Question

我想知道是否有人对如何在'Firebase'中一次查询数组中的多个字符串有任何想法。基本上查询就像使用 AND 条件一样。我已经研究过以一百种不同的方式重构我的数据，但没有任何方法对我有用。另外，我有太多的数据要转储所有数据，然后在执行查询后匹配我的数组。非常感谢任何帮助或建议。

var uniqueStoreId = [“1”, “2”, “3”, “4”, “5”, “6”]
var posts = [Post]()

ref.queryOrderedByChild("storeId").queryEqualToValue("\(uniqueStoreId)").observeEventType(.Value, withBlock: {snapshot in
                    if let snapshot = snapshot.children.allObjects as? [FIRDataSnapshot] {
                        for snap in snapshot{
                            if let postDict = snap.value as? Dictionary<String, AnyObject> {
                                let key = snap.key
                                let post = Post(postKey: key, postData: postDict)
                                self.posts.insert(post, atIndex: 0)
                            }
                        }
                    }

        })

Answer 1

//做这样的事情，检查它的数组或词典，然后加入一个数组然后根据要求使用..享受

                    var arrMessage = [MessageFirebase]()

                    if let snapshots = snapshot.children.allObjects as? [FIRDataSnapshot] {

                        //If its a Array then use below method
                        for snap in snapshots {
                            if let postDictionary = snap.value as? Dictionary<String, AnyObject> {
                                let key = snap.key
                                let message = MessageFirebase(key: key, dictionary: postDictionary)
                                // Items are returned chronologically, but it's more fun with the newest jokes first.

                                //if needed
                                arrMessage.insert(message, atIndex: 0)
                            }
                        }

                        //If its a dictionary then use below method
                        if !(arrMessage.count > 0) {
                            let key = snapshot.key
                            let message = MessageFirebase(key: key, dictionary: snapshot.value!)
                            // Items are returned chronologically, but it's more fun with the newest jokes first.

                            //if needed
                            arrMessage.insert(message, atIndex: 0)
                        }
                    }

Firebase查询字符串数组

1 个答案: