientOptions($model, $attribute); |
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return 'yii.validation.captcha(value, messages, ' . json_encode($options, JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE) . ');'; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function getClientOptions($model, $attribute) |
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{ |
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$captcha = $this->createCaptchaAction(); |
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$code = $captcha->getVerifyCode(false); |
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$hash = $captcha->generateValidationHash($this->caseSensitive ? $code : strtolower($code)); |
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$options = [ |
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'hash' => $hash, |
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'hashKey' => 'yiiCaptcha/' . $captcha->getUniqueId(), |
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'caseSensitive' => $this->caseSensitive, |
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'message' => Yii::$app->getI18n()->format($this->message, [ |
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'attribute' => $model->getAttributeLabel($attribute), |
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], Yii::$app->language), |
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]; |
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if ($this->skipOnEmpty) { |
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$options['skipOnEmpty'] = 1; |
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} |
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return $options; |
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} |
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} |
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yiisoft /
yii2
