[BUG] null values do no pass validation

[Georges_Jamous (Georges)]

Synced unset Keys from device yield null in database. And null fails validation if you attempt to edit this object later using cloud functions.

{
  someKey: {
   "bsonType": "object",
      "properties": {
        "url": {
          "bsonType": "string"
        }
      },
      "required": [],
      "title": "FileObject"
 }
}

iOS client code

class FileObject: RealmObject {
   .....
   var url: String?
}
let file = FileObject()
file.url = nil // maybe I am editing an existing file and removing the url
someObject = file

in database (after SYNC from iOS Client)

{
  ...,
  someKey: {
     url: null 
  }
}

Then if I attempt to edit this object in cloud-function or if I run schema validation in Atlas, I get an error “InvalidTypeError” on url, because it suppose to not exist, but it is null which is not a string.

So JSON validation should accept null and consider the field non existent for primitive types

[Georges_Jamous (Georges)]

Found the solution in AppSetting, Null type check can be disabled