The setting API, which its usage is being demonstrated in that code is meant to be use as a framework to create settings pages which result in update of values in options. Widget settings are is a somewhat more abstract level. They are stored in options, but there is no flexibility how they are stored, … Read more
The parameters have the same meaning, they are just named inconsistent. Both accept calls to a function. This can even be the same function. Here is a simple demo as a plugin. Download /* Plugin Name: Callback Demo Description: Demonstrating how a meta box and a menu page can take the same callback function. Version: … Read more
The error tells you what the problem is… PHP Warning: call_user_func_array() expects parameter 1 to be a valid callback, function … Your “callback” isn’t a function. It is a file. It doesn’t work that way. You will need a helper function to include a file. Something like: add_menu_page( ‘Private Messages’, ‘Private Messages’, ‘manage_options’, ‘message_admin’, ‘include_message_admin’, … Read more
I noticed your apwb_settings_page() function is adding the “Postal Pricing Settings” submenu using add_options_page(), and the documentation stated that: (bold formatting added by me) This function is a simple wrapper for a call to add_submenu_page(), passing the received arguments and specifying ‘options-general.php‘ as the $parent_slug argument. This means the new options page will be added … Read more
How can I highlight a top level dashboard menu item created for a custom taxonomy?
Run this once, it will be saved in database. You can run it once by adding it to functions.php and reloading the site once. $user = new WP_User( $user_id ); // the user id you want to have that capability $user->add_cap( ‘edit_others_posts’ ); // or any other capability that you want
Try using remove_menu_page(). https://codex.wordpress.org/Function_Reference/remove_menu_page
Dynamic admin submenu
In the admin back-end of a plugin, you can’t use the query_vars hook and the get_query_var built in function since the page itself is a query parameter. To get around this, I simply add a new query parameter to the end of your plugin page link called, ‘&pagenum=#” and I pull it out manually using: … Read more
It is possible. By default when you click on a tag link you visit that tags archive page. Just use that page. The following will show you how to add that link to the menu. If you need something more custom you will need some custom code, but the below will give you what you … Read more