class RoomFeed: UIViewController, UITableViewDelegate, UITableViewDataSource{
let posts = Post(id: self.documentId , author: owner!, text: text!, amount: self.amount)
//This is called in the view controller which is "host of table View"
//Document Id at this point is not nill confirmed.
}
class PostTableVIewCell: UITableViewCell {
//This is table view cell
var king: String!
var postID: String!
override func awakeFromNib() {
super.awakeFromNib()
Firestore.firestore().collection("GeneralData").document("\(self.postID)").getDocument { document, err in
if let document = document, document.exists {
let data = document.data()
self.king = data!["1"] as? String
let placeamount = data!["amount"] as? String
self.amountLabel.text = placeamount
}
print("KING: \(self.king!)")
self.kingLabel.text = self.king
}}
func set(post:Post) {
usernameLabel.text = post.author
PostTextLabel.text = post.text
self.amount = post.amount
postID = post.id
}
}
这是我的代码,但出现错误,提示“''FIRESTORE内部断言失败:无效的文档引用。文档引用必须具有偶数个段”我在做什么错?最佳答案
您可能是错误的方法。我为您编写了示例代码,可能会对您有所帮助。如果您需要更多帮助,请给我写评论。
ViewController.swift
import UIKit
import Firebase
class ViewController: UIViewController {
@IBOutlet weak var tableView: UITableView!
var postDataList = [Post]()
override func viewDidLoad() {
super.viewDidLoad()
self.tableView.delegate = self
self.tableView.dataSource = self
Firestore.firestore().collection("GeneralData").getDocuments { document, err in
if let document = document {
let dataDescription = document.documents
for i in dataDescription {
let post = Post.init(data: i.data())
self.postDataList.append(post)
}
self.tableView.reloadData()
}
else {
print("Document does not exist")
}
}
}
}
extension ViewController: UITableViewDelegate, UITableViewDataSource {
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return self.postDataList.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath) as! CustomTableViewCell
let post = self.postDataList[indexPath.row]
cell.setPost(post: post)
return cell
}
}
CustomTableViewCell.swift import UIKit
class CustomTableViewCell: UITableViewCell {
@IBOutlet weak var usernameLabel: UILabel!
@IBOutlet weak var postTextLabel: UILabel!
@IBOutlet weak var amountLabel: UILabel!
override func awakeFromNib() {
super.awakeFromNib()
// Initialization code
}
func setPost(post: Post) {
self.usernameLabel.text = post.name
self.postTextLabel.text = post.text
self.amountLabel.text = String(post.amount)
}
}
Post.swift struct Post {
let name: String
let surname: String
let owner: String
let amount: Int
let text: String
let uid: String
init(data: [String: Any]) {
self.name = data["name"] as! String
self.surname = data["surname"] as! String
self.owner = data["owner"] as! String
self.amount = data["amount"] as! Int
self.text = data["text"] as! String
self.uid = data["uid"] as! String
}
}
这是数据库应具有的结构:关于swift - 我正在获取无效的文档引用。文档引用在xcode中必须具有偶数个段错误,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/62884146/