WordPress自定义类型的搜索结果页面模板展现方式

<form action="/" method="get">
<input type="text" name="s" placeholder="搜索导航...">
<input type="hidden" name="post_type" value="navigation"> <!-- 关键参数 -->
</form>

add_filter('template_include', function($template) {
    if (is_search() && isset($_GET['post_type']) && $_GET['post_type'] === 'navigation') {
        $new_template = locate_template('search-navigation.php');
        if ($new_template) return $new_template;
    }
    return $template;
});