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<?php
/**
* @link http://www.yiiframework.com/
* @copyright Copyright (c) 2008 Yii Software LLC
* @license http://www.yiiframework.com/license/
*/
namespace yii\behaviors;
use Yii;
use yii\db\BaseActiveRecord;
/**
* BlameableBehavior automatically fills the specified attributes with the current user ID.
*
* To use BlameableBehavior, insert the following code to your ActiveRecord class:
*
* ```php
* use yii\behaviors\BlameableBehavior;
*
* public function behaviors()
* {
* return [
* BlameableBehavior::className(),
* ];
* }
* ```
*
* By default, BlameableBehavior will fill the `created_by` and `updated_by` attributes with the current user ID
* when the associated AR object is being inserted; it will fill the `updated_by` attribute
* with the current user ID when the AR object is being updated.
*
* Because attribute values will be set automatically by this behavior, they are usually not user input and should therefore
* not be validated, i.e. `created_by` and `updated_by` should not appear in the [[\yii\base\Model::rules()|rules()]] method of the model.
*
* If your attribute names are different, you may configure the [[createdByAttribute]] and [[updatedByAttribute]]
* properties like the following:
*
* ```php
* public function behaviors()
* {
* return [
* [
* 'class' => BlameableBehavior::className(),
* 'createdByAttribute' => 'author_id',
* 'updatedByAttribute' => 'updater_id',
* ],
* ];
* }
* ```
*
* @author Luciano Baraglia <luciano.baraglia@gmail.com>
* @author Qiang Xue <qiang.xue@gmail.com>
* @author Alexander Kochetov <creocoder@gmail.com>
* @since 2.0
*/
class BlameableBehavior extends AttributeBehavior
{
/**
* @var string the attribute that will receive current user ID value
* Set this property to false if you do not want to record the creator ID.
*/
public $createdByAttribute = 'created_by';
/**
* @var string the attribute that will receive current user ID value
* Set this property to false if you do not want to record the updater ID.
*/
public $updatedByAttribute = 'updated_by';
/**
* {@inheritdoc}
*
* In case, when the property is `null`, the value of `Yii::$app->user->id` will be used as the value.
*/
public $value;
/**
* @var mixed Default value for cases when the user is guest
* @since 2.0.14
*/
public $defaultValue;
/**
* {@inheritdoc}
*/
public function init()
{
parent::init();
if (empty($this->attributes)) {
$this->attributes = [
BaseActiveRecord::EVENT_BEFORE_INSERT => [$this->createdByAttribute, $this->updatedByAttribute],
BaseActiveRecord::EVENT_BEFORE_UPDATE => $this->updatedByAttribute,
];
}
}
/**
* {@inheritdoc}
*
* In case, when the [[value]] property is `null`, the value of [[defaultValue]] will be used as the value.
*/
protected function getValue($event)
{
if ($this->value === null && Yii::$app->has('user')) {
$userId = Yii::$app->get('user')->id;
if ($userId === null) {
return $this->getDefaultValue($event);
}
return $userId;
} elseif ($this->value === null) {
return $this->getDefaultValue($event);
}
return parent::getValue($event);
}
/**
* Get default value
* @param \yii\base\Event $event
* @return array|mixed
* @since 2.0.14
*/
protected function getDefaultValue($event)
{
if ($this->defaultValue instanceof \Closure || (is_array($this->defaultValue) && is_callable($this->defaultValue))) {
return call_user_func($this->defaultValue, $event);
}
return $this->defaultValue;
}
}