I want to create a sub config from some page on admin panel, eg:
I’ve set config menu this way:
add_menu_page( 'E+', 'CRE+', 8, 'cr_e_plus_user_config', 'cr_e_plus_user_config');
add_submenu_page( 'cr_e_plus_user_config', 'E+', 'Configurations', 8, 'cr_e_plus_user_config', 'cr_e_plus_user_config');
From Configurations page, I need to load another page when I click certain link. Now, I don’t want this new page to be listed on menu, because it will need certain parameter before I can show it.
Admin pages are basically spoken nothing else then a hook to a function, so it is technically not a problem to add your own pages without making use of the menu.
I was not aware of an API function that allows you to register own pages with ease, but there is a helper function in WordPress you can make use of:
get_plugin_page_hookname()(undocumented function). Next to that, the hook needs to be registered in a global registry of all page hooks ($GLOBALS['_registered_pages']) so that it’s rated valid when the page is requested.I’ve wrapped that in some sample code, just save it into your
/wp-content/mu-pluginsfolder: admin_page_demo.php (WordPress MU-Plugin Example)In there you can find a function
register_admin_page()that can register any callback you need per theadmin_menuhook. That’s the important one, compare to Adding Administration Menus (WordPress Codex).The function returns the URL of the new admin page. You wrote that you might need to add more parameters, so I thought that might be handy.
For the demo page I hardcoded into that example, the URL is:
/wp-admin/options-general.php?page=adminpagedemo_demo_page.Keep in mind, that you need to check for security for that page on your own because WordPress does not. Something like
might be a helpful additional hint.