swift - 如何允许用户只获取他们自己的数据？迅速

问题描述

我已经在我的应用中实现了 Firebase。我可以按下一个按钮并将所需的数据发送到 Firebase。我还设置了一个表格视图，以便将所需的数据添加到表格视图中。但是，当任何用户按下按钮发送数据和更新表时，所有数据都会被拉出，甚至来自其他用户。似乎正在提取整个数据库，而不是特定于用户的数据库。我希望用户能够根据他们的 uid 而不是其他用户的 uid 获得他们输入/保存的干手选项。我认为这与这部分代码有关： let handDryLocations = ["id":key

我对这一切都很陌生，所以非常感谢任何帮助。这是代码：

import UIKit
import Firebase
import FirebaseDatabase

class HandDrySaveViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {

    var refHandrylocations: DatabaseReference!
    
    @IBOutlet weak var BestOption: UILabel!
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        NotificationCenter.default.addObserver(self, selector: #selector(didGetNotification4(_:)), name: Notification.Name("text4"), object: nil)

        NotificationCenter.default.addObserver(self, selector: #selector(didGetNotification5(_:)), name: Notification.Name("text5"), object: nil)
        
        if FirebaseApp.app() == nil {
            FirebaseApp.configure()
        }
        
        refHandrylocations = Database.database().reference().child("users");
        
        refHandrylocations.observe(DataEventType.value, with:{(snapshot) in
            if snapshot.childrenCount>0{
                self.handDryList.removeAll()
                
                for handDryOptions in snapshot.children.allObjects as![DataSnapshot]{
                    let handDryObject = handDryOptions.value as? [String: AnyObject]
                    let handDryLocation = handDryObject?["handrylocation"]
                    let handDryBest = handDryObject?["handdrybest"]
                    let handDryString = handDryObject?["handdryoption"]
                    let handDryId = handDryObject?["id"]
                    
                    let handDry = HandDryModel(id: handDryId as! String?, location: handDryLocation as! String?, best: handDryBest as! String?, options: handDryString as! String?)
                    
                    self.handDryList.append(handDry)
                }
                
                self.handDryTable.reloadData()
            }
        })
        // Do any additional setup after loading the view.
    }
    
    @IBAction func BacktoHDCalcButton(_ sender: UIButton) {
        
        let storyboard = UIStoryboard(name: "Main", bundle: nil)
        let vc = storyboard.instantiateViewController(identifier: "TowelVDryer")
        vc.modalPresentationStyle = .overFullScreen
        present(vc, animated: true)
    }
    
    func addHandDryLocation(){
        let key = refHandrylocations.childByAutoId().key
        
        let handDryLocations = ["id":key,
                                "handrylocation": HandDryLocation.text! as String,
                                "handdrybest" : BestOption.text! as String,
                                "handdryoption" : HandDryOptionsString.text! as String
                                    ]
        refHandrylocations.child(key!).setValue(handDryLocations)
        
        OptionSavedMessage.text = "Location Saved"        
    }    
    
    @IBOutlet weak var HandDryOptionsString: UILabel!
    @IBOutlet weak var HandDryLocation: UITextField!
    
    @IBOutlet weak var OptionSavedMessage: UILabel!
    @IBAction func BackButton(_ sender: UIButton) {
    }
    
    
    @objc func didGetNotification4(_ notification: Notification){
        let text = notification.object as! String?
        HandDryOptionsString.text = text
    }
    
    @objc func didGetNotification5(_ notification: Notification){
        let text = notification.object as! String?
        BestOption.text = text
    }
    
    @IBAction func SaveHandDryButton(_ sender: UIButton) {
        addHandDryLocation()
    }
    
    @IBOutlet weak var handDryTable: UITableView!
    
    var handDryList = [HandDryModel]()
    
    public func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return handDryList.count
    }
    
    public func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath) as! HandDrySavedTableViewCell
        
        let handDry: HandDryModel
        
        handDry = handDryList[indexPath.row]
        
        cell.locationOfOption.text = handDry.location
        cell.bestOption.text = handDry.best
        cell.optionString.text = handDry.options
        
        return cell
    }
}

标签： swiftfirebase-realtime-database

swift - 如何允许用户只获取他们自己的数据？迅速

问题描述

解决方案

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