我刚刚创建，所以用户可以评论其他用户发布和删除评论，如果他们想删除它们 .
但使用此代码，每个人都可以删除每个人的评论
func getKeysValue() {
// let uid = Auth.auth().currentUser?.uid
Database.database().reference().child("posts").child(postsKey).child("comments").observe( .value) { (snapshot) in
for child in snapshot.children {
let snap = child as! DataSnapshot
let commentKey = snap.key
self.keyArray.insert(commentKey, at: 0)
// print(self.keyArray)
// print("Here is the specific Key\(self.commentKey)")
}
}
}
func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCellEditingStyle, forRowAt indexPath: IndexPath) {
if editingStyle == .delete {
getKeysValue()
let when = DispatchTime.now() + 1
DispatchQueue.main.asyncAfter(deadline: when, execute: {
Database.database().reference().child("posts").child(postsKey).child("comments").child(self.keyArray[indexPath.row]).removeValue()
self.commentsTableView.reloadData()
})
}
}
然后我尝试这个代码只让用户只删除自己的评论：
func getKeysValue() {
// let uid = Auth.auth().currentUser?.uid
Database.database().reference().child("posts").child(postsKey).child("comments").observe( .value) { (snapshot) in
for child in snapshot.children {
let snap = child as! DataSnapshot
let commentKey = snap.key
self.keyArray.insert(commentKey, at: 0)
// print(self.keyArray)
// print("Here is the specific Key\(self.commentKey)")
}
}
}
var uid = Auth.auth().currentUser?.uid
var userID = String()
var idUser = String()
var userUID = String()
func tableView(_ tableView: UITableView, canEditRowAt indexPath: IndexPath) -> Bool {
return true
}
func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCellEditingStyle, forRowAt indexPath: IndexPath) {
if editingStyle == .delete {
getKeysValue()
let when = DispatchTime.now() + 1
DispatchQueue.main.asyncAfter(deadline: when, execute: {
self.userID = self.keyArray[indexPath.row]
self.idUser = self.userID
print(" Here is the indexPath key: \(self.idUser)")
Database.database().reference().child("posts").child(postsKey).child("comments").child(self.idUser).observeSingleEvent(of: .value, with: { (snapshot) in
if let postsDictionary = snapshot.value as? [String: AnyObject] {
self.uidArray.insert(postsDictionary as NSDictionary, at: 0)
let usersArray = self.uidArray[indexPath.row] as! [String: AnyObject]
let usersKey = usersArray["uid"] as? String
self.userUID = usersKey!
print("Here is the Comment:\(self.uidArray)")
print("And here is the UID::: \(self.userUID)")
if self.uid != self.userUID {
let logInAlert = UIAlertController(title: "Failed to delete", message: "You can only delete your own comment(s)", preferredStyle: .actionSheet)
logInAlert.addAction(UIAlertAction(title: "OK", style: .default, handler: nil))
self.present(logInAlert, animated: true, completion: nil)
}else {
let commentSuccess = self.storyboard?.instantiateViewController(withIdentifier: "CommentReloadVC")
self.present(commentSuccess!, animated: false, completion: nil)
Database.database().reference().child("posts").child(postsKey).child("comments").child(self.keyArray[indexPath.row]).removeValue()
self.commentsTableView.reloadData()
}
}
})
})
}
}
soo这个代码有什么问题吗？问题是这个工作完美，但只在tableview的第一行说，这个authorazation代码只适用于帖子的第一个评论，如果你试图删除第一个下面的任何其他评论，那么我得到一个错误索引超出此行的范围
让usersArray = self.uidArray [indexPath.row]为！ [String：AnyObject]
这就是它在数据库中的样子：
这看起来应该可以工作，但它不是它可能真的很容易，但我只是无法弄清楚这样的帮助将非常感谢
谢谢你的时间 . :)