Phalcon flash messages with Bootstrap 3 integration

FlashBootstrap.php

<?php

namespace Ext;

/**
 * Extension to Phalcon Framework to implement Bootstrap 3 dismissable messages.
 * Pass mappings of phalcon to bootstrap classes to construct
 * @link https://docs.phalconphp.com/uk/latest/reference/flash.html Phalcon flash docs
 * @author Kevin Andrews <[email protected]>
 */
class FlashBootstrap extends \Phalcon\Flash\Session
{
    
    protected $_cssClasses = [
      'error'   => 'alert alert-danger alert-dismissible',
      'notice'   => 'alert alert-info alert-dismissible',
      'success'   => 'alert alert-success alert-dismissible',
      'warning'   => 'alert alert-dismissible'
    ];

    /**
     * Correctly escapes the message while building a Bootstrap 3
     * compatible dismissable message with surrounding html.
     * @param string $type
     * @param string $message
     * @return void
     */
    public function message($type, $message)
    {
        $bootstrapCssClass = $this->_cssClasses[$type];
        $errorType = ucfirst($type);
        $bootstrapMessage = "<div class=\"{$bootstrapCssClass}\" role=\"alert\"><button type=\"button\" class=\"close\" data-dismiss=\"alert\" aria-label=\"Close\"><span aria-hidden=\"true\">&times;</span></button><strong>{$errorType}:</strong> {$this->getEscaperService()->escapeHtml($message)}</div>";
        parent::message($type, $bootstrapMessage);
    }

}

Initialise in services like so:

$di->set('flash', function() {
    $bootstrapFlash = new Ext\FlashBootstrap(array(
        'error' => 'alert alert-danger alert-dismissible',
        'success' => 'alert alert-success alert-dismissible',
        'notice' => 'alert alert-info alert-dismissible',
        'warning' => 'alert alert-dismissible',
    ));
    $bootstrapFlash->setAutoescape(false);
    $bootstrapFlash->setAutomaticHtml(false);
    return $bootstrapFlash;
});

Html is built up inside message which is used by all helper methods (->success(),'error->()',notice-.(),warning->())
The message is escaped using $this->getEscaperService()->escapeHtml($message) and disabled in the parent class to allow custom Bootstrap html.