<?php
if( ! defined( 'ABSPATH' ) ) exit; // Exit if accessed directly
if( ! class_exists('acf_form_nav_menu') ) :
class acf_form_nav_menu {
/*
* __construct
*
* This function will setup the class functionality
*
* @type function
* @date 5/03/2014
* @since 5.0.0
*
* @param n/a
* @return n/a
*/
function __construct() {
// actions
add_action('admin_enqueue_scripts', array($this, 'admin_enqueue_scripts'));
add_action('wp_update_nav_menu', array($this, 'update_nav_menu'));
add_action('acf/validate_save_post', array($this, 'acf_validate_save_post'), 5);
add_action('wp_nav_menu_item_custom_fields', array($this, 'wp_nav_menu_item_custom_fields'), 10, 5);
// filters
add_filter('wp_get_nav_menu_items', array($this, 'wp_get_nav_menu_items'), 10, 3);
add_filter('wp_edit_nav_menu_walker', array($this, 'wp_edit_nav_menu_walker'), 10, 2);
}
/*
* admin_enqueue_scripts
*
* This action is run after post query but before any admin script / head actions.
* It is a good place to register all actions.
*
* @type action (admin_enqueue_scripts)
* @date 26/01/13
* @since 3.6.0
*
* @param N/A
* @return N/A
*/
function admin_enqueue_scripts() {
// validate screen
if( !acf_is_screen('nav-menus') ) return;
// load acf scripts
acf_enqueue_scripts();
// actions
add_action('admin_footer', array($this, 'admin_footer'), 1);
}
/**
* wp_nav_menu_item_custom_fields
*
* description
*
* @date 30/7/18
* @since 5.6.9
*
* @param type $var Description. Default.
* @return type Description.
*/
function wp_nav_menu_item_custom_fields( $item_id, $item, $depth, $args, $id = '' ) {
// vars
$prefix = "menu-item-acf[$item_id]";
// get field groups
$field_groups = acf_get_field_groups(array(
'nav_menu_item' => $item->type,
'nav_menu_item_id' => $item_id,
'nav_menu_item_depth' => $depth
));
// render
if( !empty($field_groups) ) {
// open
echo '<div class="acf-menu-item-fields acf-fields -clear">';
// loop
foreach( $field_groups as $field_group ) {
// load fields
$fields = acf_get_fields( $field_group );
// bail if not fields
if( empty($fields) ) continue;
// change prefix
acf_prefix_fields( $fields, $prefix );
// render
acf_render_fields( $fields, $item_id, 'div', $field_group['instruction_placement'] );
}
// close
echo '</div>';
// Trigger append for newly created menu item (via AJAX)
if( acf_is_ajax('add-menu-item') ): ?>
<script type="text/javascript">
(function($) {
acf.doAction('append', $('#menu-item-settings-<?php echo $item_id; ?>') );
})(jQuery);
</script>
<?php endif;
}
}
/*
* update_nav_menu
*
* description
*
* @type function
* @date 26/5/17
* @since 5.6.0
*
* @param $post_id (int)
* @return $post_id (int)
*/
function update_nav_menu( $menu_id ) {
// vars
$post_id = acf_get_term_post_id( 'nav_menu', $menu_id );
// verify and remove nonce
if( !acf_verify_nonce('nav_menu') ) return $menu_id;
// validate and show errors
acf_validate_save_post( true );
// save
acf_save_post( $post_id );
// save nav menu items
$this->update_nav_menu_items( $menu_id );
}
/*
* update_nav_menu_items
*
* description
*
* @type function
* @date 26/5/17
* @since 5.6.0
*
* @param $post_id (int)
* @return $post_id (int)
*/
function update_nav_menu_items( $menu_id ) {
// bail ealry if not set
if( empty($_POST['menu-item-acf']) ) return;
// loop
foreach( $_POST['menu-item-acf'] as $post_id => $values ) {
acf_save_post( $post_id, $values );
}
}
/**
* wp_get_nav_menu_items
*
* WordPress does not provide an easy way to find the current menu being edited.
* This function listens to when a menu's items are loaded and stores the menu.
* Needed on nav-menus.php page for new menu with no items
*
* @date 23/2/18
* @since 5.6.9
*
* @param type $var Description. Default.
* @return type Description.
*/
function wp_get_nav_menu_items( $items, $menu, $args ) {
acf_set_data('nav_menu_id', $menu->term_id);
return $items;
}
/*
* wp_edit_nav_menu_walker
*
* description
*
* @type function
* @date 26/5/17
* @since 5.6.0
*
* @param $post_id (int)
* @return $post_id (int)
*/
function wp_edit_nav_menu_walker( $class, $menu_id = 0 ) {
// update data (needed for ajax location rules to work)
acf_set_data('nav_menu_id', $menu_id);
// include walker
if( class_exists('Walker_Nav_Menu_Edit') ) {
acf_include('includes/walkers/class-acf-walker-nav-menu-edit.php');
}
// return
return 'ACF_Walker_Nav_Menu_Edit';
}
/*
* acf_validate_save_post
*
* This function will loop over $_POST data and validate
*
* @type action 'acf/validate_save_post' 5
* @date 7/09/2016
* @since 5.4.0
*
* @param n/a
* @return n/a
*/
function acf_validate_save_post() {
// bail ealry if not set
if( empty($_POST['menu-item-acf']) ) return;
// loop
foreach( $_POST['menu-item-acf'] as $post_id => $values ) {
// vars
$prefix = 'menu-item-acf['.$post_id.']';
// validate
acf_validate_values( $values, $prefix );
}
}
/*
* admin_footer
*
* This function will add some custom HTML to the footer of the edit page
*
* @type function
* @date 11/06/2014
* @since 5.0.0
*
* @param n/a
* @return n/a
*/
function admin_footer() {
// vars
$nav_menu_id = acf_get_data('nav_menu_id');
$post_id = acf_get_term_post_id( 'nav_menu', $nav_menu_id );
// get field groups
$field_groups = acf_get_field_groups(array(
'nav_menu' => $nav_menu_id
));
?>
<div id="tmpl-acf-menu-settings" style="display: none;">
<?php
// data (always needed to save nav menu items)
acf_form_data(array(
'screen' => 'nav_menu',
'post_id' => $post_id,
'ajax' => 1
));
// render
if( !empty($field_groups) ) {
// loop
foreach( $field_groups as $field_group ) {
$fields = acf_get_fields( $field_group );
echo '<div class="acf-menu-settings -'.$field_group['style'].'">';
echo '<h2>' . $field_group['title'] . '</h2>';
echo '<div class="acf-fields -left -clear">';
acf_render_fields( $fields, $post_id, 'div', $field_group['instruction_placement'] );
echo '</div>';
echo '</div>';
}
}
?>
</div>
<script type="text/javascript">
(function($) {
// append html
$('#post-body-content').append( $('#tmpl-acf-menu-settings').html() );
// avoid WP over-writing $_POST data
// - https://core.trac.wordpress.org/ticket/41502#ticket
$(document).on('submit', '#update-nav-menu', function() {
// vars
var $form = $(this);
var $input = $('input[name="nav-menu-data"]');
// decode json
var json = $form.serializeArray();
var json2 = [];
// loop
$.each( json, function( i, pair ) {
// avoid nesting (unlike WP)
if( pair.name === 'nav-menu-data' ) return;
// bail early if is 'acf[' input
if( pair.name.indexOf('acf[') > -1 ) return;
// append
json2.push( pair );
});
// update
$input.val( JSON.stringify(json2) );
});
})(jQuery);
</script>
<?php
}
}
acf_new_instance('acf_form_nav_menu');
endif;
?>