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83 lines
2.6 KiB
83 lines
2.6 KiB
<?php |
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/** |
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* @link http://www.yiiframework.com/ |
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* @copyright Copyright (c) 2008 Yii Software LLC |
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* @license http://www.yiiframework.com/license/ |
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*/ |
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namespace yii\validators; |
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use Yii; |
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use yii\base\InvalidConfigException; |
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/** |
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* ExistValidator validates that the attribute value exists in a table. |
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* |
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* This validator is often used to verify that a foreign key contains a value |
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* that can be found in the foreign table. |
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* |
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* @author Qiang Xue <qiang.xue@gmail.com> |
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* @since 2.0 |
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*/ |
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class ExistValidator extends Validator |
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{ |
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/** |
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* @var string the ActiveRecord class name or alias of the class |
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* that should be used to look for the attribute value being validated. |
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* Defaults to null, meaning using the ActiveRecord class of |
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* the attribute being validated. |
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* @see attributeName |
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*/ |
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public $className; |
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/** |
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* @var string the yii\db\ActiveRecord class attribute name that should be |
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* used to look for the attribute value being validated. Defaults to null, |
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* meaning using the name of the attribute being validated. |
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* @see className |
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*/ |
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public $attributeName; |
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/** |
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* Validates the attribute of the object. |
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* If there is any error, the error message is added to the object. |
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* |
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* @param \yii\db\ActiveRecord $object the object being validated |
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* @param string $attribute the attribute being validated |
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*/ |
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public function validateAttribute($object, $attribute) |
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{ |
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$value = $object->$attribute; |
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/** @var $className \yii\db\ActiveRecord */ |
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$className = $this->className === null ? get_class($object) : Yii::import($this->className); |
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$attributeName = $this->attributeName === null ? $attribute : $this->attributeName; |
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$query = $className::find(); |
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$query->where(array($attributeName => $value)); |
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if (!$query->exists()) { |
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$message = $this->message !== null ? $this->message : Yii::t('yii|{attribute} "{value}" is invalid.'); |
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$this->addError($object, $attribute, $message); |
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} |
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} |
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/** |
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* Validates the given value. |
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* @param mixed $value the value to be validated. |
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* @return boolean whether the value is valid. |
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* @throws InvalidConfigException if either [[className]] or [[attributeName]] is not set. |
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*/ |
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public function validateValue($value) |
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{ |
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if ($this->className === null) { |
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throw new InvalidConfigException('The "className" property must be set.'); |
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} |
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if ($this->attributeName === null) { |
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throw new InvalidConfigException('The "attributeName" property must be set.'); |
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} |
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/** @var $className \yii\db\ActiveRecord */ |
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$className = $this->className; |
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$query = $className::find(); |
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$query->where(array($this->attributeName => $value)); |
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return $query->exists(); |
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} |
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} |
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