For example : one field is a number of beds I want, the other field “Hotel” has a post object select field (and this post has a meta data “beds_available”).
Is it possible to validate the hotel field to compare the available beds with the “wanted_beds” field?
That way It could return an invalid error saying “The hotel you want does not have this many beds available” or something like that.
Yes it is, but you need to access the value of the other field from the $_POST[‘acf’] array by its field key, example: $_POST['acf']['field_XXXXXXX']
Amazing ! As simple as that !
Many thanks. I would have never thought about this and did not see this mentioned in the docs. That’d make a good example to make it simpler to understand this https://www.advancedcustomfields.com/resources/acf-validate_value/
thanks again!
