_created_on === null) $this->_created_on = time(); return $this->_created_on; } public function setCreated_On($value) { $this->_created_on = $value; } public static function finder($className=__CLASS__) { return parent::finder($className); } public function saveMessage() { foreach(ChatUserRecord::finder()->findAll() as $user) { $message = new self; $message->for_user = $user->username; $message->from_user = $this->from_user; $message->message = $this->message; $message->save(); if($user->username == $this->from_user) { $user->last_activity = time(); //update the last activity; $user->save(); } } } public function getUserMessages($user) { $content = ''; foreach($this->findAll('for_user = ?', $user) as $message) $content .= $this->formatMessage($message); $this->deleteAll('for_user = ? OR created_on < ?', $user, time() - 300); //5 min inactivity return $content; } protected function formatMessage($message) { $user = htmlspecialchars($message->from_user); $content = htmlspecialchars($message->message); return "

{$user}: {$content}

"; } } ?>