问在WordPress存档页面中仅显示已发布的带有自定义元数据的自定义类型帖子

EN

function sitepoint_post_series_content_filter($content) {
    $slug = "sitepoint-postseries";
    if ($slug != get_post_type()) {
        return $content;
    }

    $post_series_list = get_option("post_series_" . get_the_ID() . "_ids", "");
    $post_series_list_array = explode(',', $post_series_list);

    $post_series_serial_number = array();

    foreach ($post_series_list_array as $key => $value) {
        $serial_number = get_post_meta($value, "sitepoint-postseries-serial-number", true);
        $post_series_serial_number[$value] = $serial_number;
    }

    asort($post_series_serial_number);

    $finalArray = array();
    foreach ($post_series_serial_number as $keyPostID => $valueID) {
        if('publish' == get_post_status($keyPostID)){
            $finalArray[$keyPostID] = $keyPostID;
        }
    }


    $html = "<ul class='sitepoint-post-series'>";

    foreach ($finalArray as $key => $value) {
        $post = get_post($key);
        $title = $post->post_title;
        $html = $html . "<li><h3><a href='" . get_permalink($key) . "'>" . $title . "</a></h3></li>";
    }

    $html = $html . "</ul>";
    return $content . $html;
}

add_filter("the_content", "sitepoint_post_series_content_filter");