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<?php |
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/** |
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* _ __ __ _____ _____ ___ ____ _____ |
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* | | / // // ___//_ _// || __||_ _| |
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* | |/ // /(__ ) / / / /| || | | | |
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* |___//_//____/ /_/ /_/ |_||_| |_| |
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* @link http://vistart.name/ |
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* @copyright Copyright (c) 2016 vistart |
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* @license http://vistart.name/license/ |
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*/ |
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namespace vistart\Models\traits; |
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use vistart\helpers\Number; |
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/** |
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* Entity features concerning GUID. |
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* @property-read array $guidRules |
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* @property string $guid |
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* @version 2.0 |
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* @author vistart <[email protected]> |
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*/ |
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trait GUIDTrait |
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{ |
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/** |
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* @var string REQUIRED. The attribute that will receive the GUID value. |
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*/ |
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public $guidAttribute = 'guid'; |
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/** |
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* Attach `onInitGuidAttribute` event. |
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* @param string $eventName |
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*/ |
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protected function attachInitGuidEvent($eventName) |
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{ |
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$this->on($eventName, [$this, 'onInitGuidAttribute']); |
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} |
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/** |
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* Initialize the GUID attribute with new generated GUID. |
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* This method is ONLY used for being triggered by event. DO NOT call, |
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* override or modify it directly, unless you know the consequences. |
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* @param \yii\base\Event $event |
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* @since 1.1 |
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*/ |
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public function onInitGuidAttribute($event) |
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{ |
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$sender = $event->sender; |
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$guidAttribute = $sender->guidAttribute; |
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if (is_string($guidAttribute)) { |
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$sender->$guidAttribute = static::generateGuid(); |
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} |
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} |
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/** |
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* Generate GUID. It will check if the generated GUID existed in database |
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* table, if existed, it will regenerate one. |
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* @return string the generated GUID. |
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*/ |
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public static function generateGuid() |
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{ |
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return Number::guid(); |
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} |
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/** |
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* Check if the $uuid existed in current database table. |
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* @param string $guid the GUID to be checked. |
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* @return boolean Whether the $guid exists or not. |
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*/ |
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public static function checkGuidExists($guid) |
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{ |
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return (self::findOne($guid) !== null); |
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} |
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/** |
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* Get the rules associated with guid attribute. |
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* @return array rules. |
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*/ |
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public function getGuidRules() |
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{ |
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$rules = []; |
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if (is_string($this->guidAttribute)) { |
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$rules = [ |
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[[$this->guidAttribute], 'required',], |
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[[$this->guidAttribute], 'unique',], |
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[[$this->guidAttribute], 'string', 'max' => 36], |
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]; |
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} |
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return $rules; |
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} |
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/** |
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* Get guid, in spite of guid attribute name. |
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* @return string |
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*/ |
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public function getGuid() |
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{ |
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$guidAttribute = $this->guidAttribute; |
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return is_string($guidAttribute) ? $this->$guidAttribute : null; |
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} |
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/** |
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* Set guid, in spite of guid attribute name. |
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* @param string $guid |
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* @return string |
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*/ |
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public function setGuid($guid) |
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{ |
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$guidAttribute = $this->guidAttribute; |
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return is_string($guidAttribute) ? $this->$guidAttribute = $guid : null; |
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} |
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} |
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vistart /
yii2-models
This check looks for methods that are used by a trait but not required by it.
To illustrate, let’s look at the following code example
The trait
Idableprovides a methodequalsIdthat in turn relies on the methodgetId(). If this method does not exist on a class mixing in this trait, the method will fail.Adding the
getId()as an abstract method to the trait will make sure it is available.