How do I populate one custom field with the user input from another?

• SaltedLevity

• September 29, 2020 at 3:05 am

Hi, I’m using the ACD oEmbed field for users to input a media link, like a YouTube url. I’m using Elementor’s page builder as well to select these fields as dynamic ones, and building a post display using them.
However Elementor doesn’t let me input the oEmbed entry into normal link places in objects. So, when I want to return the YouTube/other oEmbed url somewhere else as a link, I can’t.

I tried doing this:

function my_acf_save_post( $post_id ) {
$oembedurl = get_field('field_5f70e880548c4');
update_field( 'field_5f70e8805493a', $oembedurl );
}

Which technically works except that it’s updating the field with the full iframe embed code, and not just the url the user input.

Is there a way for me to get the url the user entered added to this new field?