It is possible this is a duplicate, but I'm not really seeing how what I find when I search relates to my question.
I have created a hierarchical custom post type in a plugin. I'm trying to get automatically adding menu items for this custom post type, so that when I add a new entry, it will show up in a drop-down menu properly arranged according to the hierarchy. I'm ok with having to select a single entry, so long as all of its children properly populate in the menus without my having to manually add them each time I make a new entry.
I've been able to add an entry to the menu. But it doesn't add the children. I've tried the "automatically add new top-level entries" option, but it doesn't do anything either. I found something that said to add a filter to wp_get_nav_menu_items, but either I have it in the wrong spot (I have it in the custom post type definition class), or it's useless and doesn't do what I want.
It seems like this should be something relatively simple to do -- it looks like all the functionality would be present, I'm just not finding how to link it in.
Thanks for any help.
Editing to share entire file after edits suggested, just in case it helps.
<?php
// Exit if accessed directly
if ( ! defined( 'ABSPATH' ) ) exit;
if ( ! class_exists( 'Wrestleefedmanager_Match' ) ) :
class Wrestleefedmanager_Match {
/**
* Constructor
*/
public function __construct() {
// Hooking up our function to theme setup
add_action( 'init', array( $this, 'create_match_page_type' ) );
add_action( 'save_post', array( $this, 'save_match') );
add_filter ('template_include', array($this, 'display_match_template' ) );
add_filter( 'wp_get_nav_menu_items', array($this, 'match_locations_filter'), 10, 3 );
}
function match_locations_filter( $items, $menu, $args )
{
//$menuLocation = 'MENU_NAME';// Registered menu location
$customPostType = 'match';// Custom post type name
$newRootMenuName = 'Shows';// Name that will appear in the menu
// Do not show the customized list in the admin pages
// and customize only the chosen menu
if (is_admin() ) //|| !($menu->slug === $menuLocation)) {
{
return $items;
}
$rootMenuItemId = 47122;
// Adding a new root level menu item
$items[] = (object)[
'ID' => 0,
'title' => $newRootMenuName,
'url' => '#',
'menu_item_parent' => 0,
'post_parent' => 0,
'menu_order' => count($items) + 1,
'db_id' => $rootMenuItemId,
// These are not necessary for the functionality, but PHP warning will be thrown if not set
'type' => 'custom',
'object' => 'custom',
'object_id' => '',
'classes' => [],
];
// Querying custom posts
$customPosts = get_posts([
'post_type' => $customPostType,
'posts_per_page' => -1,
]);
// Adding menu item specific properties to `$post` objects
foreach ($customPosts as $i => $post) {
$post->title = $post->post_title;
$post->url = get_permalink($post);
$post->menu_item_parent = $post->post_parent ? $post->post_parent : $rootMenuItemId;
$post->menu_order = $i;
$post->db_id = $post->ID;
}
// Merge custom posts into menu items
$items = array_merge($items, $customPosts);
return $items;
/*
$child_items = array();
$menu_order = count($items);
$parent_item_id = 0;
foreach ( $items as $item ) {
if ( in_array('locations-menu', $item->classes) ){ //add this class to your menu item
$parent_item_id = $item->ID;
}
}
if($parent_item_id > 0){
foreach ( get_posts( 'post_type=matches&numberposts=-1' ) as $post ) {
$post->menu_item_parent = $parent_item_id;
$post->post_type = 'nav_menu_item';
$post->object = 'custom';
$post->type = 'custom';
$post->menu_order = ++$menu_order;
$post->title = $post->post_title;
$post->url = get_permalink( $post->ID );
array_push($child_items, $post);
}
}
return array_merge( $items, $child_items );*/
}
function display_match_template ($template_path) {
if ( get_post_type() == 'match' ) {
if ( is_single() ) {
// checks if the file exists in the theme first,
// otherwise serve the file from the plugin
if ( $theme_file = locate_template( array ( 'single-match.php' ) ) ) {
$template_path = $theme_file;
} else {
$template_path = plugin_dir_path( __FILE__ ) . '/single-match.php';
}
}
}
return $template_path;
}
// Our custom post type function
function create_match_page_type() {
$matchlabels = array(
'name' => _x( 'Matches', 'Post Type General Name'),
'singular_name' => _x( 'Match', 'Post Type Singular Name'),
'menu_name' => __( 'Matches'),
'parent_item_colon' => __( null),
'all_items' => __( 'All Matches'),
'view_item' => __( 'View Match'),
'add_new_item' => __( 'Add New Match'),
'add_new' => __( 'Add New'),
'edit_item' => __( 'Edit Match'),
'update_item' => __( 'Update Match'),
'search_items' => __( 'Search Matches'),
'not_found' => __( 'Not Found'),
'not_found_in_trash' => __( 'Not found in Trash'),
);
$matchargs = array(
'label' => __( 'Matches' ),
'description' => __( 'Matches' ),
'labels' => $matchlabels,
// Features this CPT supports in Post Editor
'supports' => array( 'title', 'editor', 'page-attributes',),
// You can associate this CPT with a taxonomy or custom taxonomy.
//'taxonomies' => array( 'weightclass', 'division', 'gender', 'title' ),
/* A hierarchical CPT is like Pages and can have
* Parent and child items. A non-hierarchical CPT
* is like Posts.
*/
'hierarchical' => true,
'public' => true,
'show_ui' => true,
'show_in_menu' => true,
'show_in_nav_menus' => true,
'show_in_admin_bar' => true,
'menu_position' => 19,
'can_export' => true,
'has_archive' => true,
'exclude_from_search' => false,
'publicly_queryable' => true,
'capability_type' => 'page',
'register_meta_box_cb' => array( $this, 'initialize_match_page_type'),
);
register_post_type( 'match', $matchargs);
}
function save_match(){
global $post;
update_post_meta($post->ID, "competitors", $_POST["match_competitors"]);
update_post_meta($post->ID, "referee", $_POST["match_referee"]);
update_post_meta($post->ID, "rating", $_POST["match_rating"]);
update_post_meta($post->ID, "victors", $_POST["match_victors"]);
update_post_meta($post->ID, "time", $_POST["match_time"]);
update_post_meta($post->ID, "finisher", $_POST["match_finisher"]);
update_post_meta($post->ID, "title", $_POST["match_title"]);
update_post_meta($post->ID, "titleupdate", $_POST["match_title_result"]);
}
function initialize_match_page_type() {
add_meta_box("competitors", "Competitors", array( $this, 'match_competitors'), "match", "normal", "low");
add_meta_box("results", "Results", array( $this, 'match_results'), "match", "normal", "low");
add_meta_box("championships", "Title Updates", array($this, 'match_titles'), "match", "normal", "low");
add_meta_box("referee", "Referee", array( $this, 'match_referee'), "match", "side", "low");
add_meta_box("rating", "Rating", array( $this, 'match_rating'), "match", "side", "low");
add_meta_box("weightclass", "Weight Class", array( $this, 'match_weightclass'), "match", "side", "low");
add_meta_box("gender", "Gender", array( $this, 'match_gender'), "match", "side", "low");
add_meta_box("division", "Company/Division", array( $this, 'match_division'), "match", "side", "low");
}
function match_titles()
{
global $post;
$custom = get_post_custom($post->ID);
$belts = $custom["title"][0];
$result = $custom["titleupdate"][0];
?>
<table>
<tr><th>Title</th><th>Result</th></tr>
<tr><td> <?php
efed_select_from_entries('match_title', 'championship', $belts); ?>
</td><td>
<select name='match_title_result'>
<option> </option>
<option value="defense" <?php if ($result == "defense") echo 'selected' ?>>Successful Defense</option>
<option value="newchamp" <?php if ($result == "newchamp") echo 'selected' ?>>New Champion</option>
<option value="vacate" <?php if ($result == "vacate") echo 'selected' ?>>Vacated</option>
</select>
</td>
</tr>
</table>
<?php
}
function match_weightclass()
{
global $post;
$custom = get_post_custom($post->ID);
$wc = $custom["weightclass"][0];
//echo 'Saved value : ' . $wc . '<br />';
efed_select_from_entries('match_weightclass', 'weightclasses', $wc);
}
function match_gender()
{
global $post;
$custom = get_post_custom($post->ID);
$gender = $custom["gender"][0];
efed_select_from_entries('match_gender', 'genders', $gender);
}
function match_division()
{
global $post;
$custom = get_post_custom($post->ID);
$div = $custom["division"][0];
efed_select_from_entries('match_division', 'feds', $div, true, true);
}
function match_competitors() {
global $post;
$custom = get_post_custom($post->ID);
$competitors = $custom["competitors"][0];
efed_select_from_entries('match_competitors', 'workers', $competitors, true);
}
function match_results() {
global $post;
$custom = get_post_custom($post->ID);
$victors = $custom["victors"][0];
$time = $custom["time"][0];
$finisher = $custom["finisher"][0];
$titledefense = $custom["titledefense"][0];
?>
<table>
<tr><td><label>Victor(s):</label></td><td><?php efed_select_from_entries('match_victors', 'workers', $victors, true);?></td></tr>
<tr><td><label>Time:</label></td><td><input name="match_time" type="text" style="width:100%;box-sizing:border-box;" value="<?php echo $time; ?>" /></td></tr>
<tr><td><label>Finish:</label></td><td><input name="match_finisher" type="text" style="width:100%;box-sizing:border-box;" value="<?php echo $finisher; ?>" /></td></tr></table>
<?php
}
function match_referee() {
global $post;
$custom = get_post_custom($post->ID);
$referee = $custom["referee"][0];
?>
<input name="match_referee" type="text" value="<?php echo $referee; ?>" />
<?php
}
function match_rating() {
global $post;
$custom = get_post_custom($post->ID);
$rating = $custom["rating"][0];
?>
<input name="match_rating" type="text" value="<?php echo $rating; ?>" />
<?php
}
}
endif;
Probably there are other possible solutions as well, but you can definitely do this with the wp_get_nav_menu_items filter. Below is a sample code that uses this hook to alter a menu. You can insert it to the main file of your plugin, but change the parameters at the top of the callback to match your needs.
Basically this creates a “virtual” top level menu item, and inserts the custom post entries under this menu item. Eventually you could modify it to use one of the customs posts as the top level item, and have the rest listed underneath. Also, the good thing is that based on the menu_item_parent and db_id properties it keeps the entire hierarchy.
/**
* Blend custom posts into a nav menu
*/
add_filter('wp_get_nav_menu_items', function ($items, $menu, $args) {
// Change these parameters
$menuLocation = 'MENU_NAME';// Registered menu location
$customPostType = 'CUSTOM_POST_TYPE';// Custom post type name
$newRootMenuName = 'MY_CUSTOM_POSTS';// Name that will appear in the menu
// Do not show the customized list in the admin pages
// and customize only the choosen menu
if (is_admin() || !($menu->slug === $menuLocation)) {
return $items;
}
$rootMenuItemId = PHP_INT_MAX;
// Adding a new root level menu item
$items[] = (object)[
'ID' => 0,
'title' => $newRootMenuName,
'url' => '#',
'menu_item_parent' => 0,
'post_parent' => 0,
'menu_order' => count($items) + 1,
'db_id' => $rootMenuItemId,
// These are not necessary for the functionality, but PHP warning will be thrown if not set
'type' => 'custom',
'object' => 'custom',
'object_id' => '',
'classes' => [],
'target' => '',
'xfn' => '',
];
// Querying custom posts
$customPosts = get_posts([
'post_type' => $customPostType,
'posts_per_page' => -1,
]);
$max_menu_order = 0;
foreach ($items as $item) {
$max_menu_order = max($max_menu_order,$item->menu_order);
}
// Adding menu item specific properties to `$post` objects
foreach ($customPosts as $i => $post) {
$post->title = $post->post_title;
$post->url = get_permalink($post);
$post->menu_item_parent = $post->post_parent ? $post->post_parent : $rootMenuItemId;
$post->menu_order = $max_menu_order + 1 + $i;
$post->db_id = $post->ID;
}
// Merge custom posts into menu items
$items = array_merge($items, $customPosts);
return $items;
}, null, 3);