Walker Menu WordPress

walkermenu.php

<?php 
/**
 * Walker
 */
class WalkerHeader extends Walker_Nav_Menu {
    function start_el( &$output, $item, $depth = 0, $args = array(), $id = 0 ) {
        $object    = $item->object;
        $type      = $item->type;
        $title     = $item->title;
        $permalink = $item->url;
        $taxonomy  = $item->object;
        $term_id   = $item->object_id;
        $colorlink = get_field( 'cat_color', $taxonomy . '_' . $term_id );

        $output .= "<li class='" . implode( " ", $item->classes ) . "'  data-color='" . $colorlink . "'>";
        $output .= '<a href="' . $permalink . '" style="border-color: ' . $colorlink . ';"   data-color="' . $colorlink . '">';
        $output .= $title;
        $output .= '</a>';
        // $output .= print_r($item);

    }
}