[Solved] iOS Error: Cannot convert value of type ‘UserModel’ to expected argument type ‘[String : Any]’

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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)
}

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solved iOS Error: Cannot convert value of type ‘UserModel’ to expected argument type ‘[String : Any]’