Apparently this is not supposed to be done like this, or I’m just stupid 😀
I ended up sending the data along with my already sent custom JSON for my custom post type like this:
// Add ACF data to our update request, if available.
var acf_form = $('.has_acf #acf-form');
if(acf_form) {
// Serialize data in acf form.
var acf_data = $(acf_form).serializeArray();
// Apply every field to the data object, we're sending.
for(var i = 0; i < acf_data.length; i++) {
var field = acf_data[i];
data[field.name] = field.value;
}
}
Originally, I wanted to avoid doing anything more complicated on the PHP side, but it turned out to be quite easy. I added the following statements to the new and update ajax methods:
// Update ACF Fields
if( function_exists( 'update_field' ) && isset( $_POST['acf'] ) ) {
foreach( $_POST['acf'] as $field_name => $field_value ) {
update_field( $field_name, esc_attr( $field_value ), $post_id );
}
}
It seems to work fine 🙂 (I just want basic support, didn’t test repeaters and more complicated fields.)
