Hello,
I was searching for how to add a feature image through ACF Form, but I ended up here, and this helped me to find the solution.
I hope this helps you.
add_action('acf/save_post', 'acf_set_featured_image');
function acf_set_featured_image($post_id){
$value = get_field('post_image', $post_id);
if($value != ''){
add_post_meta($post_id, '_thumbnail_id', $value);
}
return $value;
}
This action check if you updated the field “post_image” from a frontend form and update the feature image with the same image.
