用于Wordpress的菜单和子菜单PHP
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我有一个html结构，我想更改WordPress菜单维护类和id的菜单元素，我想改变我使用wp_get_nav_menu_items()和for each获得的元素，但不知道如何。
事情是更改父级和子项WP菜单类别的所有类别，依此类推，直到具有菜单的5级深度。例如，将第一个项目深度为0的设备替换为第二个级别的移动电话，然后进行更改。
<!-- mp-menu -->
<nav id="mp-menu" class="mp-menu mp-overlap">
<div class="mp-level mp-level-open" data-level="1">
<h2 class="icon icon-world">All Categories</h2>
<ul>
<li class="icon icon-arrow-left">
<a class="icon icon-display" href="#">Devices</a>
<div class="mp-level" data-level="2">
<h2 class="icon icon-display">Devices</h2>
<a class="mp-back" href="#">back</a>
<ul>
<li class="icon icon-arrow-left">
<a class="icon icon-phone" href="#">Mobile Phones</a>
<div class="mp-level">
<h2>Mobile Phones</h2>
<a class="mp-back" href="#">back</a>
<ul>
<li><a href="#">Super Smart Phone</a></li>
<li><a href="#">Thin Magic Mobile</a></li>
<li><a href="#">Performance Crusher</a></li>
<li><a href="#">Futuristic Experience</a></li>
</ul>
</div>
</li>
<li class="icon icon-arrow-left">
<a class="icon icon-tv" href="#">Televisions</a>
<div class="mp-level">
<h2>Televisions</h2>
<a class="mp-back" href="#">back</a>
<ul>
<li><a href="#">Flat Superscreen</a></li>
<li><a href="#">Gigantic LED</a></li>
<li><a href="#">Power Eater</a></li>
<li><a href="#">3D Experience</a></li>
<li><a href="#">Classic Comfort</a></li>
</ul>
</div>
</li>
<li class="icon icon-arrow-left">
<a class="icon icon-camera" href="#">Cameras</a>
<div class="mp-level">
<h2>Cameras</h2>
<a class="mp-back" href="#">back</a>
<ul>
<li><a href="#">Smart Shot</a></li>
<li><a href="#">Power Shooter</a></li>
<li><a href="#">Easy Photo Maker</a></li>
<li><a href="#">Super Pixel</a></li>
</ul>
</div>
</li>
</ul>
</div>
</li>
<li class="icon icon-arrow-left">
<a class="icon icon-news" href="#">Magazines</a>
<div class="mp-level">
<h2 class="icon icon-news">Magazines</h2>
<a class="mp-back" href="#">back</a>
<ul>
<li><a href="#">National Geographic</a></li>
<li><a href="#">Scientific American</a></li>
<li><a href="#">The Spectator</a></li>
<li><a href="#">The Rambler</a></li>
<li><a href="#">Physics World</a></li>
<li><a href="#">The New Scientist</a></li>
</ul>
</div>
</li>
<li class="icon icon-arrow-left">
<a class="icon icon-shop" href="#">Store</a>
<div class="mp-level">
<h2 class="icon icon-shop">Store</h2>
<a class="mp-back" href="#">back</a>
<ul>
<li class="icon icon-arrow-left">
<a class="icon icon-t-shirt" href="#">Clothes</a>
<div class="mp-level">
<h2 class="icon icon-t-shirt">Clothes</h2>
<a class="mp-back" href="#">back</a>
<ul>
<li class="icon icon-arrow-left">
<a class="icon icon-female" href="#">Women's Clothing</a>
<div class="mp-level">
<h2 class="icon icon-female">Women's Clothing</h2>
<a class="mp-back" href="#">back</a>
<ul>
<li><a href="#">Tops</a></li>
<li><a href="#">Dresses</a></li>
<li><a href="#">Trousers</a></li>
<li><a href="#">Shoes</a></li>
<li><a href="#">Sale</a></li>
</ul>
</div>
</li>
<li class="icon icon-arrow-left">
<a class="icon icon-male" href="#">Men's Clothing</a>
<div class="mp-level">
<h2 class="icon icon-male">Men's Clothing</h2>
<a class="mp-back" href="#">back</a>
<ul>
<li><a href="#">Shirts</a></li>
<li><a href="#">Trousers</a></li>
<li><a href="#">Shoes</a></li>
<li><a href="#">Sale</a></li>
</ul>
</div>
</li>
</ul>
</div>
</li>
<li>
<a class="icon icon-diamond" href="#">Jewelry</a>
</li>
<li>
<a class="icon icon-music" href="#">Music</a>
</li>
<li>
<a class="icon icon-food" href="#">Grocery</a>
</li>
</ul>
</div>
</li>
<li><a class="icon icon-photo" href="#">Collections</a></li>
<li><a class="icon icon-wallet" href="#">Credits</a></li>
</ul>
</div>
</nav>
<!-- /mp-menu -->
答案
你可以自定义wordpress的nav菜单walker类来放置你的N级HTML菜单结构。她是bootstrap nav walker的一个例子
if (!class_exists('BootstrapBasicMyWalkerNavMenu')) {
class BootstrapBasicMyWalkerNavMenu extends Walker_Nav_Menu
{
//Overwrite display_element function to add has_children attribute. Not needed in >= Wordpress 3.4
/**
* @link https://gist.github.com/duanecilliers/1817371 copy from this url
*/
function display_element($element, &$children_elements, $max_depth, $depth = 0, $args, &$output)
{
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'), $cb_args);
}// display_element
/**
* @link https://gist.github.com/duanecilliers/1817371 copy from this url
*/
public function start_el(&$output, $item, $depth = 0, $args = array(), $id = 0)
{
if ((is_object($item) && $item->title == null) || (!is_object($item))) {
return ;
}
$indent = ($depth) ? str_repeat(" ", $depth) : '';
$li_attributes = '';
$class_names = $value = '';
$classes = empty($item->classes) ? array() : (array) $item->classes;
//Add class and attribute to LI element that contains a submenu UL.
if (is_object($args) && $args->has_children) {
//$classes[] = 'dropdown';
$li_attributes .= ' data-dropdown="dropdown"';
}
$classes[] = 'menu-item-' . $item->ID;
//If we are on the current page, add the active class to that menu item.
$classes[] = ($item->current) ? 'active' : '';
//Make sure you still add all of the WordPress classes.
$class_names = join(' ', apply_filters('nav_menu_css_class', array_filter($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 . '>';
//Add attributes to link element.
$attributes = !empty($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) . '"' : '';
$attributes .= (is_object($args) && $args->has_children) ? ' class="dropdown-toggle" data-toggle="dropdown"' : '';
$item_output = (is_object($args)) ? $args->before : '';
$item_output .= '<a' . $attributes . '>';
$item_output .= (is_object($args) ? $args->link_before : '') . apply_filters('the_title', $item->title, $item->ID) . (is_object($args) ? $args->link_after : '');
$item_output .= (is_object($args) && $args->has_children) ? ' <span class="caret"></span> ' : '';
$item_output .= '</a>';
$item_output .= (is_object($args) ? $args->after : '');
$output .= apply_filters('walker_nav_menu_start_el', $item_output, $item, $depth, $args);
}// start_el
public function start_lvl(&$output, $depth = 0, $args = array())
{
$indent = str_repeat(" ", $depth);
$output .= "
$indent<ul class="sub-menu dropdown-menu">
";
}
}
}
怎么用，
<?php wp_nav_menu(array('theme_location' => 'your-menu-location', 'container' => false, 'menu_class' => 'nav navbar-nav', 'walker' => new BootstrapBasicMyWalkerNavMenu())); ?>
希望这会对你有所帮助。
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