Reply To: Google Maps field needs setting to add API key

• fabianmarz

• December 9, 2016 at 4:23 am

As I was looking through the source code I found this filter in the get_setting() function

[…]
// filter for 3rd party customization
if( substr($name, 0, 1) !== '_' ) {
  $value = apply_filters( "acf/settings/{$name}", $value );
}
[…]

So you could simply add a filter like this:

add_filter('acf/settings/google_api_key', function ($value) {
  return 'YOUR_API_KEY';
});