[Vladimir]

Thanks for the information. It’s a strange effect. Roles editing core was not changed. So I can not repeat and explain it.

[Vladimir]

Try this variant:

add_filter('woocommerce_disable_admin_bar', '_wc_disable_admin_bar', 10, 1);
 
function _wc_disable_admin_bar($prevent_admin_access) {
    if ( !( current_user_can('data_entry') || 
            current_user_can('operator') ||
            current_user_can('manager') ) ) {
        return $prevent_admin_access;
    }
    return false;
}
 
add_filter('woocommerce_prevent_admin_access', '_wc_prevent_admin_access', 10, 1);
 
function _wc_prevent_admin_access($prevent_admin_access) {
    if ( !( current_user_can('data_entry') || 
            current_user_can('operator') ||
            current_user_can('manager') ) ) {
        return $prevent_admin_access;
    }
    return false;
}

[Vladimir]

Good. Thanks for the information.

You may use one complex expression for all roles, like this one:

if (!(current_user_can('role1') || current_user_can('role2'))) {
    return ....
}

[Vladimir]

It seems I found a problem with code. Replace ‘no’ to ‘false’. It should help.

add_filter('woocommerce_disable_admin_bar', '_wc_disable_admin_bar', 10, 1);
 
function _wc_disable_admin_bar($prevent_admin_access) {
 
    return false;
}

[Vladimir]

Ok. I will re-test this code myself.

[Vladimir]

While it worked for me as it is, try to add filter with lower priority value – 9 instead of 10.

[Vladimir]

Deactivate all plugins except WooCommerce and try. If that will help activate plugins back one by one. May be something else takes an effect.

[Vladimir]

The logic is correct. If it’s exactly the code you paste – it uses wrong quotes, it should use simple single quote character ' for all string constants.

[Vladimir]

Try to start from more simple code. Comment role checking. May be something wrong is there. Let’s it work for all users for begin.

[Vladimir]

Create ‘mu-plugins’ folder. File name does not matter. WordPress executes any .php file it find in this folder.
https://codex.wordpress.org/Must_Use_Plugins

[Vladimir]

Try another variant. Create .php file, open it in editor, start from <?php tag and insert there a code above, save it. Then put that file to the ‘wp-content/mu-plugins/’ folder (“must use” plugins). Will it help?

[Vladimir]

This post will help:
https://www.role-editor.com/woocommerce-admin-bar-access/

[Vladimir]

Thanks. It seems to be correct.
Please check, if your child theme is really active.
Do you use WooCommerce plugin?

[Vladimir]

Show the code after modification.

[Vladimir]

Hi,

This code shows admin top menu bar for the role:

add_action('wp_head', 'show_top_admin_menu_bar', 100);

function show_top_admin_menu_bar() {
  if (current_user_can('some_role')) {
      show_admin_bar(true);
  }
}

Pay attention for the 100 value of a priority parameter. With this value code should be executed after that other plugin did its work.

You may add it to the functions.php file of your active theme.

[Author]

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