Владимир Кравченко

public function getLazyFeed($param) {
        if (!$this->input->is_ajax_request()) {
            show_404();
        }
        $num = $this->input->get('num') ? $this->input->get('num') : 0;
        $lazyFeed = $this->news_model->getLazyFeed($num);
        $this->output
                ->set_content_type('application/json')
                ->set_output(json_encode($lazyFeed));
}