How to activate “Description” metabox for menu item programmatically?

I’m creating custom wordpress theme. How can I enable “Description” metabox for menu items (on nav-menu page) by default programmatically?

Answers:

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Method 1

Remove the description from the user meta value managenav-menuscolumnshidden:

add_filter( 'manage_nav-menus_columns', 'enable_nav_menu_description_by_default' );

function enable_nav_menu_description_by_default( $columns )
{
    $desc_key = 'managenav-menuscolumnshidden';
    $hidden   = get_user_option( $desc_key );
    $user_id  = wp_get_current_user()->ID;

    if ( ! $hidden )
    {
        update_user_option(
            $user_id,
            $desc_key,
            array ( 0 => 'link-target', 1 => 'css-classes', 2 => 'xfn' )
        );
    }
    elseif ( FALSE !== ( $key = array_search( 'description', $hidden ) ) )
    {
        unset( $hidden[ $key ] );
        update_user_option( $user_id, $desc_key, $hidden );
    }

    return $columns;
}

Method 2

If you’re looking to output the menu description here is a useful tutorial using WordPress Walker Menu class to enchance the menu WordPress Walker Menu Tutorial

All methods was sourced from stackoverflow.com or stackexchange.com, is licensed under cc by-sa 2.5, cc by-sa 3.0 and cc by-sa 4.0