编辑文章的时候经常忘记配置缩略图,虽然也有很多插件可以自动生成缩略图。
- 获得文章中第一张图片作为缩略图
- 当文章未设置缩略图时,自动设置默认缩略图
但是将缩略图显示为文章/页面列表页的一栏显示它不香吗?
将以下代码加入到wp-config.php文件的末尾!
PS:为啥是末尾?万一加上代码之后跟主题冲突了咋办?你可以删掉啊。
为啥不是加到主题的function.php文件中?万一你心血来潮想换个主题不是又得折腾一遍?
/* 以下代码将在文章列表中增加特色图片显示列*/ if ( !function_exists('fb_AddThumbColumn') && function_exists('add_theme_support') ) { // for post and page add_theme_support('post-thumbnails', array( 'post', 'page' ) ); function fb_AddThumbColumn($cols) { $cols['thumbnail'] = __('Thumbnail'); return $cols; } function fb_AddThumbValue($column_name, $post_id) { $width = (int) 35; $height = (int) 35; if ( 'thumbnail' == $column_name ) { // thumbnail of WP 2.9 $thumbnail_id = get_post_meta( $post_id, '_thumbnail_id', true ); // image from gallery $attachments = get_children( array('post_parent' => $post_id, 'post_type' => 'attachment', 'post_mime_type' => 'image') ); if ($thumbnail_id) $thumb = wp_get_attachment_image( $thumbnail_id, array($width, $height), true ); elseif ($attachments) { foreach ( $attachments as $attachment_id => $attachment ) { $thumb = wp_get_attachment_image( $attachment_id, array($width, $height), true ); } } if ( isset($thumb) && $thumb ) { echo $thumb; } else { echo __('None'); } } } // for posts add_filter( 'manage_posts_columns', 'fb_AddThumbColumn' ); add_action( 'manage_posts_custom_column', 'fb_AddThumbValue', 5, 2 ); // for pages add_filter( 'manage_pages_columns', 'fb_AddThumbColumn' ); add_action( 'manage_pages_custom_column', 'fb_AddThumbValue', 5, 2 ); }