Unorganized (for now) elements of snippets/tools/stuff for WordPress

nav.php

/**
 * Remove the id="" on nav menu items
 * Return 'menu-slug' for nav menu classes
 * Set 'current-menu' etc to 'active', 'active-parent', 'active-ancestor'
 * Based on roots
 */
function pb_nav_menu_css_class($classes, $item) {
  $slug = sanitize_title($item->title);
  $classes = preg_replace('/current-(menu|page)-(parent|ancestor)/', 'active-$2', $classes);
  $classes = preg_replace('/(current([-_](menu|page)[-_])(item|parent|ancestor))/', 'active', $classes);
  $classes = preg_replace('/^((menu|page)[-_\w+]+)+/', '', $classes);

  $classes[] = 'menu-' . $slug;

  $classes = array_unique($classes);

  return array_filter($classes, 'is_element_empty');
}
add_filter('nav_menu_css_class', 'pb_nav_menu_css_class', 10, 2);
add_filter('nav_menu_item_id', '__return_null');

redirect-to-post.php

//Function for redirecting to the created post/page in WordPress to the post/page itself

add_filter('redirect_post_location', 'redirect_to_post_on_publish_or_save');
function redirect_to_post_on_publish_or_save($location)
{
    if (isset($_POST['save']) || isset($_POST['publish'])) {
        if (preg_match("/post=([0-9]*)/", $location, $match)) {
            $pl = get_permalink($match[1]);
            if ($pl) {
                wp_redirect($pl);
            }
        }
    }
}

wp_menu_nav.html

$defaults = array(
	'theme_location'  => '',
	'menu'            => '',
	'container'       => 'div',
	'container_class' => '',
	'container_id'    => '',
	'menu_class'      => 'menu',
	'menu_id'         => '',
	'echo'            => true,
	'fallback_cb'     => 'wp_page_menu',
	'before'          => '',
	'after'           => '',
	'link_before'     => '',
	'link_after'      => '',
	'items_wrap'      => '<ul id="%1$s" class="%2$s">%3$s</ul>',
	'depth'           => 0,
	'walker'          => ''
);

<div class="menu-primary-navigation-container">
    <ul id="menu-primary-navigation" class="menu">
        <li id="menu-item-1" class="menu-item menu-item-type-post_type menu-item-object-page current-menu-item page_item page-item-1 current_page_item menu-item-1">
            <a href="http://yoursite.com/">Home</a>
        </li>
        <li id="menu-item-2" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-2">
            <a href="http://yoursite.com/lorem-ipsum/">Lorem ipsum</a>
        </li>
        <li id="menu-item-3" class="menu-item menu-item-type-custom menu-item-object-custom menu-item-3">
            <a href="#">Dolor sit</a>
            <ul class="sub-menu">
                <li id="menu-item-4" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-4">
                    <a href="http://yoursite.com/amet/">Amet</a>
                </li>
            </ul>
        </li>
    </ul>
</div>


Active classes: current_page_item, current-menu-ancestor, current-menu-item, current-menu-ancestor current-menu-parent current_page_parent current_page_ancestor



<ul id="menu-primary-navigation" class="nav">
    <li class="active menu-home"><a href="/">Home</a></li>
    <li class="menu-lorem-ipsum"><a href="/lorem-ipsum/">Lorem ipsum</a></li>
    <li class="menu-dolor-sit dropdown"><a href="#">Dolor sit</a>
    <ul class="dropdown-menu">
        <li class="menu-amet"><a href="/amet/">Amet</a></li>
    </ul>
    </li>
</ul>

Active classes: active
Open dropdown: dropdown.open

primary-navigation = sluggified version of menu name