ecshop if标签，超过N条，就输出记录

<!--商品详情右侧  相关商品推荐-->
<!-- {if $related_goods} -->
<!--{foreach from=$related_goods item=releated_goods_data name=foo}-->
<!--{if $smarty.foreach.foo.iteration<3}-->
<div class="goods-a-4">
   <a href="{$releated_goods_data.url}"><img src="{$releated_goods_data.goods_thumb}" alt="{$releated_goods_data.goods_name}" />
    <div class="goods-a-4-text"><a href="{$releated_goods_data.url}" title="{$releated_goods_data.goods_name}">{$releated_goods_data.short_name|truncate:26}</a>{$key}</div>
    <div class="goods-a-4-price">
    <!-- {if $releated_goods_data.promote_price neq 0} -->
        {$releated_goods_data.formated_promote_price}
        <!-- {else} -->
        {$releated_goods_data.shop_price}
        <!-- {/if} -->
    </div>
</div>
<!-- {/if} -->
<!--{/foreach}-->
<!-- {/if} -->