The completed template configuration for our Hello World tutorial

hello-world.php

<?php

namespace GFPDF\Templates\Config;

use GFPDF\Helper\Helper_Interface_Config;

/**
 * Configuration file for hello-world.php
 */

/* Exit if accessed directly */
if ( ! defined('ABSPATH') ) {
	exit;
}

/**
 * The configuration class name should be the same name as the PHP template file name with the following modifications:
 *     The file extension is omitted (.php)
 *     Any hyphens (-) should be replaced with underscores (_)
 *     The class name should be in sentence case (the first character of each word separated by a hyphen (-) or underscore (_) should be uppercase)
 *
 * For instance, a template called core-simple.php or core_simple.php would have a configuration class of "Core_Simple"
 *
 * This naming convention is very important, otherwise the software cannot correctly load the configuration
 */
class Hello_World implements Helper_Interface_Config {

	/**
	 * Return the templates configuration structure which control what extra fields will be shown in the "Template" tab when configuring a form's PDF.
	 *
	 * @return array The array, split into core components and custom fields
	 *
	 * @since 4.0
	 */
	public function configuration() {

		return array(
			'core' => array(
				'footer'           => true,
				'background_image' => true,
			),

			'fields' => array(
				'world_show_meta_data' => array(
					'id' => 'world_show_meta_data',
					'name' => __( 'Show Meta Data', 'world-pdf-template'),
					'desc' => __( 'When enabled the user IP, timestamp, user agent and source URL will be included in the PDF.', 'world-pdf-template' ),
					'type' => 'radio',
					'options' => array(
						'Yes'     => __( 'Yes', 'world-pdf-template' ),
						'No'      => __( 'No', 'world-pdf-template' ),
					),
					'std' => __( 'No', 'world-pdf-template' )
				)
			),
		);
	}

}