mb_cardinal_contacts

<?php

/*
 * REGISTER THE TAXONOMY
 */

//
function cardinalpm_contacts_register_taxonomy()
{

    $args = array(
        'label'                => esc_html__('Contacts', 'text-domain'),
        'labels'               => array(
            'menu_name'                  => esc_html__('Contacts', 'text-domain'),
            'all_items'                  => esc_html__('All Contacts', 'text-domain'),
            'edit_item'                  => esc_html__('Edit Contact', 'text-domain'),
            'view_item'                  => esc_html__('View Contact', 'text-domain'),
            'update_item'                => esc_html__('Update Contact', 'text-domain'),
            'add_new_item'               => esc_html__('Add new Contact', 'text-domain'),
            'new_item_name'              => esc_html__('New Contact', 'text-domain'),
            'parent_item'                => esc_html__('Parent Contact', 'text-domain'),
            'parent_item_colon'          => esc_html__('Parent Contact:', 'text-domain'),
            'search_items'               => esc_html__('Search Contacts', 'text-domain'),
            'popular_items'              => esc_html__('Popular Contacts', 'text-domain'),
            'separate_items_with_commas' => esc_html__('Separate Contacts with commas', 'text-domain'),
            'add_or_remove_items'        => esc_html__('Add or remove Contacts', 'text-domain'),
            'choose_from_most_used'      => esc_html__('Choose most used Contacts', 'text-domain'),
            'not_found'                  => esc_html__('No Contacts found', 'text-domain'),
            'name'                       => esc_html__('Contacts', 'text-domain'),
            'singular_name'              => esc_html__('Contact', 'text-domain'),
        ),
        'public'               => true,
        'show_ui'              => true,
        'show_in_menu'         => true,
        'show_in_nav_menus'    => true,
        'show_tagcloud'        => false,
        'show_in_quick_edit'   => true,
        'show_admin_column'    => true,
        'show_in_rest'         => true,
        'hierarchical'         => false,
        'query_var'            => true,
        'sort'                 => false,
        'rewrite_no_front'     => false,
        'rewrite_hierarchical' => false,
        'rewrite'              => true,
    );

    register_taxonomy('contact', array('cardinal-job'), $args);
}
add_action('init', 'cardinalpm_contacts_register_taxonomy', 0);

/*
 * DEFINE CUSTOM TABLE
 */

add_action('init', 'create_table_for_contacts');
function create_table_for_contacts()
{
    if (!class_exists('MB_Custom_Table_API')) {
        return;
    }
    MB_Custom_Table_API::create('cardinal_contacts', array(
        'contact_email'    => 'VARCHAR(240) NOT NULL',
        'contact_phone'    => 'TEXT NOT NULL',
        'related_customer' => 'INT(11) NOT NULL',
        'contact_notes'    => 'TEXT NOT NULL',
    ));
}

/*
 * THE ACTUAL META BOXES
 */

//
add_filter('rwmb_meta_boxes', 'contactdetails_register_meta_boxes');

function contactdetails_register_meta_boxes($meta_boxes)
{
    $prefix = '';

    $meta_boxes[] = array(
        'title'        => esc_html__('Contact Details', 'text-domain'),
        'id'           => 'contact-details',
        'storage_type' => 'custom_table',
        'table'        => 'cardinal_contacts',
        'fields'       => array(
            array(
                'id'    => 'contact_email',
                'name'  => esc_html__('Email', 'text-domain'),
                'type'  => 'email',
                'class' => 'wide',
            ),
            array(
                'id'    => 'contact_phone',
                'type'  => 'text',
                'name'  => esc_html__('Phone', 'text-domain'),
                'class' => 'wide',
            ),
            array(
                'id'         => 'related_customer',
                'type'       => 'taxonomy_advanced',
                'name'       => esc_html__('Company', 'text-domain'),
                'taxonomy'   => 'customer',
                'field_type' => 'select_advanced',
                'add_new'    => true,
            ),
            array(
                'id'   => 'contact_notes',
                'type' => 'textarea',
                'name' => esc_html__('Notes', 'text-domain'),
            ),
        ),
        'taxonomies'   => 'contact',
        'autocomplete' => 'off',
    );

    return $meta_boxes;
}