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WordPress 表示している固定ページが属する最上位〜全ての子孫ページのリストを表示

Last updated at Posted at 2016-07-02

数が増えるとカスタムメニューで対応しきれないよね。
どうせなら自動で出したいよね。

view-all-family-page-link.php
<?php
// 指定した固定ページが属する先祖・子孫全て表示
// 指定がない場合は表示している固定ページ
function view_all_family_page_link( $post_id = '' ) {

	if ( empty( $post_id ) ) {
		if ( ! is_page() ) {
			return;
		}
		global $post;
		$post_id = $post->ID;
	}

	$ancestor = array_pop( get_post_ancestors( $post_id ) );
	if( ! empty( $ancestor ) ) {
		$parent = $ancestor;
	} else {
		$parent = $post_id;
	}

	$args = array(
		'child_of'     => $parent,
		'echo'         => 0,
		'sort_column'  => 'menu_order, post_title',
		'title_li'     => '', 
	);
	$children = wp_list_pages($args);

	$output = '';
	if ( $children ) {
		$output .=  '<nav id="list_pages-' . $parent . '" class="page-navigation">' . "\n";
		$output .=  "<ul>\n" . $children . "</ul>\n";
		$output .=  "</nav>\n";
	}
	echo $output;
}

wp_list_pages() に渡すパラメーターを変えれば階層のあるカスタム投稿タイプでも対応可能。

マークアップはお好みで

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