Crear metadata editable en la pagina contacto

jpb_register_meta_box.php

<?php

function jpb_register_meta_box() {

	if (!class_exists('RW_Meta_Box') or !is_admin()) {
		return;
	}

	$post_id = $current_post = false;

	if (!empty($_POST['post_ID']) or !empty($_GET['post_ID'])) {
		$post_id = (int) (!empty($_POST['post_ID']) ? $_POST['post_ID'] : $_GET['post_ID']);

		if ($post_id > 0) {
			$current_post = get_post($post_id);
		}
	}

	$meta_box = array();

	if (is_object($current_post) && $current_post->post_name == 'contacto') {

		$meta_box[] = array(
						'id' => 'contact_info',
						'title' => 'Informacion de Contacto',
						'pages' => array('page'),
						'context' => 'normal',
						'priority' => 'high',
						'fields' => array(
										array(
														'name' => 'Coordenadas Google Maps',
														'id' => 'map_coord',
														'type' => 'text',
										),
										array(
														'name' => 'Tel&eacute;fonos',
														'id' => 'phones',
														'clone' => true,
														'type' => 'text',
										),
										array(
														'name' => 'Correos',
														'id' => 'mails',
														'clone' => true,
														'type' => 'text',
										)
		));
		$meta_box[] = array(
						'id' => 'social_networks',
						'title' => 'Redes Sociales',
						'pages' => array('page'),
						'context' => 'normal',
						'priority' => 'high',
						'fields' => array(
										array(
														'name' => 'Facebook',
														'id' => 'facebook',
														'type' => 'text',
										),
										array(
														'name' => 'Twitter',
														'id' => 'twitter',
														'type' => 'text',
										),
										array(
														'name' => 'Google+',
														'id' => 'google_plus',
														'type' => 'text',
										),
										array(
														'name' => 'Linkedin',
														'id' => 'linkedin',
														'type' => 'text',
										),
										array(
														'name' => 'Instagram',
														'id' => 'instagram',
														'type' => 'text',
										)
		));
	}

	if (is_array($meta_box) && !empty($meta_box)) {
		foreach ($meta_box as $value) {
			new RW_Meta_Box($value);
		}
	}
}

add_action('admin_init', 'jpb_register_meta_box');