I am trying to save user information in FireBaseFirestore, the function I am using is from the Firestore documentation. I Am getting that error but the app is running fine and the data is saved correctly.

CodePudding user response：

You have to convert your UserModel to [String : Any] type in order to save it on firebase. Try this:

func convertUserModelToDictionary(user: UserModel) -> [String : Any] {

    let userData = [
        "name" : user.name,      // change these according to you model
        "email": user.email,
        "user_id": user.userId
    ]
    
    return userData
}

You can use this function as:

do {
    let userData = convertUserModelToDictionary(user: userInfo)
    try db.collection("usersInformations").document(userInfo.id).setData(from: userData)
} catch let error {
    print(error.localizedDescription)
}