CODEWITHSUNDEEP
iosswiftfirebase-realtime-databaseswift5
BRDroid
BRDroid

Reputation: 4408

Getting list of users from firebase database

I want to get list of users from firebase, I am following a tutorial which is not using swift 5, but I am writing my code in swift 5. I am pretty new to swift and iOS development. How can I convert the following code to swift 5

I have a users in firebase database which ~I am trying to retrieve, and each user has email and name

User

class User: NSObject {
    var name: String?
    var email: String?
}

Trying to convert below code to swift 5

FIRDatabase.database().reference().child(“users”).observeEventType(.ChildAdded, withBlock: { (snapshot) in
   If let dictionary = snapshot.value as? [String: AnyObject] {

   }
}, withCancelBlock: nil)

This is what I have done, and I don't think I am getting the data right

func fetchUsers() {
        
        Database.database().reference().child("users").observe(.childAdded) { (snapshot) in

            if let dictionary  = snapshot.value as? [String: AnyObject] {
                let user = User()
                user.setValuesForKeys(dictionary) // this is where my error is

            }
        }
    }

Error

Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<FBCHSRM.User 0x600002701050> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key email.'

Data in the dictionary looks like this

enter image description here

Upvotes: 0

Views: 921

Answers (1)

Adem &#214;zsayın
Adem &#214;zsayın

Reputation: 247

you are setting values wrongly you should change something. first add your user struct

init(email: String, username: String) {
        self.email= email
        self.name = name

    }

then make an array of users to store data as:

var users:[User] = []

in fetchUser func 

 if let dictionary  = snapshot.value as? [String: AnyObject] {
        for dic in dictionary{
            let emailFromFB = dic["email"] as? String ?? "" 
            let username = dic["username"] as? String ?? "" /
            var u: User(email: email, name:name)
            users.append(u)

        }
    }

    print(users)

Upvotes: 1

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