<?php /** * @link http://www.yiiframework.com/ * @copyright Copyright (c) 2008 Yii Software LLC * @license http://www.yiiframework.com/license/ */ namespace yii\validators; /** * DefaultValueValidator sets the attribute to be the specified default value. * * DefaultValueValidator is not really a validator. It is provided mainly to allow * specifying attribute default values when they are empty. * * @author Qiang Xue <qiang.xue@gmail.com> * @since 2.0 */ class DefaultValueValidator extends Validator { /** * @var mixed the default value or a PHP callable that returns the default value which will * be assigned to the attributes being validated if they are empty. The signature of the PHP callable * should be as follows, * * ```php * function foo($model, $attribute) { * // compute value * return $value; * } * ``` */ public $value; /** * @var boolean this property is overwritten to be false so that this validator will * be applied when the value being validated is empty. */ public $skipOnEmpty = false; /** * @inheritdoc */ public function validateAttribute($model, $attribute) { if ($this->isEmpty($model->$attribute)) { if ($this->value instanceof \Closure) { $model->$attribute = call_user_func($this->value, $model, $attribute); } else { $model->$attribute = $this->value; } } } }