running function during post save and adding variable to post meta

Question

I'm creating a page that is pulling info from Vimeo using oEmbed. Everything works fine but the multiple calls to vimeo are causing page load issues (obviously).

I was wondering if it would be possible to make the same oEmbed call when the post is being created/saved, then populating various post meta variables with the information.

Answer 1

Yes, most definitely. Take this skeleton code below as a base for a function that would do what you want, and place it in your functions.php:

function your_vimeo_meta_function ($post_id) {

    // some verifications first
    if ( $post_id == null || empty($_POST) )
        return;

    if ( !isset( $_POST['post_type'] ) || $_POST['post_type']!='post' )  
        return; 

    if ( wp_is_post_revision( $post_id ) )
        $post_id = wp_is_post_revision( $post_id );

    global $post;  
    if ( empty( $post ) )
        $post = get_post($post_id);

    /* 
     * do your vimeo stuff here 
     */

    update_post_meta($post_id, 'your_vimeo_key_name', $your_vimeo_value);
    // if this key doesn't exist, it will be created. If it exists, it will be updated
}
add_action('save_post', 'your_vimeo_meta_function', 12 );