Which is the best way to display 'flash messages' in kohana v3?

Question

I would like to know the best way to display flash messages in Kohana v3?

Some tutorials or examples would be helpful.

Answer 1

I've written a really simple class for this once. Check it out below. Usage examples below

class Notice {
    private static $session;
    private static $initialized = false;

    // current notices
    private static $notices = array();

    function __construct() {
    }

    static function init() {
        self::$session = Session::instance();
        self::$notices['current'] = json_decode(self::$session->get_once('flash'));
        if(!is_array(self::$notices['current'])) self::$notices['current'] = array();
        self::$initialized = true;
    }

    static function add($notice, $key=null) {
        if(!self::$initialized) self::init();
        if(!is_null($key)) {
            self::$notices['new'][$key] = $notice;
        } else {
            self::$notices['new'][] = $notice;
        }
        self::$session->set('flash', json_encode(self::$notices['new']));
        return true;
    }

    static function get($item = null) {
        if(!self::$initialized) self::init();
        if($item == null) {
            return self::$notices['current'];
        }
        if(!array_key_exists($item, self::$notices['current']))
                return null;
        return self::$notices['current'][$item];
    }
}

Examples (provided this class is saved as APPPATH . 'classes/notice.php'):

Notice::add('Something great has happened!');
Notice::add('Exciting! I\'ve got something to tell you!', 'message');

echo Notice::get('message'); // "Exciting! I've got ..."
foreach(Notice::get() as $message) {
   echo $i++ . $message .'
';
}

EDIT: funny... for some reason this question popped up somewhere, didn't notice it was a really old one... sorry for that!