我怎样才能从 child 获取数组并在 swift 中从 firebase 保存到结构中

Question

我有一个快速问题，我在这里找不到。

我有一个结构可以保存我的 firebase 用户的所有数据。问题是我的用户有一个动态列表，总是可以是 0，或者有 3 行或更多行类型 [String:Int]，在简历中我认为 a_trips 是 [[String:Int]]

我的实际结构：

struct User {

let fullname: String
let location: String
let uid: String

let a_trips: ? 

    
init(uid: String, dictionary: [String: Any]) {
    
    self.uid = uid
    self.fullname = dictionary["fullname"] as? String ?? ""
    self.location = dictionary["location"] as? String ?? ""
    
    // i dont know to get array of array of a_trips here
    

    
}

}

firebase 中的用户示例：

id:{

   uid:{
      
      fullname: "name",
      uid: "121948349238",
      location: "example location",
      a_trips: {
         "trip1": {
            id: 1432542543 (int)
         },
         "trip2": {
            id: 1523524654 (int)
         }
         ...
      }

   }

}

或者...有时可以是：

id:{

   uid:{
      
      fullname: "name",
      uid: "121948349238",
      location: "example location",
      a_trips: {
        // nil
      }

   }

}

Answer 1

已解决！非常感谢大家。我能找到解决方案

struct User {

 let fullname: String
 let location: String
 let uid: String

 
 // i finally create a simple array
 var tripList: [Int]

    
 init(uid: String, dictionary: [String: Any]) {
    
    self.uid = uid
    self.fullname = dictionary["fullname"] as? String ?? ""
    self.location = dictionary["location"] as? String ?? ""
    
    var arrayTripsAux = [Int]()
    if let a_trips = dictionary["a_trips"] as? [String: [String:Int]]{
        
        for t in a_trips.values{
            arrayTripsAux.append(t["id"] ?? 0)
        }
        
    } else {
        arrayTripsAux.append(0)
    }
    
    // return childs in array
    self.tripList = arrayTripsAux
    

    
 }

我怎样才能从 child 获取数组并在 swift 中从 firebase 保存到结构中

how can i get array from child and save in struct from firebase in swift

ios

firebase

swift

firebase-realtime-database