You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
96 lines
2.8 KiB
96 lines
2.8 KiB
<?php |
|
/** |
|
* @link http://www.yiiframework.com/ |
|
* @copyright Copyright (c) 2008 Yii Software LLC |
|
* @license http://www.yiiframework.com/license/ |
|
*/ |
|
|
|
namespace yii\validators; |
|
|
|
use Yii; |
|
use yii\base\InvalidConfigException; |
|
use yii\db\ActiveRecord; |
|
|
|
/** |
|
* UniqueValidator validates that the attribute value is unique in the corresponding database table. |
|
* |
|
* @author Qiang Xue <qiang.xue@gmail.com> |
|
* @since 2.0 |
|
*/ |
|
class UniqueValidator extends Validator |
|
{ |
|
/** |
|
* @var string the ActiveRecord class name or alias of the class |
|
* that should be used to look for the attribute value being validated. |
|
* Defaults to null, meaning using the ActiveRecord class of the attribute being validated. |
|
* @see attributeName |
|
*/ |
|
public $className; |
|
/** |
|
* @var string the ActiveRecord class attribute name that should be |
|
* used to look for the attribute value being validated. Defaults to null, |
|
* meaning using the name of the attribute being validated. |
|
*/ |
|
public $attributeName; |
|
|
|
/** |
|
* Initializes the validator. |
|
*/ |
|
public function init() |
|
{ |
|
parent::init(); |
|
if ($this->message === null) { |
|
$this->message = Yii::t('yii', '{attribute} "{value}" has already been taken.'); |
|
} |
|
} |
|
|
|
/** |
|
* Validates the attribute of the object. |
|
* If there is any error, the error message is added to the object. |
|
* @param \yii\db\ActiveRecord $object the object being validated |
|
* @param string $attribute the attribute being validated |
|
* @throws InvalidConfigException if table doesn't have column specified |
|
*/ |
|
public function validateAttribute($object, $attribute) |
|
{ |
|
$value = $object->$attribute; |
|
|
|
if (is_array($value)) { |
|
$this->addError($object, $attribute, Yii::t('yii', '{attribute} is invalid.')); |
|
return; |
|
} |
|
|
|
/** @var \yii\db\ActiveRecord $className */ |
|
$className = $this->className === null ? get_class($object) : $this->className; |
|
$attributeName = $this->attributeName === null ? $attribute : $this->attributeName; |
|
|
|
$query = $className::find(); |
|
$query->where([$attributeName => $value]); |
|
|
|
if (!$object instanceof ActiveRecord || $object->getIsNewRecord()) { |
|
// if current $object isn't in the database yet then it's OK just to call exists() |
|
$exists = $query->exists(); |
|
} else { |
|
// if current $object is in the database already we can't use exists() |
|
$query->limit(2); |
|
$objects = $query->all(); |
|
|
|
$n = count($objects); |
|
if ($n === 1) { |
|
if (in_array($attributeName, $className::primaryKey())) { |
|
// primary key is modified and not unique |
|
$exists = $object->getOldPrimaryKey() != $object->getPrimaryKey(); |
|
} else { |
|
// non-primary key, need to exclude the current record based on PK |
|
$exists = array_shift($objects)->getPrimaryKey() != $object->getOldPrimaryKey(); |
|
} |
|
} else { |
|
$exists = $n > 1; |
|
} |
|
} |
|
|
|
if ($exists) { |
|
$this->addError($object, $attribute, $this->message); |
|
} |
|
} |
|
}
|
|
|