Create User in firebase - Realtime Database - swift

Question

I stuck with creating a Firebase User.
After creating my database looks like this
I created a struct User but I don't know how to create the correct dictionary
struct User {
let email : String
let name : String
let lastname : String
let phone : String
let password : String
let uid: String
let car : [Car]
init(uid: String, dictionary: [String: Any] ) {
self.uid = uid
self.email = dictionary["email"] as? String ?? ""
self.name = dictionary["name"] as? String ?? ""
self.lastname = dictionary["lastname"] as? String ?? ""
self.phone = dictionary["phone"] as? String ?? ""
self.password = dictionary["password"] as? String ?? ""
self.car = dictionary["car"] as? String ?? "" <- this is wrong
}
struct Car {
let firstCar : [FirstCar]}
struct FirstCar {
let brandName : String
let capacity : String
let carName : String
let fueal : String
let model : String
let power : String
let year : String}
help

Answer 1

I think you're asking about how to populate the User object from the Realtime Database when there's a child node involved that is also a key: value pair.
My suggestion is to keep Firebase 'firebasey' as long as possible by using DataSnapshots and not cast to dictionaries; it makes getting data from child nodes much easier and cleaner.
Here's and example of reading a users node from Firebase
var userArray = [UserClass]()
func readAllUsers() {
let usersRef = self.ref.child("users") //self.ref points to my firebase
usersRef.observeSingleEvent(of: .value, with: { snapshot in
for child in snapshot.children.allObjects as! [DataSnapshot] {
let user = UserClass(userSnap: child)
self.userArray.append(user)
}
})
}
and then the UserClass with a child key: value pair with a car brand as a child
class UserClass {
var key = ""
var userName = ""
var userEmail = ""
var type = ""
var brand = ""
convenience init(userSnap: DataSnapshot) {
self.init()
self.key = userSnap.key
self.userName = userSnap.childSnapshot(forPath: "name").value as? String ?? "No Name"
self.userEmail = userSnap.childSnapshot(forPath: "email").value as? String ?? "No email"
let carSnap = userSnap.childSnapshot(forPath: "car") //retuns the car node
let firstCarSnap = carSnap.childSnapshot(forPath: "firstCar") //return the firstCar node
self.brand = firstCarSnap.childSnapshot(forPath: "brandName").value as? String ?? "No Brand"
}
}
It's a good idea to store users by their uid and also keep track of that in the object in case you need to reference that user or update their node elsewhere in your code.
Note this line in the above code
for child in snapshot.children.allObjects as! [DataSnapshot]
preserves the ordering of the users when they are read in.