在 WordPress 后台文章列表中，如果能直接复制一篇文章或页面，然后重新编辑后发表，是不是很方便。那为什么不全选复制文章内容，然后粘贴到新建文章中呢？这是因为这样做仅复制了文章内容，并未同时把原文章的相关信息一同复制过去，比如一些自定义字段等。文章源自知更鸟-https://zmingcx.com/duplicate-post-in-wordpress.html
利用本文的一段代码，可以实现快速复制克隆一份文章，并保留原文章的所有信息。文章源自知更鸟-https://zmingcx.com/duplicate-post-in-wordpress.html
将代码添加到当前主题函数模板 functions.php 中：文章源自知更鸟-https://zmingcx.com/duplicate-post-in-wordpress.html
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// 复制文章
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function zm_clone_post_as_draft() {
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global $wpdb;
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if (! ( isset( $_GET['post']) || isset( $_POST['post']) || ( isset($_REQUEST['action']) && 'zm_clone_post_as_draft' == $_REQUEST['action'] ) ) ) {
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wp_die('No post to clone has been supplied!');
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}
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// Nonce 验证
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if ( !isset( $_GET['clone_nonce'] ) || !wp_verify_nonce( $_GET['clone_nonce'], basename( __FILE__ ) ) )
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return;
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// 获取原文章ID
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$post_id = (isset($_GET['post']) ? absint( $_GET['post'] ) : absint( $_POST['post'] ) );
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// 所有文章数据
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$post = get_post( $post_id );
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// 如果不希望当前用户作为新文章作者，将下两行替换为$new_post_author = $post->post_author;
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$current_user = wp_get_current_user();
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$new_post_author = $current_user->ID;
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// 如果发布数据存在，则创建发布克隆
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if (isset( $post ) && $post != null) {
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// 创建新文章数组
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$args = array(
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'comment_status' => $post->comment_status,
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'ping_status' => $post->ping_status,
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'post_author' => $new_post_author,
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'post_content' => $post->post_content,
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'post_excerpt' => $post->post_excerpt,
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'post_name' => $post->post_name,
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'post_parent' => $post->post_parent,
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'post_password' => $post->post_password,
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'post_status' => 'draft',
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'post_title' => $post->post_title,
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'post_type' => $post->post_type,
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'to_ping' => $post->to_ping,
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'menu_order' => $post->menu_order
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);
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// 通过wp_insert_post() 函数添加文章
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$new_post_id = wp_insert_post( $args );
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// 将新的文章设置为草稿
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$taxonomies = get_object_taxonomies($post->post_type); // 返回文章类型的分类数组，例如：array("category", "post_tag");
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foreach ($taxonomies as $taxonomy) {
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$post_terms = wp_get_object_terms($post_id, $taxonomy, array('fields' => 'slugs'));
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wp_set_object_terms($new_post_id, $post_terms, $taxonomy, false);
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}
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// 查询复制所有文章信息 post meta
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$post_meta_infos = $wpdb->get_results("SELECT meta_key, meta_value FROM $wpdb->postmeta WHERE post_id=$post_id");
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if (count($post_meta_infos)!=0) {
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$sql_query = "INSERT INTO $wpdb->postmeta (post_id, meta_key, meta_value) ";
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foreach ($post_meta_infos as $meta_info) {
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$meta_key = $meta_info->meta_key;
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if( $meta_key == '_wp_old_slug' ) continue;
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$meta_value = addslashes($meta_info->meta_value);
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$sql_query_sel[]= "SELECT $new_post_id, '$meta_key', '$meta_value'";
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}
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$sql_query.= implode(" UNION ALL ", $sql_query_sel);
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$wpdb->query($sql_query);
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}
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wp_redirect( admin_url( 'edit.php?post_type='.$post->post_type ) );
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exit;
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} else {
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wp_die('Post creation failed, could not find original post: ' . $post_id);
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}
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}
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add_action( 'admin_action_zm_clone_post_as_draft', 'zm_clone_post_as_draft' );
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// 复制文章并添加到列表
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function zm_clone_post_link( $actions, $post ) {
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if (current_user_can('edit_posts')) {
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$actions['clone'] = '<a href="' . wp_nonce_url('admin.php?action=zm_clone_post_as_draft&post=' . $post->ID, basename(__FILE__), 'clone_nonce' ) . '" title="Clone this '.$post->post_type.'" rel="permalink">复制</a>';
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}
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return $actions;
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}
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add_filter( 'post_row_actions', 'zm_clone_post_link', 10, 2 );
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add_filter('page_row_actions', 'zm_clone_post_link', 10, 2);
之后，进入WP后台 → 文章 → 所有文章，在文章标题下面会增加“复制”按钮，点击后会复制一份完全相同、状态为草稿的文章，同时支持页面及自定义文章类型。文章源自知更鸟-https://zmingcx.com/duplicate-post-in-wordpress.html
如果不想使用代码。可以安装使用相似功能的插件：Post Duplicator 与Yoast Duplicate Post
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