Do not save some field on database

• rdourado

• December 7, 2017 at 1:08 am

I am using ACF as a ‘frontend form generator’. I need to get credit card information, but I cannot save it on database at all. I’ll just get the post data and send it to a external API.

So, how do I block certain fields to get saved on database? Is it possible?

• John Huebner

• December 8, 2017 at 6:04 am

You need to delete the value from $_POST['acf'] before ACF saves the value.

This means either an acf/pre_save_post filter or an acf/save_post filter with a priority < 10.

after doing what you need to do with the value

unset($_POST['acf']['field_123456']); // or whatever your field key is

• rdourado

• February 4, 2018 at 1:13 am

I solved it this way:
add_filter( 'acf/update_value/name=card_number', '__return_null' );