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<?php
/**
* @link http://www.yiiframework.com/
* @copyright Copyright (c) 2008 Yii Software LLC
* @license http://www.yiiframework.com/license/
*/
namespace yii\validators;
use Yii;
use yii\base\InvalidConfigException;
use yii\helpers\Html;
use yii\web\JsExpression;
use yii\helpers\Json;
/**
* RegularExpressionValidator validates that the attribute value matches the specified [[pattern]].
*
* If the [[not]] property is set true, the validator will ensure the attribute value do NOT match the [[pattern]].
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @since 2.0
*/
class RegularExpressionValidator extends Validator
{
/**
* @var string the regular expression to be matched with
*/
public $pattern;
/**
* @var boolean whether to invert the validation logic. Defaults to false. If set to true,
* the regular expression defined via [[pattern]] should NOT match the attribute value.
* @throws InvalidConfigException if the "pattern" is not a valid regular expression
**/
public $not = false;
/**
* Initializes the validator.
* @throws InvalidConfigException if [[pattern]] is not set.
*/
public function init()
{
parent::init();
if ($this->pattern === null) {
throw new InvalidConfigException('The "pattern" property must be set.');
}
if ($this->message === null) {
$this->message = Yii::t('yii', '{attribute} is invalid.');
}
}
/**
* Validates the attribute of the object.
* If there is any error, the error message is added to the object.
* @param \yii\base\Model $object the object being validated
* @param string $attribute the attribute being validated
*/
public function validateAttribute($object, $attribute)
{
$value = $object->$attribute;
if (!$this->validateValue($value)) {
$this->addError($object, $attribute, $this->message);
}
}
/**
* Validates the given value.
* @param mixed $value the value to be validated.
* @return boolean whether the value is valid.
*/
public function validateValue($value)
{
return !is_array($value) &&
(!$this->not && preg_match($this->pattern, $value)
|| $this->not && !preg_match($this->pattern, $value));
}
/**
* Returns the JavaScript needed for performing client-side validation.
* @param \yii\base\Model $object the data object being validated
* @param string $attribute the name of the attribute to be validated.
* @param \yii\base\View $view the view object that is going to be used to render views or view files
* containing a model form with this validator applied.
* @return string the client-side validation script.
* @throws InvalidConfigException if the "pattern" is not a valid regular expression
*/
public function clientValidateAttribute($object, $attribute, $view)
{
$pattern = $this->pattern;
$pattern = preg_replace('/\\\\x\{?([0-9a-fA-F]+)\}?/', '\u$1', $pattern);
$deliminator = substr($pattern, 0, 1);
$pos = strrpos($pattern, $deliminator, 1);
$flag = substr($pattern, $pos + 1);
if ($deliminator !== '/') {
$pattern = '/' . str_replace('/', '\\/', substr($pattern, 1, $pos - 1)) . '/';
} else {
$pattern = substr($pattern, 0, $pos + 1);
}
if (!empty($flag)) {
$pattern .= preg_replace('/[^igm]/', '', $flag);
}
$options = array(
'pattern' => new JsExpression($pattern),
'not' => $this->not,
'message' => Html::encode(strtr($this->message, array(
'{attribute}' => $object->getAttributeLabel($attribute),
'{value}' => $object->$attribute,
))),
);
if ($this->skipOnEmpty) {
$options['skipOnEmpty'] = 1;
}
$view->registerAssetBundle('yii/form');
return 'yii.validation.regularExpression(value, messages, ' . Json::encode($options) . ');';
}
}