我一直在尝试在我的应用程序上实现"follow"功能 . 基本上当用户点击"follow"按钮时,我们运行 runTransactionBlock
来更新我们存储在Firebase数据库中的用户及其所关注帐户的整数值 . The issue is that I am able to update the counter for the user (say John in example below) , but I am not able to update the counter for the user I am following (say olivia in example below).
目前,Firebase节点看起来如下:
user_profiles{
UID1:{
name: john
following: 1 //code will update for my account
followers: 0
},
UID2:{
name: olivia
following: 0
followers: 0 //code will not update count for person i am trying to follow
我引用了以下内容,但是我仍然面临着让它工作的问题 . 如果有人可以请一瞥并指出我正确的方向,我将不胜感激 .
https://www.firebase.com/docs/ios/guide/saving-data.html
Firebase database help - Swift
Upvote/Downvote system within Swift via Firebase
var guestUIDToPass = String()
var loggedInUser = AnyObject()
@IBAction func didTapFollow(sender: AnyObject) {
following()
}
func following() {
self.loggedInUser = FIRAuth.auth()?.currentUser
//updating count for user, works perfectly
self.databaseRef.child("user_profiles").child(self.loggedInUser.uid).child("following").runTransactionBlock({
(currentData:FIRMutableData!) in
var value = currentData.value as? Int
if (value == nil) {
value = 0
}
currentData.value = value! + 1
return FIRTransactionResult.successWithValue(currentData)
})
//updating count for person user is following, doesn't update firebase
self.databaseRef.child("user_profiles").child("\(self.guestUIDToPass)").child("followers").runTransactionBlock({
(currentData:FIRMutableData!) in
var value = currentData.value as? Int
if (value == nil) {
value = 0
}
currentData.value = value! + 1
return FIRTransactionResult.successWithValue(currentData)
})
}
1 回答
尝试:-