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							351 lines
						
					
					
						
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							351 lines
						
					
					
						
							10 KiB
						
					
					
				<?php | 
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/** | 
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 * Created by Error202 | 
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 * Date: 24.08.2018 | 
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 */ | 
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 | 
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namespace core\behaviors; | 
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 | 
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use yii\base\Behavior; | 
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use yii\base\InvalidConfigException; | 
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use yii\db\ActiveRecord; | 
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use yii\db\ActiveQuery; | 
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 | 
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class LanguageBehavior extends Behavior | 
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{ | 
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	/** | 
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	 * Attributes for translate, ex.: ['name', 'content'] | 
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	 * @var array | 
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	 */ | 
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	public $attributes; | 
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 | 
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	/** | 
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	 * Class name for language active record entity | 
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	 * @var string | 
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	 */ | 
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	public $virtualClassName = 'VirtualTranslate'; | 
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 | 
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	/** | 
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	 * Field name for language in translate table | 
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	 * @var string | 
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	 */ | 
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	public $languageField = 'language'; | 
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 | 
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	/** | 
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	 * Field name for tables relative, ex.: 'post_id' | 
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	 * @var string | 
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	 */ | 
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	public $relativeField; | 
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 | 
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	/** | 
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	 * Available languages, ex.: ['en', 'ru'] | 
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	 * @var array | 
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	 */ | 
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	public $translatedLanguages; | 
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 | 
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	/** | 
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	 * Default language, ex.: 'en' | 
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	 * @var string | 
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	 */ | 
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	public $defaultLanguage; | 
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 | 
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	/** | 
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	 * Translate table name, ex.: 'post_lng' | 
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	 * @var string | 
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	 */ | 
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	public $tableName; | 
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 | 
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	/** | 
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	 * Abridge the language ID. | 
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	 * @var boolean whether to abridge the language ID. | 
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	 */ | 
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	public $abridge = true; | 
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 | 
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	/** | 
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	 * Delete relative if foreign key not set on delete: cascade | 
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	 * @var bool | 
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	 */ | 
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	public $forceDelete = false; | 
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 | 
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	private $ownerClassName; | 
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	private $ownerClassShortName; | 
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	private $ownerPrimaryKey; | 
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	private $languageAttributes = []; | 
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 | 
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	/** | 
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	 * Control events firing | 
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	 * @return array | 
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	 */ | 
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	public function events() | 
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	{ | 
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		return [ | 
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			ActiveRecord::EVENT_AFTER_FIND => 'afterFind', | 
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			ActiveRecord::EVENT_AFTER_UPDATE => 'afterUpdate', | 
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			ActiveRecord::EVENT_AFTER_INSERT => 'afterInsert', | 
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			ActiveRecord::EVENT_AFTER_DELETE => 'afterDelete', | 
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			//ActiveRecord::EVENT_BEFORE_VALIDATE => 'beforeValidate', | 
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		]; | 
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	} | 
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 | 
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	public function attach( $owner ) { | 
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		/** @var ActiveRecord $owner */ | 
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		parent::attach($owner); | 
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		if (empty($this->translatedLanguages) || !is_array($this->translatedLanguages)) { | 
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			throw new InvalidConfigException('Please specify array of available languages for the ' . get_class($this) . ' in the ' | 
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			                                 . get_class($this->owner) . ' or in the application parameters', 101); | 
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		} | 
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 | 
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		if (array_values($this->translatedLanguages) !== $this->translatedLanguages) { //associative array | 
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			$this->translatedLanguages = array_keys($this->translatedLanguages); | 
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		} | 
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 | 
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		if (!$this->defaultLanguage) { | 
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			throw new InvalidConfigException('Please specify default language for the ' . get_class($this)); | 
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		} | 
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 | 
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		if (empty($this->attributes) || !is_array($this->attributes)) { | 
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			throw new InvalidConfigException('Please specify translated attributes for the ' . get_class($this) . ' in the ' | 
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			                                 . get_class($this->owner), 103); | 
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		} | 
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 | 
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		$this->ownerClassName = get_class($this->owner); | 
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		$this->ownerClassShortName = $this->getShortClassName($this->ownerClassName); | 
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 | 
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		/** @var ActiveRecord $className */ | 
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		$className = $this->ownerClassName; | 
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		$this->ownerPrimaryKey = $className::primaryKey()[0]; | 
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 | 
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		if (!isset($this->relativeField)) { | 
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			throw new InvalidConfigException('Please specify relativeField for the ' . get_class($this) . ' in the ' | 
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			                                 . get_class($this->owner), 105); | 
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		} | 
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 | 
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		//$rules = $owner->rules(); | 
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		//$validators = $owner->getValidators(); | 
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		/*foreach ($rules as $rule) { | 
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			if (in_array($rule[1], $this->excludedValidators)) | 
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				continue; | 
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			$rule_attributes = is_array($rule[0]) ? $rule[0] : [$rule[0]]; | 
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			$attributes = array_intersect($this->attributes, $rule_attributes); | 
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			if (empty($attributes)) | 
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				continue; | 
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			$rule_attributes = []; | 
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			foreach ($attributes as $key => $attribute) { | 
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				foreach ($this->languages as $language) | 
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					if ($language != $this->defaultLanguage) | 
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						$rule_attributes[] = $this->getAttributeName($attribute, $language); | 
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			} | 
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			if (isset($rule['skipOnEmpty']) && !$rule['skipOnEmpty']) | 
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				$rule['skipOnEmpty'] = !$this->requireTranslations; | 
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			$params = array_slice($rule, 2); | 
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			if ($rule[1] !== 'required' || $this->requireTranslations) { | 
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				$validators[] = Validator::createValidator($rule[1], $owner, $rule_attributes, $params); | 
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			} elseif ($rule[1] === 'required') { | 
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				$validators[] = Validator::createValidator('safe', $owner, $rule_attributes, $params); | 
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			} | 
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		}*/ | 
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 | 
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		$this->createLanguageClass(); | 
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		$translation = new $this->virtualClassName; | 
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 | 
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		foreach ($this->translatedLanguages as $language) { | 
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			foreach ($this->attributes as $attribute) { | 
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				$attributeName = $attribute; | 
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				$this->setLanguageAttribute($attribute . '_' . $language, $translation->{$attributeName}); | 
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 | 
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				//$this->owner->__set($attribute . '_' . $language, $translation->{$attributeName}); | 
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				//$this->owner->{$attribute . '_' . $language} = $translation->{$attributeName}; | 
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				//$this->owner->createProperty($attribute . '_' . $language, $translation->{$attributeName}); | 
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 | 
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				if ($language == $this->defaultLanguage) { | 
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					$this->setLanguageAttribute($attribute, $translation->{$attributeName}); | 
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					//$this->owner->__set($attribute, $translation->{$attributeName}); | 
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				} | 
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			} | 
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		} | 
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	} | 
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 | 
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	/** | 
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	 * Insert event | 
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	 */ | 
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	public function afterInsert() | 
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	{ | 
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		$this->saveTranslations(); | 
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	} | 
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 | 
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	/** | 
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	 * Update event | 
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	 */ | 
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	public function afterUpdate() | 
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	{ | 
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		/** @var ActiveRecord $owner */ | 
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		$owner = $this->owner; | 
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		if ($owner->isRelationPopulated('translations')) { | 
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			$translations = $this->indexByLanguage($owner->getRelatedRecords()['translations']); | 
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			$this->saveTranslations($translations); | 
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		} | 
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	} | 
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 | 
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	/** | 
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	 * Find event | 
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	 */ | 
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	public function afterFind() | 
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	{ | 
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		/** @var ActiveRecord $owner */ | 
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		$owner = $this->owner; | 
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		if ($owner->isRelationPopulated('translations') && $related = $owner->getRelatedRecords()['translations']) { | 
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			$translations = $this->indexByLanguage($related); | 
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			foreach ($this->translatedLanguages as $language) { | 
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				foreach ($this->attributes as $attribute) { | 
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					foreach ($translations as $translation) { | 
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						if ($translation->{$this->languageField} == $language) { | 
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							$attributeName = $attribute; | 
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							$this->setLanguageAttribute($attribute . '_' . $language, $translation->{$attributeName}); | 
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							if ($language == $this->defaultLanguage) { | 
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								$this->setLanguageAttribute($attribute, $translation->{$attributeName}); | 
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							} | 
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						} | 
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					} | 
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				} | 
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			} | 
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		} else { | 
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			if (!$owner->isRelationPopulated('translation')) { | 
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				$owner->translation; | 
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			} | 
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			$translation = $owner->getRelatedRecords()['translation']; | 
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			if ($translation) { | 
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				foreach ($this->attributes as $attribute) { | 
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					$attribute_name = $attribute; | 
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					$owner->setLanguageAttribute($attribute, $translation->$attribute_name); | 
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				} | 
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			} | 
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		} | 
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		foreach ($this->attributes as $attribute) { | 
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			if ($owner->hasAttribute($attribute) && $this->getLangAttribute($attribute)) { | 
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				$owner->setAttribute($attribute, $this->getLangAttribute($attribute)); | 
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			} | 
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		} | 
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	} | 
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 | 
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	public function afterDelete() | 
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	{ | 
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		if ($this->forceDelete) { | 
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			/** @var ActiveRecord $owner */ | 
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			$owner = $this->owner; | 
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			$owner->unlinkAll('translations', true); | 
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		} | 
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	} | 
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 | 
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	public function createLanguageClass() | 
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	{ | 
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		if (!class_exists($this->virtualClassName, false)) { | 
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			eval(' | 
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            use yii\db\ActiveRecord; | 
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            class ' . $this->virtualClassName . ' extends ActiveRecord | 
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            { | 
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                public static function tableName() | 
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                { | 
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                    return \'' . $this->tableName . '\'; | 
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                } | 
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            }'); | 
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		} | 
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	} | 
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 | 
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	private function saveTranslations($translations = []) | 
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	{ | 
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		/** @var ActiveRecord $owner */ | 
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		$owner = $this->owner; | 
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		foreach ($this->translatedLanguages as $language) { | 
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			$isDefaultLanguage = $language == $this->defaultLanguage; | 
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			if (!isset($translations[$language])) { | 
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				/** @var ActiveRecord $translation */ | 
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				$translation = new $this->virtualClassName; | 
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				$translation->{$this->languageField} = $language; | 
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				$translation->{$this->relativeField} = $owner->getPrimaryKey(); | 
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			} else { | 
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				$translation = $translations[$language]; | 
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			} | 
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			$save = false; | 
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			foreach ($this->attributes as $attribute) { | 
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				//$value = $isDefaultLanguage ? $owner->$attribute : $owner->{$attribute . '_' . $language}; | 
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				$value = $isDefaultLanguage ? $owner->_form->$attribute : $owner->_form->{$attribute . '_' . $language}; | 
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				if ($value !== null) { | 
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					//$field = $isDefaultLanguage ? $attribute : $attribute . '_' . $language; | 
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					$field = $attribute; | 
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					$translation->$field = $value; | 
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					$save = true; | 
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				} | 
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			} | 
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			if ($translation->isNewRecord && !$save) { | 
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				continue; | 
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			} | 
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			$translation->save(); | 
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		} | 
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	} | 
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 | 
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	private function getShortClassName($className) | 
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	{ | 
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		return substr($className, strrpos($className, '\\') + 1); | 
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	} | 
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 | 
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	public function setLanguageAttribute($name, $value) | 
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	{ | 
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		$this->languageAttributes[$name] = $value; | 
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	} | 
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 | 
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	protected function indexByLanguage(array $records) | 
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	{ | 
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		$sorted = []; | 
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		foreach ($records as $record) { | 
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			$sorted[$record->{$this->languageField}] = $record; | 
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		} | 
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		unset($records); | 
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		return $sorted; | 
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	} | 
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 | 
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	/** | 
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	 * Relation to model translations | 
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	 * @return ActiveQuery | 
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	 */ | 
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	public function getTranslations() | 
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	{ | 
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		/** @var ActiveRecord  */ | 
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		return $this->owner->hasMany($this->virtualClassName, [$this->relativeField => $this->ownerPrimaryKey]); | 
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	} | 
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 | 
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	public function getTranslation($language = null) | 
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	{ | 
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		$language = $language ?: \Yii::$app->language; | 
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		// if translate exists | 
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		$translate = $this->virtualClassName::find() | 
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			->andWhere([$this->relativeField => $this->owner->id]) | 
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			->andWhere([$this->languageField => $language]) | 
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			->one(); | 
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 | 
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		$language = $translate ? $language : \Yii::$app->params['defaultLanguage']; | 
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 | 
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		return $this->owner->hasOne($this->virtualClassName, [$this->relativeField => $this->ownerPrimaryKey]) | 
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		                   ->where([$this->languageField => $language]); | 
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	} | 
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 | 
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	public function findTranslation($language = null) | 
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	{ | 
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		$language = $language ?: \Yii::$app->language; | 
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		//$class = call_user_func(array($this->virtualClassName, 'getInstance')); | 
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		return $this->virtualClassName::find() | 
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            ->andWhere([$this->relativeField => $this->owner->id]) | 
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			->andWhere([$this->languageField => $language]) | 
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			->one(); | 
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	} | 
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 | 
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	public function hasLangAttribute($name) | 
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	{ | 
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		return array_key_exists($name, $this->languageAttributes); | 
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	} | 
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 | 
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	public function getLangAttribute($name) | 
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	{ | 
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		return $this->hasLangAttribute($name) ? $this->languageAttributes[$name] : null; | 
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	} | 
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 | 
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}
 | 
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 |