Decoding empty JSON string value into nil with Codable

[WingCH]

normal case:

{
    "maintenance": true
}

{
    "maintenance": false
}

If there is no maintenance station then it will become empty string

{
    "maintenance": ""
}

i want to have nil if maintenance is empty string in json

struct Demo: Codable {
    var maintenance: Bool?
}

Is there a good way to do it?

[GottaGetSwifty]

I think something like this should work, no testing done though:

struct NilBoolFallback: FallbackValueProvider {
    public static var defaultValue: Bool? { nil }
}

@FallbackDecoding<NilBoolFallback>
var maintenance: Bool?

The idea being if it's anything other than a Bool (and thus fails to decode) it will use the defaultValue

[GottaGetSwifty]

@WingCH Re-open if you have any more questions