/**
* Retrieve the filter field description given by field name.
*
* @param AdminInterface $admin
* @param string $field
*
* @return FormInterface
*
* @throws \RuntimeException
*/
private function retrieveFilterFieldDescription(AdminInterface $admin, $field)
{
$admin->getFilterFieldDescriptions();
$fieldDescription = $admin->getFilterFieldDescription($field);
if (!$fieldDescription) {
throw new \RuntimeException(sprintf('The field "%s" does not exist.', $field));
}
if (null === $fieldDescription->getTargetEntity()) {
throw new \RuntimeException(sprintf('No associated entity with field "%s".', $field));
}
return $fieldDescription;
}
