如何计算在关系字段中添加的帖子。关系字段是一个插件(http://www.advancedcustomfields.com/docs/field-types/relationship/)

在我的管理员中，我创建了一个元框，用于将其他帖子类型的帖子链接到我的帖子。请参见下面链接中的图片

http://i.imgur.com/PFFY8.jpg

如何获取附加到关系字段的帖子数量。

例如：如果关系字段有4篇文章添加到站点的选项卡中，我希望能够获得文章的数量

例如：拖车（1）-显示在前端。

类似的内容（cinemagia.ro/filme/avatar-2-578279/）

要检索帖子并显示到我的主题中，我使用

<?php if(get_field(\'trailere_filme\') != ""){foreach(get_field(\'trailere_filme\') as $post_object): ?>        
<div class="box-trailere">
<div class="trailer-img">
<a href="<?php echo get_permalink($post_object->ID); ?>" rel="bookmark" title="<?php printf(__(\'Trailer film %s\', \'kubrick\'), the_title_attribute(\'echo=0\')); ?>">
<span class="tip"><?php echo get_field( \'tip\', $post_object->ID ); ?></span>
<span class="trai-hov"></span>
<img src="http://img.youtube.com/vi/<?php echo get_field( \'trailer\', $post_object->ID ); ?>/<?php echo get_field( \'img_trailer\', $post_object->ID ); ?>" alt="Trailer <?php echo get_the_title($post_object->ID) ?>" title="Trailer <?php echo get_the_title($post_object->ID) ?>"></a>
<span class="duration"><?php echo get_field( \'time\', $post_object->ID ); ?></span>
</div>
<span class="trailer-title"><a href="<?php echo get_permalink($post_object->ID); ?>" title="Trailer <?php echo get_the_title($post_object->ID) ?>"><?php echo get_the_title($post_object->ID) ?></a></span>
</div>   
<?php endforeach;}else{?>
<div class="no-trailer">Acest film nu are trailer.</div>
<?php } ?>

在我的hteme中，我使用：

<?php
$orig_post = $post;
        global $post;
        $tags = wp_get_post_tags($post->ID);

        if ($tags) {
            $tag_ids = array();
            foreach($tags as $individual_tag) $tag_ids[] = $individual_tag->term_id;
            $args=array(
                \'tag__in\' => $tag_ids,
                \'post__not_in\' => array($post->ID),
                \'post_type\'=> \'stiri\',
                \'posts_per_page\'=>1, // Number of related videos that will be shown.
                \'caller_get_posts\'=>1

            );}
$recentPosts = new WP_Query($args);
?>
<?php while ($recentPosts->have_posts()) : $recentPosts->the_post(); ?>
<div class="sidebar-titlu"><a href="<?php the_permalink() ?>" rel="bookmark"><?php the_title(); ?></a></div>
<div class="sidebar-stiri">
<img src="/scripts/timthumb.php?src=<?php the_field(\'imagine_stire\'); ?>&h=60&w=90&zc=1" alt="" title="<?php the_title(); ?>" />
<?php $excerpt = get_the_excerpt();echo string_limit_words($excerpt,30);?><a class="detalii" href="<?php the_permalink() ?>" rel="bookmark" title="<?php printf(__(\'Permanent Link to %s\', \'kubrick\'), the_title_attribute(\'echo=0\')); ?>">...detalii</a>
</div>
</div>
<?php endwhile; ?>