bootstrap-5-wordpress-navbar-walker - is there any support for multilevel menu

[Mrinmaybiswas]

Hi @AlexWebLab ,

Thank you for this code. I have implement this code working fine for singe dropdown but when I try to do this multilevel on that time menu ul not generating. Can you help me on this.

[Mrinmaybiswas]

https://codepen.io/typo3-freelancer/pen/poEvyGj

Here is the support of bootstrap multilevel menu.

[Mrinmaybiswas]

Hi @AlexWebLab @AlexWebLab @justinkruit

Hi have fixed this issue here is the code for clear understanding.

` //use on menu section

$args = array( 'theme_location' => 'header-menu', 'container' => false, 'menu_class' => '', 'depth' => 0, 'fallback_cb' => 'bootstrap_5_wp_nav_menu_walker::fallback', 'items_wrap' => '

%3$s

', 'walker' => new bootstrap_5_wp_nav_menu_walker() );

// use function.php

// bootstrap 5 wp_nav_menu walker class bootstrap_5_wp_nav_menu_walker extends Walker_Nav_menu { private $current_item; private $dropdown_menu_alignment_values = [ 'dropdown-menu-start', 'dropdown-menu-end', 'dropdown-menu-sm-start', 'dropdown-menu-sm-end', 'dropdown-menu-md-start', 'dropdown-menu-md-end', 'dropdown-menu-lg-start', 'dropdown-menu-lg-end', 'dropdown-menu-xl-start', 'dropdown-menu-xl-end', 'dropdown-menu-xxl-start', 'dropdown-menu-xxl-end' ];

/**

• Start Level */ function start_lvl(&$output, $depth = 0, $args = null) { $dropdown_menu_class[] = ''; foreach ($this->current_item->classes as $class) { if (in_array($class, $this->dropdown_menu_alignment_values)) { $dropdown_menu_class[] = $class; } } $indent = str_repeat("\t", $depth); // Mrinmay changed sub-menu for dropdown-submenu $submenu = ($depth > 0) ? ' dropdown-submenu' : ''; $output .= "\n$indent<ul class=\"dropdown-menu$submenu " . esc_attr(implode(" ", $dropdown_menuclass)) . " depth$depth\">\n"; }

  /**

• Start Element */ function start_el(&$output, $item, $depth = 0, $args = null, $id = 0) { $this->current_item = $item;

  $indent = ($depth) ? str_repeat("\t", $depth) : '';

  $li_attributes = ''; $class_names = $value = '';

  $classes = empty($item->classes) ? array() : (array) $item->classes;

  $classes[] = ($args->walker->has_children) ? 'dropdown' : ''; $classes[] = 'nav-item'; $classes[] = 'nav-item-' . $item->ID; // Mrinmay added dropdown-menu-child-item & at_depth classes if ($depth && $args->walker->has_children) { $classes[] = 'dropdown-menu-child-item dropdown-menu-end atdepth'.$depth; }

  $class_names = join(' ', apply_filters('nav_menu_css_class', array_filter($classes), $item, $args)); $class_names = ' class="' . esc_attr($class_names) . '"';

  $id = apply_filters('nav_menu_item_id', 'menu-item-' . $item->ID, $item, $args); $id = strlen($id) ? ' id="' . esc_attr($id) . '"' : '';

  $output .= $indent . '<li ' . $id . $value . $class_names . $li_attributes . '>';

  $attributes = !empty($item->attr_title) ? ' title="' . esc_attr($item->attr_title) . '"' : ''; $attributes .= !empty($item->target) ? ' target="' . esc_attr($item->target) . '"' : ''; $attributes .= !empty($item->xfn) ? ' rel="' . esc_attr($item->xfn) . '"' : ''; $attributes .= !empty($item->url) ? ' href="' . esc_attr($item->url) . '"' : '';

  $active_class = ($item->current || $item->current_item_ancestor || in_array("current_page_parent", $item->classes, true) || in_array("current-post-ancestor", $item->classes, true)) ? 'active' : ''; $nav_link_class = ($depth > 0) ? 'dropdown-item ' : 'nav-link ';

  if ($args->walker->has_children) { // Mrinmay added data-bs-auto-close $attributes .= ' class="' . $nav_link_class . $active_class . ' dropdown-toggle" data-bs-toggle="dropdown" aria-haspopup="true" data-bs-auto-close="outside" aria-expanded="false"'; } else { $attributes .= ' class="' . $nav_link_class . $active_class . '"'; }

  $item_output = $args->before; $item_output .= '<a' . $attributes . '>'; $item_output .= $args->link_before . apply_filters('the_title', $item->title, $item->ID) . $args->link_after; $item_output .= ''; $item_output .= $args->after;

  $output .= apply_filters('walker_nav_menu_start_el', $item_output, $item, $depth, $args); }

} // register a new menu register_nav_menu('Header Menu', 'header-menu');`