为了在主页上显示一个广告以及标准帖子，我将其添加到WordPress主循环中：

/** Add "advert" post type to the main query **/
add_action( \'pre_get_posts\', \'add_advert_post_type_to_query\' );
function add_advert_post_type_to_query( $query ) {
  if ( is_home() && $query->is_main_query() )
    $query->set( \'post_type\', array( \'post\', \'advert\' ) );
  return $query;
}

在index.php 在我的主题（2017）中，我看到了loop用来显示帖子内容的模板：

        <?php
        if ( have_posts() ) :

            /* Start the Loop */
            while ( have_posts() ) : the_post();

                /*
                 * Include the Post-Format-specific template for the content.
                 * If you want to override this in a child theme, then include a file
                 * called content-___.php (where ___ is the Post Format name) and that will be used instead.
                 */
                get_template_part( \'template-parts/post/content\', get_post_format() );

            endwhile;

            the_posts_pagination( array(
                \'prev_text\' => twentyseventeen_get_svg( array( \'icon\' => \'arrow-left\' ) ) . \'<span class="screen-reader-text">\' . __( \'Previous page\', \'twentyseventeen\' ) . \'</span>\',
                \'next_text\' => \'<span class="screen-reader-text">\' . __( \'Next page\', \'twentyseventeen\' ) . \'</span>\' . twentyseventeen_get_svg( array( \'icon\' => \'arrow-right\' ) ),
                \'before_page_number\' => \'<span class="meta-nav screen-reader-text">\' . __( \'Page\', \'twentyseventeen\' ) . \' </span>\',
            ) );

        else :

            get_template_part( \'template-parts/post/content\', \'none\' );

        endif;
        ?>

在该模板中(template-parts/post/content) 我发现它仅用于post类型：

        if ( \'post\' === get_post_type() ) :
            echo \'<div class="entry-meta">\';
                if ( is_single() ) :
                    twentyseventeen_posted_on();
                else :
                    echo twentyseventeen_time_link();
                    twentyseventeen_edit_link();
                endif;
            echo \'</div><!-- .entry-meta -->\';
        endif;

所以，我不明白用什么模板来显示我的自定义帖子类型？与此相关，我有一个问题：a) 如何“强制”主循环对自定义帖子类型使用与帖子类型相同的模板和/或b) 当主页上的主循环显示时，如何将自定义模板分配给我的自定义帖子类型？

UPDATE

可以this 如何使用？

function get_template_part_custom($content_name) {
     global $post;
     //its paper type?
     if ($post->post_type == \'paper\') {
         //get template-parts/content-paper.php
         get_template_part( \'template-parts/content\', $content_name );
     }else{
         //fallback to the default
         get_template_part( \'template-parts/content\', get_post_format($post) );
     }
}