Swift: getting error while decoding using CodingKey - ios

Question

I have created a model and I need to try to add value to one of the CodingKey's case
struct Model {
let name: String
let location: String
let descriptions: String
}
enum CodingKeys: String, CodingKey {
case name = "NAME"
case location = "LOCATION"
case descriptions = "INFO-\(NSLocalizedString("Language", comment: ""))"
}
init(from decoder: Decoder) throws {
let container = try decoder.container(keyedBy: CodingKeys.self)
.
.
descriptions = try container.decode(String.self, forKey: .descriptions)
}
Now compiler gives me this error
🛑 Raw value for enum case must be a literal
How can I fix this error?

Answer 1

You don't have to use an enum for CodingKeys. You can also use a struct with static lets. It's just a bit more boilerplate:
struct Model: Decodable {
let name: String
let location: String
let descriptions: String
struct CodingKeys: CodingKey {
let intValue: Int? = nil
let stringValue: String
init(stringValue: String) {
self.stringValue = stringValue
}
init?(intValue: Int) {
return nil
}
static let name = CodingKeys(stringValue: "name")
static let location = CodingKeys(stringValue: "location")
static let description = CodingKeys(stringValue: "INFO-\(NSLocalizedString("Language", comment: ""))")
}
init(from decoder: Decoder) throws {
let container = try decoder.container(keyedBy: CodingKeys.self)
name = try container.decode(String.self, forKey: .name)
location = try container.decode(String.self, forKey: .location)
descriptions = try container.decode(String.self, forKey: .description)
}
}