instanceToPermissionName($subject); //If permission name is null, then the subject is not supported return ($permission_name !== null) && $this->resolver->isValidOperation($permission_name, $attribute); } /** * Maps a instance type to the permission name. * @param $subject mixed The subject for which the permission name should be generated. * @return string|null The name of the permission for the subject's type or null, if the subject is not supported. */ protected function instanceToPermissionName($subject) : ?string { $class_name = get_class($subject); switch ($class_name) { case AttachmentType::class: return 'attachment_types'; case Category::class: return 'categories'; case Device::class: return 'devices'; case Footprint::class: return 'footprints'; case Manufacturer::class: return 'manufacturers'; case Storelocation::class: return 'storelocations'; case Supplier::class: return 'suppliers'; case Currency::class: //TODO: Implement own permission return 'suppliers'; case MeasurementUnit::class: //TODO: Implement own permission return 'suppliers'; } //When the class is not supported by this class return null return null; } /** * Similar to voteOnAttribute, but checking for the anonymous user is already done. * The current user (or the anonymous user) is passed by $user. * * @param $attribute * @param $subject * @param User $user * * @return bool */ protected function voteOnUser($attribute, $subject, User $user): bool { $permission_name = $this->instanceToPermissionName($subject); //Just resolve the permission return $this->resolver->inherit($user, $permission_name, $attribute) ?? false; } }