在Firebase中删除字典元素 [英] Removing a dictionary element in Firebase

问题描述

我正在尝试删除Firebase中的字典元素

I am trying to remove a dictionary element in firebase

我要删除对象:-

D8QmnOSH6vRYiMujKNXngzhdn992:真" 在 PendingFriendRequests/RhiZYyMF7STn1vyA27HjnJRsLYb2 到目前为止，我已经提出了:-

D8QmnOSH6vRYiMujKNXngzhdn992: "True" at PendingFriendRequests/RhiZYyMF7STn1vyA27HjnJRsLYb2 so far i have come up with this :-

FIRControllerClass.ref.child("PendingFriendRequests").child(FIRAuth.auth()!.currentUser!.uid).observeSingleEventOfType(.Value, withBlock: {(Snapshot) in

                        let dict = Snapshot.value! as! NSMutableDictionary

                        for each in dict {
                        print(each)

                            print(acceptedFriend)

                            if each.key as! String == acceptedFriend{
                                print(each.key)
                                dict.removeObjectForKey(each.key)
                                print(dict)
                                }
                            FIRControllerClass.ref.child("PendingFriendRequests").child(acceptedFriend).setValue(dict)
                            }
                        })

推荐答案

var ref:DatabaseReference！

var ref: DatabaseReference!

ref = Database.database().reference()

ref = Database.database().reference()

FIRControllerClass.ref.child("parentKey").child("childKey").setValue(nil)

FIRControllerClass.ref.child("parentKey").child("childKey").setValue(nil)

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