USER_EUF shortcode is not working with field database type

[Jimmi08]

Bug Description

UEF database type is not rendered in admin area and with single USER_EUF shortcode. It is rendered with {USER_EXTENDED_ALL} shortcode

How to Reproduce

Steps to reproduce the behavior:

1. Add custom field f.e. test, set database type and select f.e. news_category table.
2. Add to user and select something
3. In admin area add it as user column - nothing is displayed
4. add shortcode to user_template f.e. ` *** here: {USER_EUF: field=test}

   ---

               {USER_EXTENDED_ALL}`

Expected Behavior

A clear and concise description of what you expected to happen.

Screenshots

UEF:

admin column display nothing

user profile display nothing, only second all shortcode data are displayed (to check it isset correctly)

PHP Version

PHP 7.4

The reason for frontend:

            case EUF_DB_FIELD :        // check for db_lookup type
                if(!isset($fieldname))
                {
                    return null;
                }

                $structValues = $this->getFieldValues($fieldname);

$fieldname is not set at all.

Attempt to fix: added 3rd parameter return $ext->renderValue($val,$type, $fld); + public function renderValue($value, $type=null, $fieldname = '') It worked. No idea if it changes something for other types.