我只需要为子菜单的第一项输出不同的html代码。如果当前项是否为第一项,如何签入start\\u el()函数?
示例:
Menu voice 1
-- Sub 1
-- Sub 2
-- Sub 3
Menu voice 2
Menu voice 3
Menu voice 4
我会知道我什么时候在Sub1
UPDATE - I\'ve solved using Static Var:
class my_walker_nav_menu extends Walker_Nav_Menu {
static $count=0;
function start_el(&$output, $item, $depth, $args) {
global $wp_query;
$indent = ( $depth ) ? str_repeat( "\\t", $depth ) : \'\';
$class_names = $value = \'\';
$classes = empty( $item->classes ) ? array() : (array) $item->classes;
$class_names = join( \' \', apply_filters( \'nav_menu_css_class\', array_filter( $classes ), $item ) );
$class_names = \' class="\' . esc_attr( $class_names ) . \'"\';
$output .= $indent . \'<li id="menu-item-\'. $item->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;
$item_output .= \'<a\'. $attributes .\'>\';
if ($depth==0) self::$count=0; // reset var when we are in first level
if ($depth==1 && self::$count==1) { // if we are in submenu and items count is 1...
//your custom code
}
$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, $args );
self::$count++; // increase counter
}
}