Customize Admin Users Screen based on Role

Question

I've added a role of "Customer" and I am working on customizing the Users Screen for that role. What I'd like to do is customize columns based on that particular role.

Note:

For example, take a look at the screenshot. How would I remove the reference to the posts column for only the customer role?

Answer 1

Manage Columns

It's pretty straight forward using the manage_{post-type-name}_columns filter: Just switch per $capability and unset what you don't need in the $post_columns array.

function wpse19435_manage_columns( $posts_columns )
{
    // First role: add a column - take a look at the second function
    if ( current_user_can( $capability_admin ) )
    {
        $posts_columns['some_column_name'] = _x( 'Whatever', 'column name' );
    }
    // second role: remove a column
    elseif ( current_user_can( $capability_other_role ) )
    {
        unset( $posts_columns['comments'] );
    }
    // default
    else
    {
        // do stuff for all other roles
    }

    return $posts_columns;
}
add_filter( 'manage_{post-type-name}_columns', 'wpse19435_manage_columns' );

Add a column

function wpse19435_manage_single_column( $column_name, $id ) 
{
    switch( $column_name ) 
    {
        case 'some_column_name' :
            // do stuff
            break;

        default :
            // do stuff
            break;
    }

}
add_action('manage_{post-type-name}_custom_column', 'wpse19435_manage_single_column', 10, 2);

Answer 2

Thanks to Mike23 for the tip. Here's the code that I'm using to add a column to only the "customer" role:

if( $_GET['role'] == "customer" ) { 

add_filter('manage_users_columns', 'add_ecommerce_column');
add_filter('manage_users_custom_column', 'manage_ecommerce_column', 10, 3);


function add_ecommerce_column($columns) {
        $columns['ecommerce'] = 'Ecommerce';
    return $columns;

}

function manage_ecommerce_column($empty='', $column_name, $id) {
    if( $column_name == 'ecommerce' ) {
        return $column_name.$id;    
        }
}
}

Any ideas or suggestions for improvement are very welcomed.

Answer 3

Have a look at current_user_can. With that you can filter your code by roles, and then do whatever you want to customize the interface.

Quick and dirty, with CSS. Put this in your functions.php :

function add_custom_admin_styles() {
    /* Customers */
    if(current_user_can('customer')){
        echo '
        <style type="text/css">
            .column-posts{display:none!important;}  
        </style>';
    }
}
add_action('admin_head', 'add_custom_admin_styles');