使用iOS将特定于用户的数据添加到Firebase实时数据库

Question

我正在创建一个应用程序，首先要对用户进行身份验证，然后他们才能添加捕获的鱼的记录。

用户创建帐户时，会将它们添加到Firebase的“身份验证”部分，还将它们添加到实时数据库中的“用户”节点。这是auth写的样子：

func createUser(withEmail email: String, andPassword password: String, userCreationComplete: @escaping (_ status: Bool, _ error: Error?) -> ()) {
        Auth.auth().createUser(withEmail: email, password: password) { (authDataResult, error) in
            guard let authDataResult = authDataResult else {
                userCreationComplete(false, error)
                return
            }

            let userData = ["provider": authDataResult.user.providerID, "email": authDataResult.user.email]
            DataService.instance.createDbUser(uid: authDataResult.user.uid, userData: userData)
            userCreationComplete(true, nil)
        }
    }

private var _REF_BASE = DB_BASE
    private var _REF_USERS = DB_BASE.child("users")
    private var _REF_CATCHES = DB_BASE.child("catches")

func createDbUser(uid: String, userData: Dictionary<String, Any>) {
        REF_USERS.child(uid).updateChildValues(userData)
    }

我不知道是如何添加一条鱼记录的，该记录仅与添加该记录的用户绑定（每个用户只能查看自己的鱼获）。

我有一个鱼模型：

class Fish {
    private var _fishSpecies: String
    private var _fishWeight: String
    private var _key: String

    var fishSpecies: String {
        return _fishSpecies
    }
    var fishWeight: String {
        return _fishWeight
    }
    var key: String {
        return _key
    }

    init(species: String, weight: String, key: String) {
        self._fishSpecies = species
        self._fishWeight = weight
        self._key = key
    }
}

这是我的“添加”按钮，它将需要获取用户添加的鱼类信息，并将其添加到特定用户下的实时数据库中：

@IBAction func addBtnPressed(_ sender: Any) {
    guard let species = speciesTxtField.text
    guard let weight = weightTxtField.text 
    guard let uid = Auth.auth().currentUser?.uid

    //nest fish model in the realtime db under the specific user        
}

要做我的应用程序应该做的事情，我还需要更新数据库规则吗？他们目前允许从任何经过身份验证的人进行读写。是否应该将它们更改为仅在uid匹配时才允许读取？

{
  "rules": {
    "$uid": {
      ".write": "auth.uid != null",
      ".read": "auth.uid != null"
   }
 }
}

编辑：

这是我的数据服务类中创建一条鱼记录并获取所有鱼记录的方法吗？看起来正确吗？我将如何在“添加”按钮操作中利用它？

func createFish(withSpecies species: String, andWeight weight: String, handler: @escaping (_ fishCreated: Bool) -> ()) {
        REF_CATCHES.childByAutoId().updateChildValues(["species": species, "weight": weight])
        handler(true)
    }

func getAllFish(handler: @escaping (_ catchArray: [Fish]) -> ()) {
        var fishArray = [Fish]()
        REF_CATCHES.observeSingleEvent(of: .value) { (fishSnapshot) in
            guard let fishSnapshot = fishSnapshot.children.allObjects as? [DataSnapshot] else { return }
            for fish in fishSnapshot {
                    let species = fish.childSnapshot(forPath: "species").value as! String
                    let weight = fish.childSnapshot(forPath: "weight").value as! String
                    let cAtch = Fish(species: species, weight: weight, key: fish.key)
                    fishArray.append(cAtch)
            }
            handler(fishArray)
        }
    }