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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\base\InvalidConfigException;
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use yii\db\BaseActiveRecord;
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use yii\helpers\Inflector;
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/**
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* SluggableBehavior automatically fills the specified attribute with the transliterated and adjusted version to use in URLs.
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*
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* To use SluggableBehavior, insert the following code to your ActiveRecord class:
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*
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* ```php
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* use yii\behaviors\SluggableBehavior;
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*
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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' => 'SluggableBehavior::className(),
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* 'attribute' => 'title',
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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 Alexander Kochetov <creocoder@gmail.com>
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* @since 2.0
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*/
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class SluggableBehavior extends AttributeBehavior
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{
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/**
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* @var string
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*/
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public $slugAttribute = 'slug';
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/**
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* @var string
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*/
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public $attribute;
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/**
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* @inheritdoc
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*/
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public function init()
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{
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parent::init();
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if (empty($this->attributes)) {
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$this->attributes = [BaseActiveRecord::EVENT_BEFORE_VALIDATE => $this->slugAttribute];
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}
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if ($this->attribute === null && $this->value === null) {
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throw new InvalidConfigException('Either "attribute" or "value" properties must be specified.');
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}
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}
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/**
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* @inheritdoc
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*/
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protected function getValue($event)
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{
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if ($this->attribute !== null) {
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$this->value = Inflector::slug($this->owner->{$this->attribute});
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}
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return parent::getValue($event);
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}
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}
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