/*
 * Add entry into DB (AJAX supported)
 * 
 * @param:    void
 * @return:   void
 */
public function add() {
    $post = $this->input->post();
    $form = View::factory('admin/add_team');
    $form->action = 'none';

    if(!empty($post)) {
        $post = new Validation($post);

        $post->pre_filter('trim');
        $post->add_rules('name', 'required', 'length[2,45]');
        $post->add_rules('leader', 'required', 'numeric');
        $post->add_callbacks('name', array($this, '_check_name'));

        if($post->validate()) {
            $form->action = 'success';
            $team = ORM::factory('team');
            $team->name = $post->name;
            $team->user_id = $post->leader;
            $team->save();
        } else {
            $form->action = 'fail';				
            $form->errors = $post->errors();		
        }
    }

    if(request::is_ajax()) {
        $this->auto_render = false;
        $form->render(true);
    } else {
        $this->template->content = $form;
    }	
}