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<?php
/**
* CRegularExpressionValidator class file.
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @link http://www.yiiframework.com/
* @copyright 2008-2013 Yii Software LLC
* @license http://www.yiiframework.com/license/
*/
/**
* CRegularExpressionValidator validates that the attribute value matches to the specified {@link pattern regular expression}.
* You may invert the validation logic with help of the {@link not} property (available since 1.1.5).
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @package system.validators
* @since 1.0
*/
class CRegularExpressionValidator extends CValidator
{
/**
* @var string the regular expression to be matched with
*/
public $pattern;
/**
* @var boolean whether the attribute value can be null or empty. Defaults to true,
* meaning that if the attribute is empty, it is considered valid.
*/
public $allowEmpty=true;
/**
* @var boolean whether to invert the validation logic. Defaults to false. If set to true,
* the regular expression defined via {@link pattern} should NOT match the attribute value.
* @since 1.1.5
**/
public $not=false;
/**
* Validates the attribute of the object.
* If there is any error, the error message is added to the object.
* @param CModel $object the object being validated
* @param string $attribute the attribute being validated
* @throws CException if given {@link pattern} is empty
*/
protected function validateAttribute($object,$attribute)
{
$value=$object->$attribute;
if($this->allowEmpty && $this->isEmpty($value))
return;
if($this->pattern===null)
throw new CException(Yii::t('yii','The "pattern" property must be specified with a valid regular expression.'));
// reason of array checking explained here: https://github.com/yiisoft/yii/issues/1955
if(is_array($value) ||
(!$this->not && !preg_match($this->pattern,$value)) ||
($this->not && preg_match($this->pattern,$value)))
{
$message=$this->message!==null?$this->message:Yii::t('yii','{attribute} is invalid.');
$this->addError($object,$attribute,$message);
}
}
/**
* Returns the JavaScript needed for performing client-side validation.
* @param CModel $object the data object being validated
* @param string $attribute the name of the attribute to be validated.
* @throws CException if given {@link pattern} is empty
* @return string the client-side validation script.
* @see CActiveForm::enableClientValidation
* @since 1.1.7
*/
public function clientValidateAttribute($object,$attribute)
{
if($this->pattern===null)
throw new CException(Yii::t('yii','The "pattern" property must be specified with a valid regular expression.'));
$message=$this->message!==null ? $this->message : Yii::t('yii','{attribute} is invalid.');
$message=strtr($message, array(
'{attribute}'=>$object->getAttributeLabel($attribute),
));
$pattern=$this->pattern;
$pattern=preg_replace('/\\\\x\{?([0-9a-fA-F]+)\}?/', '\u$1', $pattern);
$delim=substr($pattern, 0, 1);
$endpos=strrpos($pattern, $delim, 1);
$flag=substr($pattern, $endpos + 1);
if ($delim!=='/')
$pattern='/' . str_replace('/', '\\/', substr($pattern, 1, $endpos - 1)) . '/';
else
$pattern = substr($pattern, 0, $endpos + 1);
if (!empty($flag))
$pattern .= preg_replace('/[^igm]/', '', $flag);
return "
if(".($this->allowEmpty ? "jQuery.trim(value)!='' && " : '').($this->not ? '' : '!')."value.match($pattern)) {
messages.push(".CJSON::encode($message).");
}
";
}
}
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