WordPress hook after adding/updating post AND after insertion of post meta?

custom-post-type, hook, wordpress

Solution

There is an undocumented hook called `updated_post_meta` that does what I need.

It will pass 4 parameters to the hooked function: the meta ID, the object ID (same as the post ID), the meta key, and the meta value. In my hooked function I check to see if the meta key name is the field that I need the value of and, if so, it proceeds.

Here's what it looks like:

/**
 * Use value of post meta for something when the post 
 * meta changes
 * @param  integer $meta_id    ID of the meta data field
 * @param  integer $post_id    Post ID
 * @param  string $meta_key    Name of meta field
 * @param  string $meta_value  Value of meta field
 */
function saveYouTubeInfo($meta_id, $post_id, $meta_key='', 
                                             $meta_value=''){

    // Stop if not the correct meta key
    if ( $meta_key != 'my_meta_field_name') {
        return false;
    }

    // Function code goes here.
}

add_action('updated_post_meta', 'saveYouTubeInfo', 10, 4);

By the way, unlike `added_post_meta`, you do not replace `post` with the post type that you are targeting. In my case, the name of the post type is `videos`, but I still had to use `updated_post_meta` and NOT `updated_videos_meta`.

Problem

I have a custom post type called "videos", which also has a few custom fields defined. Upon creating or updating a "videos" post, I would like to run a function. Unfortunately, this function needs the values of the post meta data for the post that I've just created, and the usual hooks (`save_post`,`publish_post`, etc.) seem to run before the post meta is inserted into the database, so it isn't available. If I manually update the post just by clicking "Publish" without making any changes, function works properly. Is there a hook that fires later in the process, after all metadata has been inserted?

Original source