custom-metadata example

Property.php

<?php

namespace Pyxl\One\Models\FieldGroups;

use Pyxl\One\Models\PostTypes\Property as CPT;

class Property {
	public static function init() {
		$class = new self;
		add_action( 'custom_metadata_manager_init_metadata', [ $class, 'register' ] );
	}

	public function register() {

		x_add_metadata_group(
			'pyxl_property_fields',
			CPT::SLUG,
			array(
				'label'       => 'Group for Property',
				'description' => "Here's a group with a description!",
			)
		);

		// adds a text field to the first group
		// See wp-content/plugins/custom-metadata/custom_metadata.php
		x_add_metadata_field(
			'x_fieldName1',
			CPT::SLUG,
			array(
				'group'          => 'pyxl_property_fields', // the group name
				'label'          => 'Text Field', // field label
				'field_type'     => 'text', //  text, checkbox, radio, select, image
				'description'    => 'This is field #1. It\'s a simple text field.', // description for the field
				'placeholder'    => '',
				'display_column' => true, // show this field in the column listings
			)
		);
	}
}