Yiiframework Message Pop Up

He there! If have a question that is related to two different issues I currently have in an application I'm working on. Issue 1: - There is a message system. Users are able to se

Solution 1:

Here's a boilerplate you might use for long polling (using jQuery and Yii):

Server-side:

classMessagesControllerextendsCController{

    publicfunctionactionPoll($sincePk, $userPk) {
        while (true) {
            $messages = Message::model()->findAll([
                'condition' => '`t`.`userId` = :userPk AND `t`.`id` > :sincePk',
                'order'     => '`t`.`id` ASC',
                'params'    => [ ':userPk' => (int)$userPk, ':sincePk' => (int)$sincePk ],
            ]);

            if ($messages) {
                header('Content-Type: application/json; charset=utf-8');

                echo json_encode(array_map(function($message){
                    returnarray(
                        'pk' => $message->primaryKey,
                        'from' => $message->from,
                        'text' => $message->text,
                        /* and whatever more information you want to send */
                    );
                }, $messages));
            }

            sleep(1);
        }
    }

}

Client-side:

<?php$userPk = 1;
$lastMessage = Messages::model()->findByAttributes([ 'userId' => $userId ], [ 'order' => 'id ASC' ]);
$lastPk = $lastMessage ? $lastMessage->primaryKey : 0;
?>var poll = function( sincePk ) {
    $.get('/messages/poll?sincePk='+sincePk+'&userPk=<?=$userPk?>').then(function(data) {
        // the request ended, parse messages and poll againfor (var i = 0;i < data.length;i++)
            alert(data[i].from+': '+data[i].text);

        poll(data ? data[i].pk : sincePk);
    }, function(){
        // a HTTP error occurred (probable a timeout), just repoll
        poll(sincePk);
    });
}

poll(<?=$lastPk?>);

Remember to implement some kind of authentication to avoid users reading each others messages.