Creating driven wordpress mega menu WordPress

Sébastien | French WordpressDesigner answers:

the mega menu will be only in the last tab ?



I give a solution below. This solution works perfectly. But this another solution is more "wordpress expert" :)

use a code like that to display your menu (note the walker) :
wp_nav_menu( array(
'container' =>false,
'menu_class' => 'nav',
'echo' => true,
'before' => '',
'after' => '',
'link_before' => '',
'link_after' => '',
'depth' => 0,
'walker' => new fwd_megamenu())
);

and add this code to your file functions.php

/***********************************************************************************
customize the display of wp_nav_menu
split the submenu into columns (3 items per list)
by Sebastien | french wordpressdesigner | superpositif.com
http://wpquestions.com/question/showChronoLoggedIn/id/9521
***********************************************************************************/
$superpositif = 0;
$count=0;

class superpositif_megamenu extends Walker_Nav_Menu {


function start_lvl( &$output, $depth = 0, $args = array() ) {
$indent = str_repeat("\t", $depth);
if($depth == 0) $output .= "\n$indent<div class=\"mega-menu-section\">
$indent<div class=\"wrapper\">
$indent<ul class=\"drop-dow\">\n";
else $output .= "\n$indent<ul class=\"sub-menu\">\n";

}


function end_lvl( &$output, $depth = 0, $args = array() ) {
$indent = str_repeat("\t", $depth);
if($depth == 0) $output .= "$indent</ul>\n
$indent</div>\n
$indent</div>\n";
else $output .= "$indent</ul>\n";
}


function start_el( &$output, $item, $depth = 0, $args = array(), $id = 0 ) {
global $superpositif;
$superpositif++;
global $count;
$count++;
$indent = ( $depth ) ? str_repeat( "\t", $depth ) : '';

$class_names = '';

$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 ) );
$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 ) . '"' : '';


if ($superpositif == 4) {
$output .= "\n$indent</ul>$indent<ul class=\"drop-dow\">\n";
$superpositif = 1;
}
$output .= $indent . '<li' . $id . $class_names .'>';

$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 ($item->menu_item_parent == 0) $superpositif = 0;
$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 .= '</a>';
$item_output .= $args->after;
if ($superpositif == 4) $superpositif = 0;

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


} // Walker_Nav_Menu

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