* Bootstraps the CMB2 process
* @category WordPress_Plugin
* Function to encapsulate the CMB2 bootstrap process.
function cmb2_bootstrap() {
* Fires on the admin side when CMB2 is included/loaded.
* In most cases, this should be used to add metaboxes. See example-functions.php
do_action( 'cmb2_admin_init' );
* Fires when CMB2 is included/loaded
* Can be used to add metaboxes if needed on the front-end or WP-API (or the front and backend).
do_action( 'cmb2_init' );
* For back-compat. Does the dirty-work of instantiating all the
* CMB2 instances for the cmb2_meta_boxes filter
$cmb_config_arrays = apply_filters( 'cmb2_meta_boxes', array() );
foreach ( (array) $cmb_config_arrays as $cmb_config ) {
* Fires after all CMB2 instances are created
do_action( 'cmb2_init_before_hookup' );
* Get all created metaboxes, and instantiate CMB2_Hookup
* on metaboxes which require it.
foreach ( CMB2_Boxes::get_all() as $cmb ) {
* Initiates the box "hookup" into WordPress.
* Unless the 'hookup' box property is `false`, the box will be hooked in as
* a post/user/comment/option/term box.
* And if the 'show_in_rest' box property is set, the box will be hooked
* into the CMB2 REST API.
* The dynamic portion of the hook name, $cmb->cmb_id, is the box id.
* @param array $cmb The CMB2 object to hookup.
do_action( "cmb2_init_hookup_{$cmb->cmb_id}", $cmb );
* Fires after CMB2 initiation process has been completed
do_action( 'cmb2_after_init' );
/* End. That's it, folks! */