When you click on the pencil icon, you get an option/window to “Edit Image” and a button that says “Update Image”. I’d like to be able to update the file name of an image using its title field (ex: if an image filename is “picture.jpg” I’d like to use the title “Yellow Flower” to update it to “yellow_flower.jpg”). I’m guessing that you have to use some hook for when you tap on the “Update Image” button but I haven’t found it online. Does one exist and if not how would I go on about doing this?
An answer to this would be great
Editing an image is part of WP core and not part of ACF. ACF just implements functionality that is already there. If there is a hook for after an image is edited then this hook would be found in WP.
Just at a guess I would assume the WP “post_updated” hook or perhaps the more specific “save_post_{$post_type}” hook which would be “save_post_attachment” for images.
