<?php
if (!defined('ABSPATH')) exit; // if direct access
function wcps_duplicate_post_as_draft()
{
global $wpdb;
if (!(isset($_GET['post']) || isset($_POST['post']) || (isset($_REQUEST['action']) && 'wcps_duplicate_post_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 . ' - Copy of #' . $post_id,
'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
*/
// Copy post metadata
$data = get_post_custom($post_id);
foreach ($data as $key => $values) {
foreach ($values as $value) {
add_post_meta($new_post_id, $key, maybe_unserialize($value)); // it is important to unserialize data to avoid conflicts.
}
}
$wcps_options = get_post_meta($post_id, 'wcps_options', true);
if (!empty($wcps_options['content'])) {
$content = [];
$now = time();
$i = 0;
foreach ($wcps_options['content'] as $index => $item) {
$content[$now . $i] = $item;
$i++;
}
$wcps_options['content'] = $content;
update_post_meta($post_id, 'wcps_options', $wcps_options);
}
/*
* 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: ' . $post_id);
}
}
add_action('admin_action_wcps_duplicate_post_as_draft', 'wcps_duplicate_post_as_draft');
/*
* Add the duplicate link to action list for post_row_actions
*/
function wcps_duplicate_post_link($actions, $post)
{
if (current_user_can('edit_posts') && $post->post_type == 'wcps') {
$actions['duplicate'] = '<a href="' . wp_nonce_url('admin.php?action=wcps_duplicate_post_as_draft&post=' . $post->ID, basename(__FILE__), 'duplicate_nonce') . '" title="Duplicate this item" rel="permalink">Duplicate</a>';
}
return $actions;
}
add_filter('post_row_actions', 'wcps_duplicate_post_link', 10, 2);