Hi,

im having problems with the following function:

    public function filterFields($fields, $context = null)
    {
        if (!$backendUser = BackendAuth::getUser())
            throw new \Exception('No admin logged in');

        $authorChangeAllowed = $backendUser->hasPermission('vendor.plugin.manage_all_news');

        // dd($fields->author);
        if ($authorChangeAllowed) {
            $fields->author->hidden = false;
        } else {
            $fields->author->hidden = true;
        }
    }

As described in the docs, the function allows for additional form field filtering. What I'm doing is quite obvious, restricting a single field (author - type: relation) from being visible by setting the hidden property of the field. For some reason I get the following PHP warning/error Creating default object from empty value. What's wrong with the code?

Regards Jakob

Last updated 8 years ago

Strangely in another model class I'm doing almost the same thing and have no problems:

    public function filterFields($fields, $context = null)
    {
        if ($fields->status->value === 'invited') {
            $fields->appointment_description->hidden = false;
        } else {
            $fields->appointment_description->hidden = true;
        }
    }

The filterFields method is used recursively on the fields of a (in this case also present) repeater field. That's why some class properties named after fields are not present.

Everything is explained here: https://github.com/octobercms/october/issues/1792