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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\helpers\Json;
use yii\web\JsExpression;
/**
* 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 bool 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.
*/
public $not = false;
/**
* {@inheritdoc}
*/
public function init()
{
parent::init();
if ($this->pattern === null) {
throw new InvalidConfigException('The "pattern" property must be set.');
}
if ($this->message === null) {
$this->message = Yii::t('yii', '{attribute} is invalid.');
}
}
/**
* {@inheritdoc}
*/
protected function validateValue($value)
{
$valid = !is_array($value) &&
(!$this->not && preg_match($this->pattern, $value)
|| $this->not && !preg_match($this->pattern, $value));
return $valid ? null : [$this->message, []];
}
/**
* {@inheritdoc}
*/
public function clientValidateAttribute($model, $attribute, $view)
{
ValidationAsset::register($view);
$options = $this->getClientOptions($model, $attribute);
return 'yii.validation.regularExpression(value, messages, ' . Json::htmlEncode($options) . ');';
}
/**
* {@inheritdoc}
*/
public function getClientOptions($model, $attribute)
{
$pattern = Html::escapeJsRegularExpression($this->pattern);
$options = [
'pattern' => new JsExpression($pattern),
'not' => $this->not,
'message' => $this->formatMessage($this->message, [
'attribute' => $model->getAttributeLabel($attribute),
]),
];
if ($this->skipOnEmpty) {
$options['skipOnEmpty'] = 1;
}
return $options;
}
}