Invalid value when query on Int in realm - swift

Question

I have a realm declaration like that :
#objc dynamic var roomId = UUID().uuidString
#objc dynamic var roomName = ""
#objc dynamic var roomType = ""
#objc dynamic var floor = 1
#objc dynamic var placeId : String?
I am trying to get a query of all rooms for a specific floor in a specific place from realm DB with this function :
static func getAllRoomNamesAndTypesForQuery (placeName: String? ,room : String? , floor : Int?) -> [[String]] {
var result : [[String]] = [[]]
if placeName != nil , floor != nil {
let placeId = Places.specificPlaceQueries(placeName: placeName)[0] as! String
let allRooms = Users.realm.objects(Rooms.self).filter("placeId == '\(placeId)' AND floor == '\(floor!)'")
var roomNames = [""]
var roomTypes = [""]
for number in 0..<allRooms.count {
roomNames.append(allRooms[number].roomName)
roomTypes.append(allRooms[number].roomType)
}
let sortedRoomNames = roomNames.sorted()
let sortedRoomTypes = roomTypes.sorted()
result = [sortedRoomNames , sortedRoomTypes]
}
return result
}
but it keeps showing me the following strange error
Expected object of type int for property 'floor' on object of type
'Rooms', but received: 1
I dunno how it rejects 1 as Int ?? anyone know where is the problem here??

Answer 1

You shouldn't be using String interpolation when creating NSPredicates, since even though it is supported, it is really easy to mess up the predicate format. Simply use %# for substituting variable values into the predicate.
let allRooms = Users.realm.objects(Rooms.self).filter("placeId == %# AND floor == %#",placeId, floor)
Some further improvements to your code: don't use nil check, then force unwrapping, use optional binding when working with Optionals.
if let placeName = placeName , let floor = floor {
Also don't add an initial value to Arrays when creating them, instead of var roomNames = [""] and var roomTypes = [""], do
var roomNames = [String]()
var roomTypes = [String]()

Answer 2

Can you try
let allRooms = Users.realm.objects(Rooms.self).filter {
$0.placeId == placeId
&& $0.floor == floor
}

Answer 3

First :
set this
var roomNames = [""];
var roomTypes = [""];
to this
var roomNames = [String]()
var roomTypes = [String]()