How to wrap submenu in wordpress wp_nav function - html

Question

I am new to wordpress would be great help if anyone can help me out, i have designed a website using bootstrap framework, for making it CMS i am using wordpress. i need to get menus dynamically from wordpress which i have dine using the following code
<?php wp_nav_menu(array('menu_class' => 'nav nav-justified','container_class' => 'menu_bac')); ?>
but problem i am stuck with is to get sub menus dynamically, i have been advised to use navwalker , but no idea how to add it to my own code.
can someone please help me out

Answer 1

You need to put your code in you function.php file this file located in your theme folder. Implement below code for extend Walker_Nav_Menu class and put your custom code based on your requirement.
class Custom_Menu extends Walker_Nav_Menu {
public function start_el( &$output, $item, $depth = 0, $args = array(), $id = 0 ) {
$indent = ( $depth ) ? str_repeat( "\t", $depth ) : '';
$classes = empty( $item->classes ) ? array() : (array) $item->classes;
$id = $id ? ' id="' . esc_attr( $id ) . '"' : '';
//print_r($args);
$children = get_posts(array('post_type' => 'nav_menu_item', 'nopaging' => true, 'numberposts' => 1, 'meta_key' => '_menu_item_menu_item_parent', 'meta_value' => $item->ID));
if (empty($children)) {
$output .= $indent . '<li' . $id . $class_names .'>';
} else {
$output .= $indent . '<li class="dropdown">';
}
$atts = array();
$atts['title'] = ! empty( $item->attr_title ) ? $item->attr_title : '';
$atts['target'] = ! empty( $item->target ) ? $item->target : '';
$atts['rel'] = ! empty( $item->xfn ) ? $item->xfn : '';
$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 . '="' . $value . '"';
}
}
if ($children) {
$item_output = $args->before;
$item_output .= '<a class="dropdown-toggle js-activated" data-toggle="dropdown" href="#">';
$item_output .= $args->link_before . apply_filters( 'the_title', $item->title, $item->ID ) . $args->link_after;
$item_output .= '<b class="caret"></b>';
$item_output .= '</a>';
$item_output .= $args->after;
} else {
$item_output = $args->before;
$item_output .= '<a'. $attributes .'>';
/** This filter is documented in wp-includes/post-template.php */
$item_output .= $args->link_before . apply_filters( 'the_title', $item->title, $item->ID ) . $args->link_after;
$item_output .= '</a>';
$item_output .= $args->after;
}
$output .= apply_filters( 'walker_nav_menu_start_el', $item_output, $item, $depth, $args );
}
public function start_lvl( &$output, $depth = 0, $args = array() ) {
$indent = str_repeat("\t", $depth);
$output .= "\n$indent<ul class=\"dropdown-menu\">\n";
}
}
below code put in your header.php file
$defaults = array(
'theme_location' => 'primary',
'menu' => '',
'container' => 'div',
'container_class' => 'navbar-collapse collapse',
'container_id' => '',
'menu_class' => 'nav navbar-nav navbar-right',
'menu_id' => '',
'echo' => true,
'fallback_cb' => 'wp_page_menu',
'before' => '',
'after' => '',
'link_before' => '',
'link_after' => '',
'items_wrap' => '<ul id="%1$s" class="%2$s">%3$s</ul>',
'depth' => 0,
'walker' => new Custom_Menu
);
wp_nav_menu($defaults);

Answer 2

Hey you can use this code for your bootstrap menu in wordpress
PHP CODE:-include this code in your header.php file
<div class="navbar-collapse collapse no-padding-lr">
<?php
$site_defaults = array(
'theme_location' => 'primary',
'container' => 'div',
'container_class' => '',
'container_id' => '',
'menu_class' => '',
'menu_id' => '',
'echo' => true,
'fallback_cb' => 'wp_page_menu',
'before' => '',
'after' => '',
'link_before' => '',
'link_after' => '',
'items_wrap' => '<ul class="site-menu">%3$s</ul>',
'depth' => 0,
'walker' => '');
wp_nav_menu($site_defaults);
?>
</div>