Codex

Plugin API/Action Reference/delete post

Contents

Description

delete_post is fired before and after a post (or page) is deleted from the database.

However by this time the post comments, attachments and metadata have been already deleted. Use the before_delete_post hook to catch post deletion before that.

Definitions

/wp-includes/post.php - pre-deletion
(#2041) (integer) The $postid parameter is the same value that was passed to wp_delete_post().
Hook: do_action( 'delete_post', $postid );
/wp-includes/post.php - post-deletion
(#2043) (integer) The $postid parameter is the same value that was passed to wp_delete_post().
Hook: do_action( 'deleted_post', $postid );

Example

Let's suppose you have a plugin that, for one reason or another, stores its own post metadata in a separate database table called codex_postmeta. One of the ways you can achieve a synchronous synchronisation is to be made aware when a post is deleted so that you can replicate the changes yourself.

 <?php
add_action('admin_init', 'codex_init');
function codex_init() {
  if (current_user_can('delete_posts')) add_action('delete_post', 'codex_sync', 10);
}

function codex_sync($pid) {
  global $wpdb;
  if ($wpdb->get_var($wpdb->prepare('SELECT post_id FROM codex_postmeta WHERE post_id = %d', $pid))) {
    return $wpdb->query($wpdb->prepare('DELETE FROM codex_postmeta WHERE post_id = %d', $pid));
  }
  return true;
}
?>

Related

wp_delete_post() before_delete_post()

Retrieved from "http://codex.wordpress.org/Plugin_API/Action_Reference/delete_post"

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