Yarik / artbox-language

  <?php
      
      namespace artweb\artbox\language\models;
      
      use Yii;
      use yii\db\ActiveRecord;
      
      /**
       * This is the model class for table "language".
       *
       * @property integer $id
       * @property string  $url
       * @property string  $local
       * @property string  $name
       * @property boolean $default
       * @property integer $created_at
       * @property integer $updated_at
       */
      class Language extends ActiveRecord
      {
          
          /**
           * @var null|self
           */
          public static $current = null;
          
          /**
           * @inheritdoc
           */
          public static function tableName()
          {
              return 'language';
          }
          
          /**
           * @inheritdoc
           */
          public function behaviors()
          {
              return [
                  'timestamp' => [
                      'class'      => 'yii\behaviors\TimestampBehavior',
                      'attributes' => [
                          ActiveRecord::EVENT_BEFORE_INSERT => [
                              'created_at',
                              'updated_at',
                          ],
                          ActiveRecord::EVENT_BEFORE_UPDATE => [
                              'updated_at',
                          ],
                      ],
                  ],
              ];
          }
          
          /**
           * @inheritdoc
           */
          public function rules()
          {
              return [
                  [
                      [
                          'url',
                          'local',
                          'name',
                          'created_at',
                          'updated_at',
                      ],
                      'required',
                  ],
                  [
                      [ 'default' ],
                      'boolean',
                  ],
                  [
                      [
                          'created_at',
                          'updated_at',
                      ],
                      'integer',
                  ],
                  [
                      [
                          'url',
                          'local',
                          'name',
                      ],
                      'string',
                      'max' => 255,
                  ],
              ];
          }
          
          /**
           * @inheritdoc
           */
          public function attributeLabels()
          {
              return [
                  'id' => Yii::t('app', 'Language ID'),
                  'url'         => Yii::t('app', 'Url'),
                  'local'       => Yii::t('app', 'Local'),
                  'name'        => Yii::t('app', 'Name'),
                  'default'     => Yii::t('app', 'Default'),
                  'created_at'  => Yii::t('app', 'Date Create'),
                  'updated_at'  => Yii::t('app', 'Date Update'),
              ];
          }
          
          /**
           * Get current language
           *
           * @return null|Language
           */
          public static function getCurrent()
          {
              if (self::$current === null) {
                  self::$current = self::getDefaultLanguage();
              }
              return self::$current;
          }

          /**
           * Set current language by Url param
           *
           * @param null|string $url Language url param

           *
           * @return bool

           */
          public static function setCurrent($url = null)
          {
              $language = self::getLanguageByUrl($url);
              self::$current = ( $language === null ) ? self::getDefaultLanguage() : $language;
              Yii::$app->language = self::$current->local;

              if($language === null) {
                  return false;
              } else {
                  return true;
              }

          }
          
          /**
           * Get default language
           *
           * @return null|Language
           */
          public static function getDefaultLanguage()
          {
              /**
               * @var null|Language $language
               */
              $language = self::find()
                              ->where([ 'default' => true ])
                              ->one();
              return $language;
          }
          
          /**
           * Get language by Url param
           *
           * @param null|string $url Language url param
           *
           * @return null|Language
           */
          public static function getLanguageByUrl($url = null)
          {
              if ($url === null) {
                  return null;
              } else {
                  /**
                   * @var null|Language $language
                   */
                  $language = self::find()
                                  ->where([ 'url' => $url ])
                                  ->one();
                  if ($language === null) {
                      return null;
                  } else {
                      return $language;
                  }
              }
          }
      }