iPascalCase
11/26/2017 - 10:27 PM
wordpress navigation walker (nav walker for wordpress)
place it in a directory called "inc" then write an require once in the functions.php to include it to the wordpress system like the below one. this line goes into functions.php (copy-paste it without the qoutations) > "require_once('inc/mdb_bootstrap_navwalker.php');" then use the below code in the header.php and header-shop.php if you use woocommerce to register the navigation bar > "<?php if ( has_nav_menu( 'navbar' ) ) { wp_nav_menu( array( 'menu' => 'navbar', 'theme_location' => 'navbar', 'depth' => 10, 'menu_class' => 'navbar-nav mr-auto', 'fallback_cb' => 'wp_bootstrap_navwalker::fallback', 'container' => false, 'walker' => new MDBBootstrapNavMenuWalker()) ); } else echo "Please assign Navbar Menu in Wordpress Admin -> Appearance -> Menus -> Manage Locations"; ?>" after all these put these css in the woocommerce.css/ style.css to show the multi-level navigation bar > ".dropdown-submenu { position: relative; }
.dropdown-submenu>.dropdown-menu { top: 0; right: 100%; margin-top: -6px; margin-right: -1px; -webkit-border-radius: 0 6px 6px 6px; -moz-border-radius: 0 6px 6px; border-radius: 0 6px 6px 6px; }
.dropdown-submenu:hover>.dropdown-menu { display: block; }
.dropdown-submenu>a:after { display: block; content: " "; float: left; width: 0; height: 0; border-color: transparent; border-style: solid; border-width: 5px 5px 5px 0; border-left-color: #ccc; margin-top: 5px; margin-right: -10px; }
.dropdown-submenu:hover>a:after { border-right-color: #fff; }
.dropdown-submenu.pull-left { float: none; }
.dropdown-submenu.pull-left>.dropdown-menu { right: -100%; margin-right: 10px; -webkit-border-radius: 6px 6px 6px 0; -moz-border-radius: 6px 6px 6px 0; border-radius: 6px 6px 6px 0; }"
<?php
/**
* Created by PhpStorm.
* User: hazhir ahmadzadeh
* company: PascalCase.ir
* Date: 10/30/2017 AD
* Time: 16:24
* i have changed the orginal code a little bit to suit my needs :) thanks to the MDB team and others
*/
?>
<?php
/**
* Extended Walker class for use with the
* Material Design for Bootstrap toolkit in Wordpress.
* Based on https://gist.github.com/3765640
*
*/
class MDBBootstrapNavMenuWalker extends Walker_Nav_Menu {
function start_lvl( &$output, $depth = 0, $args = array() ) {
$indent = str_repeat( "\t", $depth );
$submenu = ($depth > 0) ? ' sub-menu' : '';
$output .= "\n$indent<ul class=\"dropdown-menu$submenu depth_$depth\">\n";
}
function start_el( &$output, $item, $depth = 0, $args = array(), $id = 0 ) {
$indent = ( $depth ) ? str_repeat( "\t", $depth ) : '';
$li_attributes = '';
$class_names = $value = '';
$classes = empty( $item->classes ) ? array() : (array) $item->classes;
// managing divider: add divider class to an element to get a divider before it.
$divider_class_position = array_search('divider', $classes);
if($divider_class_position !== false){
$output .= "<li class=\"divider\"></li>\n";
unset($classes[$divider_class_position]);
}
$classes[] = ( $args->has_children ) ? 'dropdown' : '';
$classes[] = ( $item->current || $item->current_item_ancestor ) ? 'active' : '';
$classes[] = 'nav-item menu-item-' . $item->ID;
if($depth && $args->has_children){
$classes[] = 'dropdown-submenu';
}
$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 ) .'"' : '';
$attributes .= ($args->has_children) ? ' class="dropdown-toggle nav-link" data-toggle="dropdown" aria-labelledby="dropdownMenu"' : ' class="nav-link"';
$item_output = $args->before;
$item_output .= '<a'. $attributes .'>';
$item_output .= $args->link_before . apply_filters( 'the_title', $item->title, $item->ID ) . $args->link_after;
$item_output .= ($depth == 0 && $args->has_children) ? ' <b class="caret"></b></a>' : '</a>';
$item_output .= $args->after;
$output .= apply_filters( 'walker_nav_menu_start_el', $item_output, $item, $depth, $args );
}
function display_element( $element, &$children_elements, $max_depth, $depth = 0, $args, &$output ) {
//v($element);
if ( !$element )
return;
$id_field = $this->db_fields[ 'id' ];
//display this element
if ( is_array( $args[ 0 ] ) )
$args[ 0 ][ 'has_children' ] = ! empty( $children_elements[ $element->$id_field ] );
else if ( is_object( $args[ 0 ] ) )
$args[ 0 ]->has_children = ! empty( $children_elements[ $element->$id_field ] );
$cb_args = array_merge( array( &$output, $element, $depth ), $args );
call_user_func_array( array(&$this, 'start_el'), $cb_args );
$id = $element->$id_field;
// descend only when the depth is right and there are childrens for this element
if ( ($max_depth == 0 || $max_depth > $depth + 1 ) && isset( $children_elements[ $id ]) ) {
foreach( $children_elements[ $id ] as $child ){
if ( !isset( $newlevel ) ) {
$newlevel = true;
//start the child delimiter
$cb_args = array_merge( array( &$output, $depth ), $args );
call_user_func_array( array( &$this, 'start_lvl' ), $cb_args );
}
$this->display_element( $child, $children_elements, $max_depth, $depth + 1, $args, $output );
}
unset( $children_elements[ $id ] );
}
if ( isset( $newlevel ) && $newlevel ){
//end the child delimiter
$cb_args = array_merge( array( &$output, $depth ), $args );
call_user_func_array( array( &$this, 'end_lvl' ), $cb_args );
}
//end this element
$cb_args = array_merge( array( &$output, $element, $depth ), $args );
call_user_func_array( array( &$this, 'end_el' ), $cb_args );
}
}