Auth_Basic::setModel PHP Метод

    public function setModel($model, $login_field = 'email', $password_field = 'password')
    {
        parent::setModel($model);
        $this->login_field = $login_field;
        $this->password_field = $password_field;
        // Load model from session
        if ($this->info && $this->recall('id')) {
            if ($this->recall('class', false) == get_class($this->model)) {
                $this->debug('Loading model from cache');
                $this->model->set($this->info);
                $this->model->dirty = array();
                $this->model->id = $this->recall('id', null);
            } else {
                // Class changed, re-fetch data from database
                $this->debug('Class changed, loading from database');
                $this->model->tryLoad($this->recall('id'));
                if (!$this->model->loaded()) {
                    $this->logout();
                }
                $this->memorizeModel();
            }
        }
        $id = $this->hook('tryLogin', array($model, $login_field, $password_field));
        if ($id && is_numeric($id)) {
            $this->model->tryLoad($id);
            $this->memorizeModel();
        }
        $t = $this;
        // If model is saved, update our cache too, but don't store password
        $this->model->addHook('afterSave', function ($m) use($t) {
            // after this model is saved, re-cache the info
            $tmp = $m->get();
            unset($tmp[$t->password_field]);
            if ($t->app instanceof App_Web) {
                $t->memorize('info', $tmp);
            }
        });
        $this->addEncryptionHook($this->model);
        if (strtolower($this->app->page) == 'logout') {
            $this->logout();
            $this->app->redirect('/');
        }
        return $this->model;
    }