flash.md

title
Flash Messages

Flash messages are a cool way to display notifications and alerts to the user. These messages will dissapear once the page is refreshed.

Usage

You can send flash messages in your controller methods like this: $this->flash->addMessage('Test', 'This is a message'); This will display as a flash message on the view to the user. There are different colors you can use by simply changing the name passed as a parameter. Example

 $this->flash->addMessage('default', 'This is a message'); //plain
 $this->flash->addMessage('info', 'This is a message'); //blue
 $this->flash->addMessage('warning', 'This is a message'); //yellow
 $this->flash->addMessage('success', 'This is a message');  //green
 $this->flash->addMessage('error', 'This is a message'); //red
    

Below is an example usage. The user will see the message when the page refreshes or when they move to the next page

$app->get('/foo', function ($req, $res, $args) {
    // Set flash message for next request
    $this->flash->addMessage('info', 'This is a message');

    // Redirect
    return $res->withStatus(302)->withHeader('Location', '/bar');
});

You can get previous flash message

$app->get('/bar', function ($req, $res, $args) {
    // Get flash messages from previous request
    $messages = $this->flash->getMessages();
    print_r($messages);
});

Please note that a message could be a string, object or array. Please check what your storage can handle.