WordPress主题选项页添加子菜单页失败求助

Hey there, let's get that submenu page working under your Theme Options menu! The problem here is with the parent slug you're using in add_submenu_page—you're targeting a custom post type archive URL instead of your actual theme options main menu slug.

Here's the breakdown of the mistake: #

Your main theme options menu is registered with the slug theme-options (from the 4th parameter of add_menu_page). But in your submenu code, you used edit.php?post_type=theme-options—that's the URL for a custom post type's list page, not your theme options parent menu.

Corrected Code #

First, keep your existing main menu registration (it's perfectly fine):

function add_new_menu_items() {
    add_menu_page( 
        "Theme Options", 
        "Theme Options", 
        "manage_options", 
        "theme-options", 
        "theme_options_page", 
        "", 
        99 
    );
}
add_action("admin_menu", "add_new_menu_items");

Now fix the submenu registration by using the correct parent slug (theme-options):

function my_plugin_menu() {
    add_submenu_page( 
        'theme-options', // Correct parent slug (matches main menu's slug)
        'Registrations', 
        'Registrations', 
        'manage_options', 
        'theme-options-registrations', 
        'wwpr_page_call' 
    );
}
add_action('admin_menu', 'my_plugin_menu');

Key Notes to Ensure It Works: #

• The first parameter of add_submenu_page must exactly match the slug of the parent menu (the 4th parameter from add_menu_page).
• Make sure your wwpr_page_call callback function is defined—this is what renders the content of your submenu page. For example:

  function wwpr_page_call() {
      // Always check user permissions first
      if (!current_user_can('manage_options')) {
          wp_die(__('You do not have sufficient permissions to access this page.'));
      }
      // Render your submenu content here
      echo '<div class="wrap"><h1>Registrations</h1><p>Your submenu page content goes here!</p></div>';
  }
  

• Both functions are hooked to admin_menu with the default priority (10), which works perfectly—WordPress will handle the parent-child association correctly via the matching slugs.

That should get your Registrations submenu showing up right under Theme Options in the WordPress admin sidebar!

内容的提问来源于stack exchange，提问作者Pityer