public function __construct()
 {
     parent::__construct();
     $this->_productsRepo = new ProductsRepository(DbAdapter::getInstance());
     $this->_categoriesRepo = new CategoriesRepository(DbAdapter::getInstance());
     $this->_cartsRepo = new CartsRepository(DbAdapter::getInstance());
 }
 public function __construct()
 {
     parent::__construct();
     $this->_usersRepo = new UsersRepository(DbAdapter::getInstance());
 }