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<?php
/**
* CNumberValidator class file.
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @link http://www.yiiframework.com/
* @copyright Copyright &copy; 2008-2009 Yii Software LLC
* @license http://www.yiiframework.com/license/
*/
/**
* CNumberValidator validates that the attribute value is a number.
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @version $Id$
* @package system.validators
* @since 1.0
*/
class CNumberValidator extends CValidator
{
/**
* @var boolean whether the attribute value can only be an integer. Defaults to false.
*/
public $integerOnly=false;
/**
* @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 integer|double upper limit of the number. Defaults to null, meaning no upper limit.
*/
public $max;
/**
* @var integer|double lower limit of the number. Defaults to null, meaning no lower limit.
*/
public $min;
/**
* @var string user-defined error message used when the value is too big.
*/
public $tooBig;
/**
* @var string user-defined error message used when the value is too small.
*/
public $tooSmall;
/**
* Validates the attribute of the object.
* If there is any error, the error message is added to the object.
* @param CModel the object being validated
* @param string the attribute being validated
*/
protected function validateAttribute($object,$attribute)
{
$value=$object->$attribute;
if($this->allowEmpty && ($value===null || $value===''))
return;
if($this->integerOnly)
{
if(is_string($value) && !preg_match('/^\s*[+-]?\d+\s*$/',$value))
{
$message=$this->message!==null?$this->message:Yii::t('yii','{attribute} must be an integer.');
$this->addError($object,$attribute,$message);
}
$value=(int)$value;
}
else
{
if(is_string($value) && !preg_match('/^\s*[-+]?[0-9]*\.?[0-9]+([eE][-+]?[0-9]+)?\s*$/',$value))
{
$message=$this->message!==null?$this->message:Yii::t('yii','{attribute} must be a number.');
$this->addError($object,$attribute,$message);
}
$value=(double)$value;
}
if($this->min!==null && $value<$this->min)
{
$message=$this->tooSmall!==null?$this->tooSmall:Yii::t('yii','{attribute} is too small (minimum is {min}).');
$this->addError($object,$attribute,$message,array('{min}'=>$this->min));
}
if($this->max!==null && $value>$this->max)
{
$message=$this->tooBig!==null?$this->tooBig:Yii::t('yii','{attribute} is too big (maximum is {max}).');
$this->addError($object,$attribute,$message,array('{max}'=>$this->max));
}
}
}
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