尝试将图像添加到 Firebase 存储，然后将图像位置添加到 Firestore 文档

Question

我正在尝试将图像添加到 Firebase 存储，然后获取该图像的位置并将其与其他用户配置文件数据一起存储在 Firestore 文档中。 当用户首次创建帐户时，我正在尝试执行所有这些操作。 我试图使用图像 URL 来执行此操作，但这似乎不起作用。 当我运行下面的代码时，它将注册一个新用户并将照片添加到 Firebase 存储，但在 Firestore 数据库中没有创建任何文档。 我究竟做错了什么？

@objc func handleSignUp() {

    //Signup properties
    guard let email = emailTextField.text else { return }
    guard let password = passwordTextField.text else { return }
    guard let fullName = fullNameTextField.text else { return }
    guard let username = usernameTextField.text?.lowercased() else { return }

    createUser(email: email,
               password: password,
               fullName: fullName,
               userName: username)
}

func createUser(email: String, password: String, fullName: String, userName: String) {
    Auth.auth().createUser(withEmail: email, password: password) { (authResult, error) in

        //Handle error
        if let error = error {
            print("DEBUG: Failed to create user with error: ", error.localizedDescription)
            return
        }

        guard let profileImg = self.plusPhotoBtn.imageView?.image else { return }
        guard let uploadData = profileImg.jpegData(compressionQuality: 0.3) else { return }

        let userID = Auth.auth().currentUser!.uid
        let filename = NSUUID().uuidString

        //Storage location for photo in Firebase
        let storageRef = Storage.storage().reference().child("profile_images").child(userID).child(filename)

        storageRef.putData(uploadData, metadata: nil, completion: { (metadata, error) in

            //Handle error
            if let error = error {
                print("Failed to upload image to Firebase Storage with error", error.localizedDescription)
                return
            }

            guard metadata != nil else { return }

            let path = storageRef.fullPath;

            guard let username = self.usernameTextField.text?.lowercased() else { return }

            storageRef.downloadURL { (url, _) in

                let data = ["name": fullName,
                            "username": username,
                            "profileImagePath": path,
                            "email" : email] as [String : Any]

                self.addDocument(userData: data)
            }
        })
    }
}

Answer 1

我认为您应该在“putData”中添加“downloadURL”部分。

完成放置数据过程后，您应该尝试获取 URL 否则它将失败。

试试这个，看看它是否有效：

@objc func handleSignUp() {

    //Signup properties
    guard let email = email.text else { return }
    guard let password = password.text else { return }
    guard let fullName = name.text else { return }
    guard let username = name.text?.lowercased() else { return }

    createUser(email: email,
               password: password,
               fullName: fullName,
               userName: username)
}

func createUser(email: String, password: String, fullName: String, userName: String) {
    Auth.auth().createUser(withEmail: email, password: password) { (authResult, error) in

        //Handle error
        if let error = error {
            print("DEBUG: Failed to create user with error: ", error.localizedDescription)
            return
        }

        guard let profileImg = self.plusPhotoBtn.imageView?.image else { return }
        guard let uploadData = profileImg.jpegData(compressionQuality: 0.3) else { return }

        let filename = NSUUID().uuidString

        //Storage location for photo in Firebase
        let storageRef = Storage.storage().reference().child("profile_images").child(filename)

        storageRef.putData(uploadData, metadata: nil, completion: { (metadata, error) in

            //Handle error
            if let error = error {
                print("Failed to upload image to Firebase Storage with error", error.localizedDescription)
                return
            }

            guard let metadata = metadata else { return }

            guard let username = self.usernameTextField.text?.lowercased() else { return }
            storageRef.downloadURL { (url, _) in

                guard let downloadURL = url else {
                    print("DEBUG: Profile image url is nil")
                    return
                }

                let data = ["name": fullName,
                            "username": username,
                            "profileImageUrl": downloadURL,
                            "email" : email]

                self.addDocument(userData: data)
            }
        })
    }
}

func addDocument(userData: [String: Any]) {
    Firestore.firestore().collection("profile_data").addDocument(data: userData) { (err) in
            if let err = err {
                debugPrint("Error adding document: \(err)")
            } else {
                self.navigationController?.popViewController(animated: true)
            }
    }
}