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WordPress nav walker that strips the WP generated styles and IDs from the generated output.
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<?php | |
class Clean_Walker_Nav extends Walker_Nav_Menu { | |
/** | |
* Filter used to remove built in WordPress-generated classes | |
* @param mixed $var The array item to verify | |
* @return boolean Whether or not the item matches the filter | |
*/ | |
function filter_builtin_classes( $var ) { | |
return ( FALSE === strpos( $var, 'item' ) ) ? $var : ''; | |
} | |
function start_lvl( &$output, $depth = 0, $args = array() ) { | |
$indent = str_repeat("\t", $depth); | |
$output .= "\n$indent<ul>\n"; | |
} | |
function start_el( &$output, $item, $depth = 0, $args = array(), $id = 0 ) { | |
$indent = ( $depth ) ? str_repeat( "\t", $depth ) : ''; | |
$class_names = $value = ''; | |
$unfiltered_classes = empty( $item->classes ) ? array() : (array) $item->classes; | |
$classes = array_filter( $unfiltered_classes, array( $this, 'filter_builtin_classes' ) ); | |
if ( preg_grep("/^current/", $unfiltered_classes) ) { | |
$classes[] = 'active'; | |
} | |
$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' . $value . $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 . '"'; | |
} | |
} | |
$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; | |
$output .= apply_filters( 'walker_nav_menu_start_el', $item_output, $item, $depth, $args ); | |
} | |
} // Walker_Nav_Menu |
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