Can Swift 4's JSONDecoder be used with Firebase Realtime Database?

Question

I am trying to decode data from a Firebase DataSnapshot so that it can be decoded using JSONDecoder.

I can decode this data fine when I use a URL to access it with a

Answer 1

If your data type is Codable you can use the following solution to decode directly. You do not need any plugin. I used the solution for Cloud Firestore.

import Firebase
import FirebaseFirestoreSwift


let db = Firestore.firestore()
let query = db.collection("CollectionName")
            .whereField("id", isEqualTo: "123")

guard let documents = snapshot?.documents, error == nil else {
    return
}

if let document = documents.first {
    do {
        let decodedData = try document.data(as: ModelClass.self) 
        // ModelClass a Codable Class

    }
    catch let error {
        // 
    }
}