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November 6, 2021 06:55
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WordPress function: Duplicate page without plugin
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| <?php | |
| /* | |
| * Function for post duplication. Dups appear as drafts. User is redirected to the edit screen | |
| */ | |
| function rd_duplicate_page_as_draft(){ | |
| global $wpdb; | |
| if (! ( isset( $_GET['post']) || isset( $_POST['post']) || ( isset($_REQUEST['action']) && 'rd_duplicate_page_as_draft' == $_REQUEST['action'] ) ) ) { | |
| wp_die('No post to duplicate has been supplied!'); | |
| } | |
| /* | |
| * Nonce verification | |
| */ | |
| if ( !isset( $_GET['duplicate_nonce'] ) || !wp_verify_nonce( $_GET['duplicate_nonce'], basename( __FILE__ ) ) ) | |
| return; | |
| /* | |
| * get the original post id | |
| */ | |
| $post_id = (isset($_GET['post']) ? absint( $_GET['post'] ) : absint( $_POST['post'] ) ); | |
| /* | |
| * and all the original post data then | |
| */ | |
| $post = get_post( $post_id ); | |
| /* | |
| * if you don't want current user to be the new post author, | |
| * then change next couple of lines to this: $new_post_author = $post->post_author; | |
| */ | |
| $current_user = wp_get_current_user(); | |
| $new_post_author = $current_user->ID; | |
| /* | |
| * if post data exists, create the post duplicate | |
| */ | |
| if (isset( $post ) && $post != null) { | |
| /* | |
| * new post data array | |
| */ | |
| $args = array( | |
| 'comment_status' => $post->comment_status, | |
| 'ping_status' => $post->ping_status, | |
| 'post_author' => $new_post_author, | |
| 'post_content' => $post->post_content, | |
| 'post_excerpt' => $post->post_excerpt, | |
| 'post_name' => $post->post_name, | |
| 'post_parent' => $post->post_parent, | |
| 'post_password' => $post->post_password, | |
| 'post_status' => 'draft', | |
| 'post_title' => $post->post_title, | |
| 'post_type' => $post->post_type, | |
| 'to_ping' => $post->to_ping, | |
| 'menu_order' => $post->menu_order | |
| ); | |
| /* | |
| * insert the post by wp_insert_post() function | |
| */ | |
| $new_post_id = wp_insert_post( $args ); | |
| /* | |
| * get all current post terms ad set them to the new post draft | |
| */ | |
| $taxonomies = get_object_taxonomies($post->post_type); // returns array of taxonomy names for post type, ex array("category", "post_tag"); | |
| foreach ($taxonomies as $taxonomy) { | |
| $post_terms = wp_get_object_terms($post_id, $taxonomy, array('fields' => 'slugs')); | |
| wp_set_object_terms($new_post_id, $post_terms, $taxonomy, false); | |
| } | |
| /* | |
| * duplicate all post meta just in two SQL queries | |
| */ | |
| $post_meta_infos = $wpdb->get_results("SELECT meta_key, meta_value FROM $wpdb->postmeta WHERE post_id=$post_id"); | |
| if (count($post_meta_infos)!=0) { | |
| $sql_query = "INSERT INTO $wpdb->postmeta (post_id, meta_key, meta_value) "; | |
| foreach ($post_meta_infos as $meta_info) { | |
| $meta_key = $meta_info->meta_key; | |
| if( $meta_key == '_wp_old_slug' ) continue; | |
| $meta_value = addslashes($meta_info->meta_value); | |
| $sql_query_sel[]= "SELECT $new_post_id, '$meta_key', '$meta_value'"; | |
| } | |
| $sql_query.= implode(" UNION ALL ", $sql_query_sel); | |
| $wpdb->query($sql_query); | |
| } | |
| /* | |
| * finally, redirect to the edit post screen for the new draft | |
| */ | |
| wp_redirect( admin_url( 'post.php?action=edit&post=' . $new_post_id ) ); | |
| exit; | |
| } else { | |
| wp_die('Post creation failed, could not find original post: ' . $post_id); | |
| } | |
| } | |
| add_action( 'admin_action_rd_duplicate_page_as_draft', 'rd_duplicate_page_as_draft' ); | |
| /* | |
| * Add the duplicate link to action list for post_row_actions | |
| */ | |
| function rd_duplicate_page_link( $actions, $post ) { | |
| if (current_user_can('edit_posts')) { | |
| $actions['duplicate'] = '<a href="' . wp_nonce_url('admin.php?action=rd_duplicate_page_as_draft&post=' . $post->ID, basename(__FILE__), 'duplicate_nonce' ) . '" title="Duplicate this item" rel="permalink">Duplicate</a>'; | |
| } | |
| return $actions; | |
| } | |
| add_filter( 'page_row_actions', 'rd_duplicate_page_link', 10, 2); |
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It's essentially the same as the duplicate post function, except for renaming the
rd_duplicate_post_tord_duplicate_page_and declaring a different filter on the last line.