skeeks\cms\models\User::generateUsername PHP Method

    public function generateUsername()
    {
        /*if ($this->email)
          {
              $userName = \skeeks\cms\helpers\StringHelper::substr($this->email, 0, strpos() );
          }*/
        $userLast = static::find()->orderBy("id DESC")->one();
        $this->username = "id" . ($userLast->id + 1);
        if (static::find()->where(['username' => $this->username])->one()) {
            $this->username = $this->username . "_" . \skeeks\cms\helpers\StringHelper::substr(md5(time()), 0, 6);
        }
        return $this;
    }