cmb2.php

<?php
/**
 * Custom Fields with CMB2
 *
 * @package      CoreFunctionality
 * @author       Bill Erickson
 * @since        1.0.0
 * @license      GPL-2.0+
**/

/**
 * Define the metabox and field configurations.
 */
function be_register_cmb2_metaboxes() {

	/**
	 * Initiate the metabox
	 */
	$cmb = new_cmb2_box( array(
		'id'            => 'be_plugins_metabox',
		'title'         => __( 'Plugins' ),
		'object_types'  => array( 'page' ),
		'show_on'      => array( 'key' => 'page-template', 'value' => 'templates/plugins-cmb2.php' ),
		'context'       => 'normal',
		'priority'      => 'high',
		'show_names'    => true, // Show field names on the left
		// 'cmb_styles' => false, // false to disable the CMB stylesheet
		// 'closed'     => true, // Keep the metabox closed by default
	) );

	$group_field_id = $cmb->add_field( array(
		'id' => 'be_plugins',
		'type' => 'group',
		'options' => array(
			'group_title' => __( 'Plugin {#}' ),
			'add_button'  => __( 'Add Another Plugin' ),
			'remove_button' => __( 'Remove Plugin' ),
			'sortable' => true,
		)
	));

	$cmb->add_group_field( $group_field_id, array(
		'name' => 'Name',
		'id'   => 'name',
		'type'  => 'text',
	));

	$cmb->add_group_field( $group_field_id, array(
		'name' => 'URL',
		'id'   => 'url',
		'type' => 'text',
	));

	$cmb->add_group_field( $group_field_id, array(
		'name' => 'Icon',
		'id'   => 'icon',
		'type' => 'text',
	));

	$cmb->add_group_field( $group_field_id, array(
		'name' => 'Summary',
		'id'   => 'summary',
		'type' => 'textarea',
	));

	$cmb->add_group_field( $group_field_id, array(
		'name' => 'Categories',
		'id'   => 'categories',
		'type' => 'multicheck_inline',
		'options' => ea_plugin_categories(),
	));

}
add_action( 'cmb2_admin_init', 'be_register_cmb2_metaboxes' );


/**
 * Plugin Categories
 *
 */
function ea_plugin_categories() {

	return array(
		'genesis' => 'Genesis',
		'developer' => 'Developer',
		'cms' => 'CMS',
		'social' => 'Social',
		'media'  => 'Media',
		'widget' => 'Widget',
		'analytics' => 'Analytics'
	);
}