2010-12-02 23 views
7

我使用這個代碼在頁面上簡單的畫廊:排除從畫廊簡碼the_post_thumbnail

<?php echo do_shortcode('[gallery itemtag="ul" icontag="li" size="full" columns="0" link="file" ]'); ?> 

現在的問題是,最終用戶能夠通過媒體頁面選擇此之前上傳圖片圖像作爲特色圖像。

我知道這可以通過將特色圖片的ID添加到短代碼的排除列表來解決,但是如何自動獲取此ID?

回答

15
function exclude_thumbnail_from_gallery($null, $attr) 
{ 
    if (!$thumbnail_ID = get_post_thumbnail_id()) 
     return $null; // no point carrying on if no thumbnail ID 

    // temporarily remove the filter, otherwise endless loop! 
    remove_filter('post_gallery', 'exclude_thumbnail_from_gallery'); 

    // pop in our excluded thumbnail 
    if (!isset($attr['exclude']) || empty($attr['exclude'])) 
     $attr['exclude'] = array($thumbnail_ID); 
    elseif (is_array($attr['exclude'])) 
     $attr['exclude'][] = $thumbnail_ID; 

    // now manually invoke the shortcode handler 
    $gallery = gallery_shortcode($attr); 

    // add the filter back 
    add_filter('post_gallery', 'exclude_thumbnail_from_gallery', 10, 2); 

    // return output to the calling instance of gallery_shortcode() 
    return $gallery; 
} 
add_filter('post_gallery', 'exclude_thumbnail_from_gallery', 10, 2); 
+0

起初我以爲它像一個魅力工作,但我發現它排除了我所有的圖像,並返回一個值'數組'。 – Ewald 2010-12-04 12:26:30

+0

我的不好 - 完全誤讀了`gallery_shortcode()`中的過濾器 - 檢查修改後的答案! – TheDeadMedic 2010-12-04 18:29:19

3
<?php $id = get_post_thumbnail_id(get_the_ID()); // gets the post thumbnail ID ?> 
<?php echo do_shortcode('[gallery exclude='.$id.' link="file" itemtag="div" icontag="span" captiontag="p" size="thumbnail" columns="4" ]'); ?> 
1

怎麼樣?

echo do_shortcode('[gallery exclude="' . get_post_thumbnail_id($post->ID) . '"]');