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<?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\behaviors;
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use Yii;
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use yii\base\Event;
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use yii\db\BaseActiveRecord;
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/**
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* BlameableBehavior automatically fills the specified attributes with the current user ID.
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*
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* To use BlameableBehavior, insert the following code to your ActiveRecord class:
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*
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* ```php
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* use yii\behaviors\BlameableBehavior;
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*
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* public function behaviors()
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* {
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* return [
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* BlameableBehavior::className(),
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* ];
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* }
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* ```
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*
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* By default, BlameableBehavior will fill the `created_by` and `updated_by` attributes with the current user ID
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* when the associated AR object is being inserted; it will fill the `updated_by` attribute
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* with the current user ID when the AR object is being updated. If your attribute names are different, you may configure
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* the [[createdByAttribute]] and [[updatedByAttribute]] properties like the following:
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*
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* ```php
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* public function behaviors()
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* {
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* return [
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* [
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* 'class' => BlameableBehavior::className(),
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* 'createdByAttribute' => 'author_id',
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* 'updatedByAttribute' => 'updater_id',
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* ],
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* ];
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* }
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* ```
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*
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* @author Luciano Baraglia <luciano.baraglia@gmail.com>
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* @author Qiang Xue <qiang.xue@gmail.com>
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* @author Alexander Kochetov <creocoder@gmail.com>
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* @since 2.0
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*/
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class BlameableBehavior extends AttributeBehavior
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{
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/**
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* @var string the attribute that will receive current user ID value
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* Set this property to false if you do not want to record the creator ID.
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*/
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public $createdByAttribute = 'created_by';
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/**
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* @var string the attribute that will receive current user ID value
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* Set this property to false if you do not want to record the updater ID.
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*/
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public $updatedByAttribute = 'updated_by';
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/**
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* @var callable the value that will be assigned to the attributes. This should be a valid
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* PHP callable whose return value will be assigned to the current attribute(s).
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* The signature of the callable should be:
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*
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* ```php
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* function ($event) {
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* // return value will be assigned to the attribute(s)
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* }
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* ```
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*
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* If this property is not set, the value of `Yii::$app->user->id` will be assigned to the attribute(s).
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*/
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public $value;
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/**
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* @inheritdoc
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*/
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public function init()
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{
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parent::init();
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if (empty($this->attributes)) {
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$this->attributes = [
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BaseActiveRecord::EVENT_BEFORE_INSERT => [$this->createdByAttribute, $this->updatedByAttribute],
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BaseActiveRecord::EVENT_BEFORE_UPDATE => $this->updatedByAttribute,
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];
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}
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}
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/**
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* Evaluates the value of the user.
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* The return result of this method will be assigned to the current attribute(s).
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* @param Event $event
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* @return mixed the value of the user.
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*/
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protected function getValue($event)
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{
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if ($this->value === null) {
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$user = Yii::$app->get('user', false);
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return $user && !$user->isGuest ? $user->id : null;
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} else {
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return call_user_func($this->value, $event);
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}
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}
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}
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