As of September 2024, using Bricks 1.10.3, it is still not displaying the Groups in the builder. The groups are correctly being pulled when you hit Save in the Bricks > Settings > API keys section into the bricks_mailchimp_lists option field, but they don’t show up in the backend.
They are probably supposed to load asynchronously, looking at the source code of form.php:
'options' => [], // Populate in builder via 'mailchimpList' (PanelControl.vue)
So what I did was to add a bricks/elements/form/controls filter that populates the options from the database. Using this filter will populate the Groups and they will be used when sending a subscription request to MailChimp.
add_filter('bricks/elements/form/controls', function($controls) {
if (isset($controls['mailchimpGroups']) && isset($controls['mailchimpGroups']['options']) && is_array($controls['mailchimpGroups']['options']) && empty($controls['mailchimpGroups']['options'])) {
$mailchimp_groups = [];
foreach (Bricks\Integrations\Form\Actions\Mailchimp::get_list_options() as $list) {
if (isset($list['groups']) && is_array($list['groups']) && !empty($list['groups'])) {
$mailchimp_groups += $list['groups'];
}
}
$controls['mailchimpGroups']['options'] = $mailchimp_groups;
}
return $controls;
});