How to setup the postkey for the list of items in the tableview in swift using Firestore database?
I tried lots of stuff since yesterday but avail to no good. I need to use the postkey for posting the comments on the post.
Below the code which is I am following
Post Model Swift File
import Foundation
import Firebase
import FirebaseFirestore
protocol DocumentSerializable {
init?(dictionary:[String:Any])
}
struct Post {
// var name:String
// var content:String
//var timeStamp:Date
var username: String!
var postTitle: String!
// var postKey: String!
var postcategory: String!
var postContent: String!
//private var _postRef: DocumentReference!
var dictionary:[String:Any] {
return [
"username": username,
//"profile_pic":profile_pic,
"postTitle":postTitle,
"postcategory":postcategory,
"postContent":postContent
// "postKey":postKey
]
}
}
extension Post : DocumentSerializable {
init?(dictionary: [String : Any]) {
guard let username = dictionary["username"] as? String,
// let profile_pic = dictionary["profile_pic"] as? String,
let postTitle = dictionary["postTitle"] as? String,
let postcategory = dictionary["postcategory"] as? String,
let postContent = dictionary["postContent"] as? String else { return nil }
// let postKey = dictionary["postKey"] as? String
self.init(username: username, postTitle: postTitle, postcategory: postcategory, postContent: postContent )
}
}
ViewController class used to enlist the posts in tableview
import Foundation
import UIKit
import Firebase
class HomeViewController:UIViewController, UITableViewDelegate, UITableViewDataSource {
var tableView:UITableView!
var posts = [Post]()
var db: Firestore!
private var documents: [DocumentSnapshot] = []
//public var posts: [Post] = []
private var listener : ListenerRegistration!
override func viewDidLoad() {
super.viewDidLoad()
db = Firestore.firestore()
self.navigationController?.navigationBar.isTranslucent = false
tableView = UITableView(frame: view.bounds, style: .plain)
let cellNib = UINib(nibName: "PostTableViewCell", bundle: nil)
tableView.register(cellNib, forCellReuseIdentifier: "postCell")
tableView.backgroundColor = UIColor(white: 0.90,alpha:1.0)
view.addSubview(tableView)
var layoutGuide:UILayoutGuide!
if #available(iOS 11.0, *) {
layoutGuide = view.safeAreaLayoutGuide
} else {
// Fallback on earlier versions
layoutGuide = view.layoutMarginsGuide
}
tableView.leadingAnchor.constraint(equalTo: layoutGuide.leadingAnchor).isActive = true
tableView.topAnchor.constraint(equalTo: layoutGuide.topAnchor).isActive = true
tableView.trailingAnchor.constraint(equalTo: layoutGuide.trailingAnchor).isActive = true
tableView.bottomAnchor.constraint(equalTo: layoutGuide.bottomAnchor).isActive = true
tableView.delegate = self
tableView.dataSource = self
tableView.reloadData()
retrieveAllPosts()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
@IBAction func handleLogout(_ sender:Any) {
try! Auth.auth().signOut()
self.dismiss(animated: false, completion: nil)
}
func retrieveAllPosts(){
let postsRef = Firestore.firestore().collection("posts").limit(to: 50)
postsRef.getDocuments() { (querySnapshot, err) in
if let err = err {
print("Error getting documents: \(err)")
} else {
for document in querySnapshot!.documents {
print("\(document.documentID) => \(document.data())")
self.posts = querySnapshot!.documents.flatMap({Post(dictionary: $0.data())})
DispatchQueue.main.async {
self.tableView.reloadData()
}
}
}
}
}
func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return posts.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "postCell", for: indexPath) as! PostTableViewCell
cell.set(post: posts[indexPath.row])
return cell
}
}
