免责声明：尝试后，这对我来说似乎不再是一个问题，因为至少对我来说，它只适用于我的WP 3.9.2安装。但找不到相应的bug追踪器。
我有一个小插件来测试这一点，这可能会对某些人有所帮助。但正如我在上面的免责声明中所说，我无法在当前的wordpress安装中重现这个问题。我已经将插件分为四个文件，它们一起放在插件目录中的一个目录中。
plugin-cpt_menu_hierarchy.php:
<?php
defined( \'ABSPATH\' ) OR exit;
/**
* Plugin Name: CPT Menu Hierarchy Fix?
* Description: CPT Menu Hierarchy Fix?
* Author: ialocin
* Author URL: http://wordpress.stackexchange.com/users/22534/ialocin
* Plugin URL: http://wordpress.stackexchange.com/q/13308/22534
*/
// registering nonsense post type
include \'include-register_post_type.php\';
// adding meta box to nosense custom post type
include \'include-cpt_parent_meta_box.php\';
// menu highlighting fix
include \'include-menu_highlighting.php\';
include-register_post_type.php:
<?php
defined( \'ABSPATH\' ) OR exit;
// See: http://codex.wordpress.org/Function_Reference/register_post_type
add_action( \'init\', \'wpse13308_basic_reigister_post_type\');
function wpse13308_basic_reigister_post_type() {
$args = array(
\'public\' => true,
\'label\' => \'Nonsense\'
);
register_post_type( \'nonsense\', $args );
}
include-cpt_parent_meta_box.php:
<?php
defined( \'ABSPATH\' ) OR exit;
// pretty much like @bainternet\'s answer
// Add Meta Box
add_action( \'add_meta_boxes\', \'nonsense_add_meta_box\' );
function nonsense_add_meta_box() {
add_meta_box(
\'nonsense\',
__( \'Nonsense parent\' ),
\'nonsense_inner_meta_box\',
\'nonsense\'
);
}
// Meta Box Content
function nonsense_inner_meta_box() {
global $post;
wp_nonce_field(
plugin_basename( __FILE__ ),
\'nonsense_inner_meta_box\'
);
echo \'Parent Page: \';
$mypages = get_pages();
echo \'<select name="cpt_parent">\';
foreach($mypages as $page){
echo \'<option value="\'.$page->ID.\'"\';
if ($page->ID == $post->post_parent) {echo \' selected\';}
echo \'>\'.$page->post_title.\'</option>\';
}
echo \'</select>\';
}
// Save Data From Meta Box
add_action( \'wp_insert_post_data\', \'nonsense_save_meta_box_data\' );
function nonsense_save_meta_box_data( $data, $postarr ) {
global $post;
if (
! wp_verify_nonce(
$_POST[\'nonsense_inner_meta_box\'],
plugin_basename( __FILE__ )
)
) {
return $data;
}
if (
defined(\'DOING_AUTOSAVE\')
&& DOING_AUTOSAVE
) {
return $data;
}
if ( $post->post_type == \'nonsense\' ) {
$data[\'post_parent\'] = $_POST[\'cpt_parent\'];
}
return $data;
}
include-menu_highlighting.php:
<?php
defined( \'ABSPATH\' ) OR exit;
// altering WordPress\' nav menu classes via »nav_menu_css_class« filter
add_filter( \'nav_menu_css_class\', \'wpse13308_fix_nav_menu_highlighting\', 10, 2 );
function wpse13308_fix_nav_menu_highlighting( $classes, $item ) {
// data of the current post
global $post;
// setting up some data from the current post
$current_post_post_type = $post->post_type;
$current_post_parent_id = $post->post_parent;
// id of the post the current menu item represents
$current_menu_item_id = $item->object_id;
// do this for a certain post type
if( $current_post_post_type == \'nonsense\' ) {
// remove unwanted highlighting class via array_filter and callback
// http://php.net/manual/de/function.array-filter.php
$classes = array_filter(
$classes,
\'wpse13308_remove_highlighting_classes\'
);
// when the parents id equals the menu items id, we want to
// highlight the parent menu item, so we check for:
if( $current_post_parent_id == $current_menu_item_id ) {
// use the css class used for highlighting
$classes[] = \'replace-with-css-class\';
}
}
return $classes;
}
// callback to remove highlighting classes
function wpse13308_remove_highlighting_classes( $class ) {
return
(
// use the class(es) you need, overview over nav menu item css classes:
// http://codex.wordpress.org/Function_Reference/wp_nav_menu#Menu_Item_CSS_Classes
$class == \'highlight-class\'
// uncomment next line if you want to check for more then one class
// repeat the line if you want to check for a third, fourth and so on
// || $class == \'replace-with-css-class\'
)
? false
: true
;
}
这是一个有点泛化的代码示例
