Filtering Realm objects with Swift

Question

I always get the following error when trying to filter my Realm database using NSPredicate:

Property 'text' is not a link in object of type 'getType'

I want to filter my Realm database to show only the items that have some specific text in them. This is what I've tried:

let realm = try! Realm()
let predicate = NSPredicate(format: "typez.text.filter = 'special'")
let filterThis = realm.objects(Publication).filter(predicate)
print(filterThis)

The relevant portion of my model classes is:

class Publication: Object, Mappable {
    dynamic var id: Int = 0
    var typez = List<getType>()
    dynamic var url: String?
}

class getType: Object, Mappable {
    dynamic var text: String = ""
}

Answer 1

You mentioned that the relevant portions of you model classes look like so:

class Publication: Object, Mappable {
    dynamic var id: Int = 0
    var typez = List<getType>()
    dynamic var url: String?
}

class getType: Object, Mappable {
    dynamic var text: String = ""
}

If I understand you correctly, you want to find Publication instances that have an entry in their typez list with text equal to special. You can express that as:

let realm = try! Realm()
let result = realm.objects(Publication).filter("ANY typez.text = 'special'")
print(result)