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我正面臨Parse問題。如何在Swift中解析嵌套查詢
我有三類:用戶,帖子,喜歡
我使用指針爲喜歡類用戶指向用戶類和後指點到的帖子 class。
我檢索所有的帖子,然後我想看看如果當前用戶喜歡的文章或沒有,對於我嵌套查詢。我遇到的問題是帖子沒有用像布爾值更新。我使用的代碼:
func loaddata(limit:Int, skip:Int) {
MainFunctions.getphones{(phones) -> Void in
var indxesPath:[NSIndexPath] = [NSIndexPath]()
let query = PFQuery(className: "Feed")
query.whereKey("username", containedIn: phones)
query.limit = limit
query.skip = skip
query.includeKey("from")
query.addDescendingOrder("createdAt")
query.findObjectsInBackgroundWithBlock {
(objects: [PFObject]?, error: NSError?) -> Void in
if error == nil {
if let objects = objects {
if objects.isEmpty {
}
else {
for object in objects {
let Date = object.createdAt
let post = Post(time: Date!)
let Type = object.objectForKey("type") as? String
post.Post = object
post.Post_message = object.objectForKey("Text") as? String
post.comments = object.objectForKey("commentaires") as? Int
post.likes = object.objectForKey("likes") as? Int
// See if the current user likes a post
let query_like = PFQuery(className:"Likes")
query_like.whereKey("Post", equalTo: object)
query_like.whereKey("User", equalTo: PFUser.currentUser()!)
query_like.getFirstObjectInBackgroundWithBlock{
(like: PFObject?, error: NSError?) -> Void in
if error == nil && like != nil {
post.DoILike = true
} else {
post.DoILike = false
}
}
self.posts.append(post)
indxesPath.append(NSIndexPath(forRow: self.posts.count - 1, inSection: 0))
}
self.tableView.beginUpdates()
self.tableView.insertRowsAtIndexPaths(indxesPath, withRowAnimation: UITableViewRowAnimation.Bottom)
self.tableView.endUpdates()
self.tableView.finishInfiniteScroll()
self.refreshControl.endRefreshing()
}
}
} else {
self.tableView.finishInfiniteScroll()
self.refreshControl.endRefreshing()
}
}
}
}
是的,我知道,但我怎麼能做到這一點? –
將所有代碼(在tableview等中插入行)放在回調塊內 – Coyote