Image as radio buttons
add_action( 'cmb2_admin_init', 'cmb2_radio_image_metabox' );
function cmb2_radio_image_metabox() {
$prefix = 'yourprefix_demo_';
$cmb_demo = new_cmb2_box( array(
'id' => $prefix . 'metabox',
'title' => __( 'Test Metabox', 'cmb2' ),
'object_types' => array( 'page', 'post' ), // Post type
// 'show_on_cb' => 'yourprefix_show_if_front_page', // function should return a bool value
// 'context' => 'normal',
// 'priority' => 'high',
// 'show_names' => true, // Show field names on the left
// 'cmb_styles' => false, // false to disable the CMB stylesheet
// 'closed' => true, // true to keep the metabox closed by default
) );
$cmb_demo->add_field( array(
'name' => __( 'Test Radio Image', 'cmb2' ),
'desc' => __( 'field description (optional)', 'cmb2' ),
'id' => $prefix . 'radioimg',
'type' => 'radio_image',
'options' => array(
'full-width' => __('Full Width', 'cmb2'),
'sidebar-left' => __('Left Sidebar', 'cmb2'),
'sidebar-right' => __('Right Sidebar', 'cmb2'),
),
'images_path' => get_template_directory_uri(),
'images' => array(
'full-width' => 'images/full-width.png',
'sidebar-left' => 'images/sidebar-left.png',
'sidebar-right' => 'images/sidebar-right.png',
)
) );
}