是否可以在WordPress中使用没有链接的标题创建自定义菜单？

Question

We are building a theme on WordPress 3.5.1 and we created two custom menus - one for the header and one for the footer. In the footer the titles are not linkable, therefore we created custom links with href "#" and then changed the href to "". The result are empty links with <a>. I know it's possible to change the cursor of these empty links with CSS:

.footer-content #sitemap ul.menu > li.menu-item > a {
    cursor: text;
}

and I also found out a way to remove these empty links with JavaScript and jQuery:

$('.footer-content #sitemap ul.menu > li.menu-item > a').each(function() {
    // If href is empty, remove <a> element.
    var href = $(this).attr('href');
    var href_length = 0;
    if (!(typeof href === 'undefined')) {
        var href_length = href.length;
    }
    if (href_length === 0) {
        var contents = $(this).contents();
        $(this).replaceWith(contents);
    }
});

(the footer menu is inside the .footer-content #sitemap elements:

<div class="footer-content">
<div id="sitemap" class="not_mobile">

)

but is it possible to remove the empty <a> elements from the HTML without using JavaScript? The function that creates the footer menu is:

<?php wp_nav_menu( array( 'theme_location' => 'footer_menu' ) ); ?>

Thanks, Uri @ Initech.

Answer 1

OK, I found a solution. I searched and found out function start_el(...) on class Walker_Nav_Menu, then copied it and changed only the last part of it:

class themeslug_walker_nav_menu extends Walker_Nav_Menu {
    /**
     * @see Walker::start_el()
     * @since 3.0.0
     *
     * @param string $output Passed by reference. Used to append additional content.
     * @param object $item Menu item data object.
     * @param int $depth Depth of menu item. Used for padding.
     * @param int $current_page Menu item ID.
     * @param object $args
     */
    function start_el( &$output, $item, $depth = 0, $args = array(), $id = 0 ) {
        $indent = ( $depth ) ? str_repeat( "\t", $depth ) : '';

        $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 ) );
        $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 .'>';

        $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        ) .'"' : '';

        $item_output = $args->before;
        if (! empty( $item->url )) {
            $item_output .= '<a'. $attributes .'>';
        }
        $item_output .= $args->link_before . apply_filters( 'the_title', $item->title, $item->ID ) . $args->link_after;
        if (! empty( $item->url )) {
            $item_output .= '</a>';
        }
        $item_output .= $args->after;

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

Then I changed the call to wp_nav_menu on footer.php:

<?php wp_nav_menu( array( 'theme_location' => 'footer_menu', 'walker' => new themeslug_walker_nav_menu ) ); ?>

It works and there are no <a> links when the href is empty (my changes are both ifs: if (! empty( $item->url )) {). Thanks to Mangesh Parte for the idea.

Uri.