Model–view–controller (MVC) is a software design pattern for implementing user interfaces on computers. It divides a given software application into three interconnected parts, so as to separate internal representations of information from the ways that information is presented to or accepted from the user.

[wikipedia]

How does it work?

The MVC implemented in the framework is a modified and improved version of a forked project named Lightweight MVC; it utilizes existing WordPress functionality to prevent overloading the already heavy loaded WordPress core.

Usage

MVC is integrated into the Main Class and can be accessed by calling to the property $this->mvc.

class Main extends Bridge
{
    public function on_admin()
    {
        // Hook "save_post" added using legacy function instead
        // of Main Class definition.
        add_action( 'save_post', array( &$this, 'custom_save_post' ) );
    }
    
    /**
     * Legacy handler for action "save_post".
     * Use of MVC engine.
     */
    public function custom_save_post( $post_id )
    {
        $this->mvc->call( 'PostController@save', $post_id );
    }
}

In the sample above, a WordPress action hook is added to the Main Class using legacy functions (WordPress very own add_action) and in the handler, the MVC property is called.