Wrong extraction of some properties

[d-yurchenko]

Was testing simple struct:

struct Foo: Realmable {
    
    let id: Int
    let name: String
    let readOnly: Bool
    let enabled: Bool
    
    static func primaryKey() -> String? {
        return "id"
    }
    
    init(id: Int, name: String, readOnly: Bool, enabled: Bool) {
        self.id = id
        self.name = name
        self.readOnly = readOnly
        self.enabled = enabled
    }
    
    init() {
        self.init(id: -1, name: "", readOnly: true, enabled: false)
    }
}

like this:

guard let realm = try? Realm() else { return }
let foo = Foo(id: 0, name: "test name", readOnly: false, enabled: true)
try? realm.write {
    realm.add(foo)
}
let foos = realm.objects(Foo.self).map({ $0 })

Found out problem with extracting properties with 0 or false value. Problem appears at this func:

guard let value = obj.value(forKey: propertyName) fails for such properties and they left default:

[arturdev]

Instead of this
self.init(id: -1, name: "", readOnly: true, enabled: false)
do this:

struct Foo: Realmable {
    
    let id: Int = -1
    let name: String = ""
    let readOnly: Bool = false
    let enabled: Bool = false
    
    static func primaryKey() -> String? {
        return "id"
    }
    
    init(id: Int, name: String, readOnly: Bool, enabled: Bool) {
        self.id = id
        self.name = name
        self.readOnly = readOnly
        self.enabled = enabled
    }
    
    init() {
    }
}

[d-yurchenko]

You can do this only with var properties, otherwise you'll have an error "Immutable value 'self.id' may only be initialized once".

Even then the problem won't be solved, mutating func readValues(from obj: Object) is from Unrealm.swift. In Objc 0 == nil, and obj.value(forKey: propertyName) returns nil instead of 0. I guess this func doesn't have to work like this.

You can define default value as 0, but this is crutch.

[d-yurchenko]

struct Foo: Realmable {
    
    var id: Int = -1
    var name: String = ""
    var readOnly: Bool = true
    var enabled: Bool = false
    
    static func primaryKey() -> String? {
        return "id"
    }
    
    init(id: Int, name: String, readOnly: Bool, enabled: Bool) {
        self.id = id
        self.name = name
        self.readOnly = readOnly
        self.enabled = enabled
    }
    
    init() {}
}

This is the result for your variant. Unrealm still couldn't read 0 from obj: Object

[arturdev]

Could you please provide a minimal reproducible example project so that I can run it locally and test/fix?

[d-yurchenko]

I've managed to fix problem with Int and Bool values (actually don't sure how good is my solution), but there's still problem with Float.

In Podfile set path to my forked repo, remove it to test it with origin.

Unrealm_test.zip