Multiple user acf_forms on one page with validation

• deejayfaggyfag

• December 28, 2016 at 7:07 am

I’ve looked through the forum and have seen something similar to my issue, but never quite the same. The closest that came to my issue was never resolved: https://support.advancedcustomfields.com/forums/topic/acf_form-id-not-being-set-from-args/

Anyway, here goes.

I have a frontend where multiple users are listed on a single page, each with their won acf_form. During validation, the values of the correct form are submitted, but the _acf_form and post_id values are always taken from the last form on the page. Here’s the simplified code:

<?php
foreach($users as $user) {
  acf_form(array(
    'id' => 'user-form-' . $user->ID,
    'post_id' => 'user_' . $user->ID,
    'fields' => array(
      'firstname',
      'lastname',
      'email'
    )
  ));
}

and then the verification hook:

function my_validate_value_email($valid, $value, $field, $input) {
  $user_id = substr($_POST['post_id'], 5);
  $user = get_user_by('email', $value);
  return $user && $user->ID != $user_id ? __('Email already exists', 'text-domain') : $valid;
}
add_filter('acf/validate_value/name=email', 'my_validate_value_email', 10, 4);

Now when I view the page, the form IDs are all correct, and the data is pre-filled correctly. But when I click on “save” for the first user, then the form data that is submitted for verification is correct except for post_id = user_{last-user-id}, meaning every time I just try to save a user that is not the last user in the list, then I get the “email already exists” error.

I’m using ACF Pro 5.5.3 if that helps.

• James

• December 28, 2016 at 11:36 am

Hi @deejayfaggyfag

That’s sure weird. Could you please open a new ticket so it can be passed to the plugin author? You can open a new ticket here: https://support.advancedcustomfields.com/new-ticket. Also, please don’t forget to explain the issue again and provide the link to this thread.

As a workaround, you can get the correct data from the _acf_form form data like this:

function my_validate_value_email($valid, $value, $field, $input) {
    
    // get the encrypted form data
    $data = acf_extract_var($_POST, '_acf_form');
    
    // decode the form data
    $data = @json_decode(base64_decode($data), true);
    
    // get the correct post ID
    $user_id = $data['post_id'];
    
    $user_id = substr($_POST['post_id'], 5);
    $user = get_user_by('email', $value);
    return $user && $user->ID != $user_id ? __('Email already exists', 'text-domain') : $valid;
}
add_filter('acf/validate_value/name=email', 'my_validate_value_email', 10, 4);

I hope this helps 🙂