Admin page submenu not display

Jacob

I am trying to add a submenu page to add extra functionality to a theme. I have used the admin_menu action hook to attach the submenu page. I am not sure what happens but my submenu is not displaying.

add_action( 'admin_menu', array($this, 'admin_menu_page') );

public function admin_menu_page()
{
    add_submenu_page( 
        'option-general.php', 
        'My Sub Menu', 
        'My Sub Menu', 
        'manage_options', 
        'submenu-page', 
        array($this, 'sub_menu_page_callback')
    );
}

I am not sure what i have missed. This code should display at least My Sub Menu under Settings menu.

James

Hi, I am not sure if it is a typo but you have't added the parent menu slug name correctly.
You need to add options-general.php instead of option-general.php in your admin_menu_page method to display your submenu under settings like Settings > My Sub Menu.

add_submenu_page( 
    'options-general.php', 
    'My Sub Menu', 
    'My Sub Menu', 
    'manage_options', 
    'submenu-page', 
    array($this, 'sub_menu_page_callback')
);

Take a look on the document to add sub menu - https://developer.wordpress.org/reference/functions/add_submenu_page/

Jacob

Oh shit, you are right. It was a typo issue that's why my submenu was not displaying. Now it is working fine.