add_filter “acf/validate_save_post” and acf_add_validation_error

• Sam

• September 17, 2023 at 3:59 am

Sup guys!

I need some explications please! I’m trying to understand how I can display a custom error message from custom validation and highlight specific fields that have this error.

I use acf_form for display my form and I have this code for the validation:
https://pastebin.com/f4qnmnbB

In this code, I’m sure the variables $email and $confirmEmail work’s good. I’m sure too that the “acf_add_validation_error” function “work” because if it not there, the form pass.

I have try this too
acf_add_validation_error('field_65067bde5086e', 'ok')

I can’t determine why, the “ok” message’s not displayed and the specific field don’t highlight.

Is there something I don’t understand?

Could you help me understand better please hehe?

Thanks guys!

• Sam

• September 17, 2023 at 8:36 am

EDIT: I was wrong, forget this second post.

• John Huebner

• September 17, 2023 at 9:45 am

You are probably using the wrong method to validate values. I would suggest using acf/validate_value

• Sam

• September 17, 2023 at 10:13 am

Hello John ( @hube2 )! A really big thank you!

Does this method just allow me to check one field at a time or can I verify that my “email” field and my “email confirmation” field are the same at the same time?

(sorry for my bad english)

• John Huebner

• September 17, 2023 at 10:22 am

You can compare fields the same way, buy looking at the values in $_POST[‘acf’] to look at other values.

I am assuming by looking at these that the fields are sub fields of a group field

$email = $_POST['acf']['field_65067bd15086d']['field_65067bde5086e'];
$confirmEmail = $_POST['acf']['field_65067bd15086d']['field_65067e4f26db1'];

You can do the same thing or you can depend on the $value passed by ACF and compare it to the other value.

• Sam

• September 18, 2023 at 8:54 am

Thanks @hube2!

I haven’t tested it yet, but I’ll let you know!

• Sam

• September 18, 2023 at 11:33 am

Works perfectly!

Thanks Chief 💪

• Sam

• September 18, 2023 at 11:34 am

Here is an example for people who want to understand:

add_filter('acf/validate_value/key=field_65067bde5086e', 'checkEmails', 10, 4);
add_filter('acf/validate_value/key=field_65067e4f26db1', 'checkEmails', 10, 4);

function checkEmails($valid, $value, $field, $input_name){

    if(!isset($_POST['acf']['field_65067bd15086d'])) return $valid;

    $email = $_POST['acf']['field_65067bd15086d']['field_65067bde5086e'];
    $confirmEmail = $_POST['acf']['field_65067bd15086d']['field_65067e4f26db1'];

    if(
        !filter_var($email, FILTER_VALIDATE_EMAIL)

        ||

        $email !== $confirmEmail
    ){

        return 'test';
    }

    return $valid;
}