WP_REST_Posts_Controller::prepare_links PHP Method

    protected function prepare_links($post)
    {
        $base = sprintf('%s/%s', $this->namespace, $this->rest_base);
        // Entity meta.
        $links = array('self' => array('href' => rest_url(trailingslashit($base) . $post->ID)), 'collection' => array('href' => rest_url($base)), 'about' => array('href' => rest_url('wp/v2/types/' . $this->post_type)));
        if ((in_array($post->post_type, array('post', 'page'), true) || post_type_supports($post->post_type, 'author')) && !empty($post->post_author)) {
            $links['author'] = array('href' => rest_url('wp/v2/users/' . $post->post_author), 'embeddable' => true);
        }
        if (in_array($post->post_type, array('post', 'page'), true) || post_type_supports($post->post_type, 'comments')) {
            $replies_url = rest_url('wp/v2/comments');
            $replies_url = add_query_arg('post', $post->ID, $replies_url);
            $links['replies'] = array('href' => $replies_url, 'embeddable' => true);
        }
        if (in_array($post->post_type, array('post', 'page'), true) || post_type_supports($post->post_type, 'revisions')) {
            $links['version-history'] = array('href' => rest_url(trailingslashit($base) . $post->ID . '/revisions'));
        }
        $post_type_obj = get_post_type_object($post->post_type);
        if ($post_type_obj->hierarchical && !empty($post->post_parent)) {
            $links['up'] = array('href' => rest_url(trailingslashit($base) . (int) $post->post_parent), 'embeddable' => true);
        }
        // If we have a featured media, add that.
        if ($featured_media = get_post_thumbnail_id($post->ID)) {
            $image_url = rest_url('wp/v2/media/' . $featured_media);
            $links['https://api.w.org/featuredmedia'] = array('href' => $image_url, 'embeddable' => true);
        }
        if (!in_array($post->post_type, array('attachment', 'nav_menu_item', 'revision'), true)) {
            $attachments_url = rest_url('wp/v2/media');
            $attachments_url = add_query_arg('parent', $post->ID, $attachments_url);
            $links['https://api.w.org/attachment'] = array('href' => $attachments_url);
        }
        $taxonomies = get_object_taxonomies($post->post_type);
        if (!empty($taxonomies)) {
            $links['https://api.w.org/term'] = array();
            foreach ($taxonomies as $tax) {
                $taxonomy_obj = get_taxonomy($tax);
                // Skip taxonomies that are not public.
                if (empty($taxonomy_obj->show_in_rest)) {
                    continue;
                }
                $tax_base = !empty($taxonomy_obj->rest_base) ? $taxonomy_obj->rest_base : $tax;
                $terms_url = add_query_arg('post', $post->ID, rest_url('wp/v2/' . $tax_base));
                $links['https://api.w.org/term'][] = array('href' => $terms_url, 'taxonomy' => $tax, 'embeddable' => true);
            }
        }
        return $links;
    }

 /**
  * Prepare links for the request.
  *
  * @param WP_Post $post Post object.
  * @return array Links for the given post.
  */
 protected function prepare_links($post)
 {
     $links = parent::prepare_links($post);
     $filter_name = "rooftop_prepare_{$post->post_type}_links";
     $links = apply_filters($filter_name, $links, $post);
     return $links;
 }