WordPress menu and bootstrap tab intergration - php

Question

I am building a WordPress blog with bootstrap, I have used the wp_bootstrap_navwalker php to enable my wordpress menus to pass into my bootstrap code like so
<div id="navbar" class="collapse navbar-collapse" style="background-color: #333;">
<div class="container">
<ul class="nav navbar-nav">
<?php
/* Primary navigation */
wp_nav_menu(array(
'menu' => 'Primary Menu',
'theme_location' => 'locations-primary',
'depth' => 2,
'container' => false,
'container_class' => 'collapse navbar-collapse',
'container_id' => 'bs-example-navbar-collapse-1',
'menu_class' => 'nav navbar-nav',
'fallback_cb' => 'wp_bootstrap_navwalker::fallback',
'walker' => new wp_bootstrap_navwalker())
);
?>
</ul>
</div>
</div>
This works well, although now im trying to build a tab menu using the menu system above like so
<div class="container">
<ul class="nav navbar-nav">
<div class="row text-center" id="tabs">
<?php
/* Secondary navigation */
wp_nav_menu(array(
'menu' => 'Secondary Menu',
'theme_location' => 'locations-secondary',
'depth' => 2,
'container' => false,
'container_class' => 'collapse navbar-collapse',
'container_id' => 'bs-example-navbar-collapse-1',
'menu_class' => 'nav navbar-nav',
'fallback_cb' => 'wp_bootstrap_navwalker::fallback',
'walker' => new wp_bootstrap_navwalker())
);
?>
</div>
</ul>
</div>
and tab content
<div class="row text-center" id="tabs">
<?php get_template_part('advicecentre_bar', get_post_format());>
<div class="tab-content">
<div class="tab-pane active" id="tab1">
<?php
$id = 177;
$post = get_post($id);
$title = apply_filters('the_title', $post->post_title);
$content = apply_filters('the_content', $post->post_content);
echo '<h1>' . $title . '</h1><hr>';
echo $content;
?>
</div>
<div class="tab-pane" id="tab2">
<?php
$id = 2;
$post = get_post($id);
$title = apply_filters('the_title', $post->post_title);
$content = apply_filters('the_content', $post->post_content);
echo '<h1>' . $title . '</h1><hr>';
echo $content;
?>
</div>
<div class="tab-pane" id="tab3">
<?php
$id = 168;
$post = get_post($id);
$title = apply_filters('the_title', $post->post_title);
$content = apply_filters('the_content', $post->post_content);
echo '<h1>' . $title . '</h1><hr>';
echo $content;
?>
</div>
</div>
</div>
within the wordpress menu cms i have created custom links and given a URL such as URL #tab1 however I am missing data-toggle="tab"to get the tabs working, I can not see a way to do this through the CMS dose anyone know how I can get this working.
UPDATE
Ok so I am trying to edit the following code to say if menu_class is nav nav-tabs then append data-toggle="tab" in the <a> need some help doing this
public function start_el( &$output, $item, $depth = 0, $args = array(), $id = 0 ) {
$indent = ( $depth ) ? str_repeat( "\t", $depth ) : '';
/**
* Dividers, Headers or Disabled
* =============================
* Determine whether the item is a Divider, Header, Disabled or regular
* menu item. To prevent errors we use the strcasecmp() function to so a
* comparison that is not case sensitive. The strcasecmp() function returns
* a 0 if the strings are equal.
*/
if ( strcasecmp( $item->attr_title, 'divider' ) == 0 && $depth === 1 ) {
$output .= $indent . '<li role="presentation" class="divider">';
} else if ( strcasecmp( $item->title, 'divider') == 0 && $depth === 1 ) {
$output .= $indent . '<li role="presentation" class="divider">';
} else if ( strcasecmp( $item->attr_title, 'dropdown-header') == 0 && $depth === 1 ) {
$output .= $indent . '<li role="presentation" class="dropdown-header">' . esc_attr( $item->title );
} else if ( strcasecmp($item->attr_title, 'disabled' ) == 0 ) {
$output .= $indent . '<li role="presentation" class="disabled">' . esc_attr( $item->title ) . '';
} else {
$class_names = $value = '';
$classes = empty( $item->classes ) ? array() : (array) $item->classes;
$classes[] = 'menu-item-' . $item->ID;
$class_names = join( ' ', apply_filters( 'nav_menu_css_class', array_filter( $classes ), $item, $args ) );
if ( $args->has_children )
$class_names .= ' dropdown';
if ( in_array( 'current-menu-item', $classes ) )
$class_names .= ' active';
$class_names = $class_names ? ' class="' . esc_attr( $class_names ) . '"' : '';
$id = apply_filters( 'nav_menu_item_id', 'menu-item-'. $item->ID, $item, $args );
$id = $id ? ' id="' . esc_attr( $id ) . '"' : '';
$output .= $indent . '<li' . $id . $value . $class_names .'>';
$atts = array();
$atts['title'] = ! empty( $item->title ) ? $item->title : '';
$atts['target'] = ! empty( $item->target ) ? $item->target : '';
$atts['rel'] = ! empty( $item->xfn ) ? $item->xfn : '';
// If item has_children add atts to a.
if ( $args->has_children && $depth === 0 ) {
$atts['href'] = '#';
$atts['data-toggle'] = 'dropdown';
$atts['class'] = 'dropdown-toggle';
$atts['aria-haspopup'] = 'true';
// $atts['data-toggle'] = 'elementscroll';
} else {
$atts['href'] = ! empty( $item->url ) ? $item->url : '';
}
$atts = apply_filters( 'nav_menu_link_attributes', $atts, $item, $args );
$attributes = '';
foreach ( $atts as $attr => $value ) {
if ( ! empty( $value ) ) {
$value = ( 'href' === $attr ) ? esc_url( $value ) : esc_attr( $value );
$attributes .= ' ' . $attr . '="' . $value . '"';
}
}
$item_output = $args->before;
Link to wp_bootstrap_navwalker