bbpress-custom-roles

//code to add tutor role

function add_new_roles( $bbp_roles )
{
    /* Add a role called tutor */
    $bbp_roles['bbp_tutor'] = array(
        'name' => 'Tutor',
        'capabilities' => custom_capabilities( 'bbp_tutor' )
        );

    return $bbp_roles;
}

add_filter( 'bbp_get_dynamic_roles', 'add_new roles', 1 );

function add_role_caps_filter( $caps, $role )
{
    /* Only filter for roles we are interested in! */
    if( $role == 'bbp_tutor' )
        $caps = custom_capabilities( $role );

    return $caps;
}

add_filter( 'bbp_get_caps_for_role', 'add_role_caps_filter', 10, 2 );

function custom_capabilities( $role )
{
    switch ( $role )
    {

        /* Capabilities for 'tutor' role */
        case 'bbp_tutor':
            return array(
                // Primary caps
                'spectate'              => true,
                'participate'           => true,
                'moderate'              => false,
                'throttle'              => false,
                'view_trash'            => false,

                // Forum caps
                'publish_forums'        => false,
                'edit_forums'           => false,
                'edit_others_forums'    => false,
                'delete_forums'         => false,
                'delete_others_forums'  => false,
                'read_private_forums'   => true,
                'read_hidden_forums'    => false,

                // Topic caps
                'publish_topics'        => true,
                'edit_topics'           => true,
                'edit_others_topics'    => false,
                'delete_topics'         => false,
                'delete_others_topics'  => false,
                'read_private_topics'   => true,

                // Reply caps
                'publish_replies'       => true,
                'edit_replies'          => true,
                'edit_others_replies'   => false,
                'delete_replies'        => false,
                'delete_others_replies' => false,
                'read_private_replies'  => true,

                // Topic tag caps
                'manage_topic_tags'     => false,
                'edit_topic_tags'       => false,
                'delete_topic_tags'     => false,
                'assign_topic_tags'     => true,
            );


            break;

        default :
            return $role;
    }
}