✏️ Editing: default_menu_walker.php Writable

<?php 
function newsexo_page_menu_args( $args ) {
	if ( ! isset( $args['show_home'] ) )
		$args['show_home'] = true;
	return $args;
}
add_filter( 'wp_page_menu_args', 'newsexo_page_menu_args' );
function newsexo_fallback_page_menu( $args = array() ) {
	$defaults = array('sort_column' => 'menu_order, post_title', 'menu_class' => 'menu', 'echo' => true, 'link_before' => '', 'link_after' => '');
	$args = wp_parse_args( $args, $defaults );
	$args = apply_filters( 'wp_page_menu_args', $args );
	$menu = '';
	$list_args = $args;
	// Show Home in the menu
	if ( ! empty($args['show_home']) ) {
		if ( true === $args['show_home'] || '1' === $args['show_home'] || 1 === $args['show_home'] )
			$text = 'Home';
		else
			$text = $args['show_home'];
		$class = '';
		if ( is_front_page() && !is_paged() )
		{
		$class = 'class="nav-item menu-item active"';
		}
		else
		{
			$class = 'class="nav-item menu-item "';
		}
		$menu .= '<li ' . $class . '><a class="nav-link " href="' . esc_url(home_url( '/' )) . '" title="' . esc_attr($text) . '">' . $args['link_before'] . $text . $args['link_after'] . '</a></li>';
		// If the front page is a page, add it to the exclude list
		if (get_option('show_on_front') == 'page') {
			if ( !empty( $list_args['exclude'] ) ) {
				$list_args['exclude'] .= ',';
			} else {
				$list_args['exclude'] = '';
			}
			$list_args['exclude'] .= get_option('page_on_front');
		}
	}
	$list_args['echo'] = false;
	$list_args['title_li'] = '';
	$list_args['walker'] = new newsexo_walker_page_menu;
	$menu .= str_replace( array( "\r", "\n", "\t" ), '', wp_list_pages($list_args) );
	if ( $menu )
		$menu = '<ul class="'. esc_attr($args['menu_class']) .'">' . $menu . '</ul>';

$menu = $menu . "\n";
	$menu = apply_filters( 'wp_page_menu', $menu, $args );
	if ( $args['echo'] )
		echo $menu;
	else
		return $menu;
}
class newsexo_walker_page_menu extends Walker_Page{
	function start_lvl( &$output, $depth = 0, $args = array() ) {
		$indent = str_repeat("\t", $depth);
		$output .= "\n$indent<ul class='dropdown-menu default'>\n";
	}
	function start_el( &$output, $page, $depth=0, $args = array(), $current_page = 0 )
	 {
		if ( $depth )
			$indent = str_repeat("\t", $depth);
		else
			$indent = '';

if($depth === 0)
		{
			$child_class='nav-link';
		}
		else if($depth > 0)
		{
			$child_class='dropdown-item';
		}
		else
		{
			$child_class='';
		}
		extract($args, EXTR_SKIP);
		$css_class = array('menu-item page_item dropdown', 'page-item-'.$page->ID);
		if ( !empty($current_page) ) {
			$_current_page = get_post( $current_page );
			if ( in_array( $page->ID, $_current_page->ancestors ) )
				$css_class[] = 'current_page_ancestor';
			if ( $page->ID == $current_page )
				$css_class[] = 'nav-item active';
			elseif ( $_current_page && $page->ID == $_current_page->post_parent )
				$css_class[] = 'current_page_parent';
		} elseif ( $page->ID == get_option('page_for_posts') ) {
			$css_class[] = 'current_page_parent';
		}
		$css_class = implode( ' ', apply_filters( 'page_css_class', $css_class, $page, $depth, $args, $current_page ) );
		$output .= $indent . '<li class="nav-item ' . $css_class . '"><a class="' . $child_class . '" href="' . esc_url(get_permalink($page->ID)) . '">' . $link_before . apply_filters( 'the_title', $page->post_title, $page->ID ) . $link_after . '</a>';
		if ( !empty($show_date) ) {
			if ( 'modified' == $show_date )
				$time = $page->post_modified;
			else
				$time = $page->post_date;
			$output .= " " . mysql2date($date_format, $time);
		}
	}
}

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