Possible to reference grouped field by field_key in acf/save_post?

• devdavid

• March 27, 2018 at 5:29 pm

I’m trying to use a field key for a field in a group with the acf/save_post action to set/update a post title. It was working as documented for a simple text field, but I’m not able to figure out how to reference a grouped field by its key.

I tried to reference the sub field of the group directly, and tried to reference the group then the sub field (i.e. [‘acf’][‘field_123456789a’]_[‘field123456789b’]), but it didn’t seem to work. Is there a syntax for this, or have I just got it all wrong?

For reference:
before (this was working when it was just a text field)
($_POST['acf']['field_123456789a'])

after (not working after I put the text field into a group)
($_POST['acf']['field_123456789a']_['field123456789b'])

• rslater

• September 21, 2018 at 2:18 am

I doubt it’s as easy as a typo, but…

($_POST[‘acf’][‘field_123456789a’]_[‘field123456789b’])

Check the real code and make sure that underscore isn’t actually there between the two bracketed key refernces, so:

($_POST[‘acf’][‘field_123456789a’][‘field123456789b’])