如何將上傳的影像分配給特定的DocumentID？

我有一個帶有文本欄位和影像選擇器的簡單表單，用戶可以將其上傳到 Firebase。

如何let @DocumentID = ...在存盤部分？ 目的：我需要將影像保存為一個檔案中的鏈接。目前影像僅保存在Storage中。如何正確執行？

所有的嘗試都讓我發現它pic是在資料庫中創建為單獨的檔案，而不是在同一個檔案中。

按鈕：完成-[AddItemView]

@ObservedObject var viewModel = NewItemView()

func handleDoneTapped() {
    self.viewModel.handleDoneTapped()
    self.uploadImage()
    self.dismiss()
}

存盤部分-[AddItemView]

@ObservedObject var viewModel = NewItemView()

func uploadImage() {
    let storage = Storage.storage().reference()
    let picData: Data  = pickedImages[0].jpegData(compressionQuality: 0.5)!
//        let userId = Auth.auth().currentUser?.uid
    let path = "itemImages/\(UUID().uuidString).jpg"
    let ref = storage.child(path)
    let metadata = StorageMetadata()
    metadata.contentType = "image/jpg"
    let uploadTask = ref.putData(picData, metadata: metadata, completion: { (storageMetaData, error) in
            
        if error != nil {
                
            print(error?.localizedDescription as Any)
            return

        }
    })        
}

所有vars -[SingleItem]

struct SingleItem: Identifiable, Codable {
    @DocumentID var id: String?   // How I can use it in Storage section?
    var title : String
    var author : String
    var description : String
    @ServerTimestamp var createdTime: Timestamp?
    var userId : String?
    var pic : String
}
  
enum CodingKeys: String, CodingKey {
    case id
    case title
    case author
    case description = ""
    case pic
}

Firestore -[NewItemView]

class NewItemView: ObservableObject {
    // MARK: - Public properties
  
    @Published var singleitem: SingleItem
    @Published var modified = false
  
    // MARK: - Internal properties
  
    private var cancellables = Set<AnyCancellable>()
  
    // MARK: - Constructors
  
    init(singleitem: SingleItem = SingleItem(title: "", author: "", description: "", pic: "")) {
        self.singleitem = singleitem
    
        self.$singleitem
            .dropFirst()
            .sink { [weak self] singleitem in
                self?.modified = true
            }
            .store(in: &self.cancellables)
    }
  
    // MARK: - Firestore
  
    private var db = Firestore.firestore()
  
    private func addItem(_ singleitem: SingleItem) {
        do {
            var addedItem = singleitem
            addedItem.userId = Auth.auth().currentUser?.uid
            _ = try db.collection("items").addDocument(from: addedItem)
        
        }
        catch {
            print(error)
        }      
      
    }

    private func updateItem(_ singleitem: SingleItem) {
        if let documentID = singleitem.id {
            do {
                try db.collection("items").document(documentID).setData(from: singleitem)
            }
            catch {
                print(error)
            }
        }
    }

    private func updateOrAddItem() {
        if singleitem.id != nil {
            self.updateItem(self.singleitem)
        }
        else {
            addItem(singleitem)
        }
    }

    func handleDoneTapped() {     // And this func I call in Done button
        self.updateOrAddItem()
    }
}

uj5u.com熱心網友回復：

你創建了你的pathin uploadImage。您只需要使用您靜態創建的路徑更新您的物件。

// You make the path to the image here
let path = "itemImages/\(UUID().uuidString).jpg"

您可以通過多種方式執行此操作，但您需要類似

func uploadImage() {
    let storage = Storage.storage().reference()
    let picData: Data  = pickedImages[0].jpegData(compressionQuality: 0.5)!
    let path = "itemImages/\(UUID().uuidString).jpg"
    let ref = storage.child(path)
    let metadata = StorageMetadata()
    metadata.contentType = "image/jpg"
    let uploadTask = ref.putData(picData, metadata: metadata, completion: { (storageMetaData, error) in
        if error != nil {
            print(error?.localizedDescription as Any)
            return
        } else {
            // Upload succeeded with the path you added
            // So set the pic variable to the path
            self.viewModel.singleItem.pic = path
            // Then update the item
            self.viewModel.updateOrAddItem()
        }
    })        
}

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