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84 lines
2.9 KiB
84 lines
2.9 KiB
<?php |
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/** |
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* CExistValidator class file. |
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* |
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* @link http://www.yiiframework.com/ |
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* @copyright Copyright © 2008-2012 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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/** |
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* CExistValidator 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 CExistValidator extends Validator |
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{ |
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/** |
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* @var string the ActiveRecord class name that should be used to |
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* look for the attribute value being validated. Defaults to null, |
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* meaning using the ActiveRecord class of the attribute being validated. |
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* You may use path alias to reference a class name here. |
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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 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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* @var array additional query criteria. This will be combined with the condition |
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* that checks if the attribute value exists in the corresponding table column. |
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* This array will be used to instantiate a {@link CDbCriteria} object. |
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*/ |
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public $criteria = array(); |
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/** |
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* @var boolean whether the attribute value can be null or empty. Defaults to true, |
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* meaning that if the attribute is empty, it is considered valid. |
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*/ |
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public $allowEmpty = true; |
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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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* @param \yii\base\Model $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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if ($this->allowEmpty && $this->isEmpty($value)) |
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return; |
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$className = $this->className === null ? get_class($object) : Yii::import($this->className); |
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$attributeName = $this->attributeName === null ? $attribute : $this->attributeName; |
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$finder = CActiveRecord::model($className); |
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$table = $finder->getTableSchema(); |
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if (($column = $table->getColumn($attributeName)) === null) |
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throw new CException(Yii::t('yii', 'Table "{table}" does not have a column named "{column}".', |
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array('{column}' => $attributeName, '{table}' => $table->name))); |
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$criteria = array('condition' => $column->rawName . '=:vp', 'params' => array(':vp' => $value)); |
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if ($this->criteria !== array()) |
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{ |
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$criteria = new CDbCriteria($criteria); |
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$criteria->mergeWith($this->criteria); |
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} |
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if (!$finder->exists($criteria)) |
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{ |
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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, array('{value}' => $value)); |
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} |
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} |
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} |
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