BookStack\Services\PermissionService::deleteManyJointPermissionsForEntities PHP Method

    protected function deleteManyJointPermissionsForEntities($entities)
    {
        $query = $this->jointPermission->newQuery();
        foreach ($entities as $entity) {
            $query->orWhere(function ($query) use($entity) {
                $query->where('entity_id', '=', $entity->id)->where('entity_type', '=', $entity->getMorphClass());
            });
        }
        $query->delete();
    }