子供のフォルダデータを取得するFirebase Swift

Question

私は現在、様々なレストランをリストしたプロジェクトをビルドしています。私のプロジェクトではメインテーブルビューを使用してレストランのリストを表示し、セルをクリックすると、レストランに関する基本情報を表示するView Controllerにセグーで転送します。詳細View Controllerには、 "Offers"というボタンがあります。クリックすると、そのレストランのオファーの配列を示す別のテーブルビューが開きます。

これまでのところ、View Controllerの詳細が表示されているレストランのリストを取得することはできますが、各レストランのオファーのリストを表示する方法はわかりません。 私を助けて、事前に感謝してください。

コード： レストラン/バーモデル：

import Foundation 
import Firebase 
import FirebaseDatabase 

struct Bar{ 
    let id: String 
    let barName: String 
    let barAddress: String 
    let barMainImage: String 
    let barInfo: String 
    let barFullAddress: String 
    let averagePrice: String 

    let disabledIcon: String 
    let parkingIcon: String 
    let wifiIcon: String 
    let offerImage: String 

    static func bar(from snapshot: DataSnapshot) -> Bar?{ 
     let barDict = snapshot.value as? [String : AnyObject] ?? [:] 
     guard let barName = barDict["bar_name"] as? String, 
     let barAddress = barDict["bar_short_address"] as? String, 
     let barMainImage = barDict["bar_main_image"] as? String, 
     let barInfo = barDict["bar_info"] as? String, 
     let barFullAddress = barDict["bar_full_address"] as? String, 
     let averagePrice = barDict["average_price"] as? String, 

     let disabledIcon = barDict["disabled_icon"] as? String, 
     let parkingIcon = barDict["parking_icon"] as? String, 
     let wifiIcon = barDict["wifi_icon"] as? String, 
let offers = barDict["offers"] as? [String:Any], 
    let offerImage = offers["offer_image"] as? String, 
     let id = String(snapshot.key) 
     else {return nil} 
    let bar = Bar (id: id, barName: barName, barAddress: barAddress, barMainImage: barMainImage, barInfo: barInfo, barFullAddress: barFullAddress, averagePrice: averagePrice, disabledIcon: disabledIcon, parkingIcon: parkingIcon, wifiIcon : wifiIcon, offerImage: offerImage) 

    return bar 
} 

}

最初のテーブルビューコントローラ - すべてのレストランを示しています。

import UIKit 
import Firebase 
import FirebaseAuth 
import FirebaseDatabase 
import FirebaseStorage 
import SDWebImage 

class MainTableVC: UITableViewController { 


@IBOutlet weak var MenuBar: UIBarButtonItem! 

@IBOutlet weak var cityButton: UIButton! 

var ref: DatabaseReference! 
var bars = [Bar]() 
var selectedBar: Bar? 
var refreshTableView = UIRefreshControl() 
var selectedCity:String! 


override func viewDidLoad() { 
    super.viewDidLoad() 

    // Uncomment the following line to preserve selection between presentations 
    // self.clearsSelectionOnViewWillAppear = false 

    // Uncomment the following line to display an Edit button in the navigation bar for this view controller. 
    // self.navigationItem.rightBarButtonItem = self.editButtonItem() 

    //back button title removal 
    self.navigationItem.backBarButtonItem = UIBarButtonItem(title: "", style: UIBarButtonItemStyle.plain, target: nil, action: nil) 


    // SlideOutMenu 
    MenuBar.target = self.revealViewController() 
    MenuBar.action = #selector(SWRevealViewController.revealToggle(_:)) 
    self.view.addGestureRecognizer(self.revealViewController().panGestureRecognizer()) 

    ref = Database.database().reference() 

    fetchBars() 
    // for pull to refresh 
    refreshTableView.tintColor = UIColor.white 
    self.tableView.addSubview(refreshTableView) 
    refreshTableView.addTarget(self, action: #selector(MainTableVC.refreshData), for: UIControlEvents.valueChanged) 


} 


// for pull to refress 
func refreshData() { 
    //removes data before updating and entering new one 
    self.bars.removeAll() 
    ref.child("Paris").observe(.childAdded, with: { (snapshot) in 
     guard let bar = Bar.bar(from: snapshot) else {return} 
     self.bars.append(bar) 
     self.refreshTableView.endRefreshing() 
     self.tableView.reloadData() 
    }) 
} 

func fetchBars(){ 

    ref.child("Paris").observe(.childAdded, with: { (snapshot) in 
     guard let bar = Bar.bar(from: snapshot) else {return} 
     self.bars.append(bar) 
     self.tableView.reloadData() 
    }) 
    self.refreshTableView.endRefreshing() 
} 

override func didReceiveMemoryWarning() { 
    super.didReceiveMemoryWarning() 
    // Dispose of any resources that can be recreated. 
} 

// MARK: - Table view data source 

override func numberOfSections(in tableView: UITableView) -> Int { 
    // #warning Incomplete implementation, return the number of sections 
    return 1 
} 

override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int { 
    // #warning Incomplete implementation, return the number of rows 
    return bars.count 
} 


override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell { 
    let cell = tableView.dequeueReusableCell(withIdentifier: "RestoCell", for: indexPath) as! ViewControllerCell 

    let bar = bars[indexPath.row] 
    cell.RestName.text = bar.barName 
    cell.RestAddress.text = bar.barAddress 
    cell.RestImage.sd_setImage(with: URL(string: bar.barMainImage)) 


    return cell 
} 

override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) { 
    selectedBar = bars[indexPath.row] 
    performSegue(withIdentifier: "DetailView", sender: self) 
} 


override func prepare(for segue: UIStoryboardSegue, sender: Any?) { 
    if segue.identifier == "DetailView", let bar = selectedBar{ 
     let detailVC = segue.destination as! DetailViewController 
     detailVC.selectedBar = bar 
    } 
} 

詳細ビューコントローラ - すべての詳細情報を一覧表示する各レストランの指定：

import UIKit 
import Firebase 
import FirebaseAuth 
import FirebaseDatabase 
import FirebaseStorage 
import SDWebImage 

class DetailViewController: UIViewController { 

@IBOutlet weak var MyScroll: UIScrollView! 




@IBOutlet weak var RestDetailView: UIView! 
@IBOutlet weak var restName: UILabel! 

@IBOutlet weak var restTypeOfFood: UILabel! 

@IBOutlet weak var restClockImage: UIImageView! 

@IBOutlet weak var restOpenHours: UILabel! 

@IBOutlet weak var restInfoView: UIView! 

@IBOutlet weak var averagePrice: UILabel! 

@IBOutlet weak var InfoAboutRest: UILabel! 

@IBOutlet weak var FullAddressLabel: UILabel! 

@IBOutlet weak var disabledIcon: UIImageView! 

@IBOutlet weak var parkingIcon: UIImageView! 

@IBOutlet weak var wifiIcon: UIImageView! 

@IBOutlet weak var OpeningHoursLabel: UILabel! 





@IBOutlet weak var ImageViewD: UIImageView! 

var selectedBar：Bar？

override func viewDidLoad() { 
    super.viewDidLoad() 


    self.RestDetailView.layer.borderColor = UIColor.white.cgColor 
    self.RestDetailView.layer.borderWidth = 1 
    self.restInfoView.layer.borderColor = UIColor.white.cgColor 
    self.restInfoView.layer.borderWidth = 1 

    if let bar = selectedBar{ 
     restName.text = bar.barName 
     ImageViewD.sd_setImage(with: URL(string: bar.barMainImage)) 
     InfoAboutRest.text = bar.barInfo 
     averagePrice.text = bar.averagePrice 
     FullAddressLabel.text = bar.barFullAddress 
     disabledIcon.sd_setImage(with: URL(string: bar.disabledIcon)) 
     parkingIcon.sd_setImage(with: URL(string: bar.parkingIcon)) 
     wifiIcon.sd_setImage(with: URL(string: bar.wifiIcon)) 

    } 

} 






/* 
// MARK: - Navigation 

// In a storyboard-based application, you will often want to do a little preparation before navigation 
override func prepare(for segue: UIStoryboardSegue, sender: Any?) { 
    // Get the new view controller using segue.destinationViewController. 
    // Pass the selected object to the new view controller. 
} 
*/ 

}

IMAGES

[Firebaseツリー] [1] [MainStoryBoard] [2]私のモデルで

OffersTableView: 


import UIKit 
import Firebase 
import FirebaseAuth 
import FirebaseDatabase 
import FirebaseStorage 
import SDWebImage 


class OffersTableVC: UITableViewController { 
var ref: DatabaseReference! 
var bars = [Bar]() 
var selectedBar: Bar? 

override func viewDidLoad() { 
    super.viewDidLoad() 

    // Uncomment the following line to preserve selection between presentations 
    // self.clearsSelectionOnViewWillAppear = false 

    // Uncomment the following line to display an Edit button in the navigation bar for this view controller. 
    // self.navigationItem.rightBarButtonItem = self.editButtonItem() 
    fetchBars() 
} 
func fetchBars(){ 

    ref.child("aktau").observe(.childAdded, with: { (snapshot) in 
     guard let bar = Bar.bar(from: snapshot) else {return} 
     self.bars.append(bar) 
     self.tableView.reloadData() 
    }) 

} 


override func didReceiveMemoryWarning() { 
    super.didReceiveMemoryWarning() 
    // Dispose of any resources that can be recreated. 
} 

// MARK: - Table view data source 

override func numberOfSections(in tableView: UITableView) -> Int { 
    // #warning Incomplete implementation, return the number of sections 
    return 1 
} 

override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int { 
    // #warning Incomplete implementation, return the number of rows 
    return 1 
} 


override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell { 
    let cell = tableView.dequeueReusableCell(withIdentifier: "OfferCell", for: indexPath) as! OffersTableViewCell 

    let bar = bars[indexPath.row] 
    cell.offerImageView.sd_setImage(with: URL(string: bar.offerImage)) 
    return cell 
} 

エラー：

ModelError

Answer 1

あなたは

let offers = barDict["offers"] as? [String:Any] 

のような "申し出" を解析する必要があります。そして、あなたは私はあなたが私のアイデアを得る願ってい

var offersArray = [Offer]() 

    for item in offers { 

    guard let offerimage = item["offerImage"] as? String, ... { 
     var offer = Offer(offerimage) 
     offersArray.append(offer) 
    } 
} 


class Offer { 

let offerImageUrl:String 
// Other Properties 

    init(string: offerImageUrl){ 
    self.offerImageUrl = offerImageurl 
    //Other Properties 
    } 
} 

のように、この辞書を解析する必要があります。今すぐあなたの提供で配列があります:)