从firebase模型类中的数据parsing

我有这种forms在firebase的数据，我需要显示设施和相应的预订，所以我怎么可以parsing这个数据在模型class.I是新的parsing。 我已经完成了，但是我无法在FacilityBooking模型类中parsingfacilityXXXXXXXX。然后我再次需要在另一个预订模型类中parsing预订。

struct Facilities_id { let key: String var facilities: FacilityBooking let ref: FIRDatabaseReference init(snapshot: FIRDataSnapshot) { key = snapshot.key ref = snapshot.ref let snapshotValue = snapshot.value as! [String: AnyObject] } } 

这是我用来获取数据的代码

 let ref = FIRDatabase.database().reference(withPath: "facility") ref.observe(.value, with: { snapshot in // 2 var facility: [Facilities_id] = [] // 3 for code in snapshot.children { // 4 let facilityObj = Facilities_id(snapshot: code as! FIRDataSnapshot) facility.append(facilityObj) } // 5 self.facility_id_Arr = facility print("facitlities ---",self.facility_id_Arr) }) 

Answer 1

你需要首先像这样改变你的两个struct 。

 struct Facilities_id { let key: String let facilityId: String var facilities: [FacilityBooking] let desc: String let name: String let ref: FIRDatabaseReference init(snapshot: FIRDataSnapshot, id: String, dictionary: [String:Any]) { key = snapshot.key ref = snapshot.ref facilityId = id desc = dictionary["desc"] as? String ?? "" name = dictionary["name"] as? String ?? "" let bookingDic = dictionary["booking"] as? [String:Any] ?? [String:Any]() facilities = bookingDic.map { FacilityBooking(bookingId: $0, dictionary: $1 as? [String:Any] ?? [:]) } } } struct FacilityBooking{ let bookingId: String let customer: String let price: Int let duration: Int let uid: String init(bookingId: String, dictionary: [String:Any]) { bookingId = bookingId customer = dictionary["customer"] as! String price = dictionary["price"] as! Int duration = dictionary["duration"] as! Int uid = dictionary["uid"] as! String } } 

现在只需创buildFacilities_id的数组。

 let ref = FIRDatabase.database().reference(withPath: "facility") ref.observe(.value, with: { snapshot in var facility: [Facilities_id] = [] for code in snapshot.children { let snapShot = code as! FIRDataSnapshot let value = snapShot.value as? [String:Any] ? [:] let facilityArray = value.map { Facilities_id(snapshot: snapShot, id: $0, dictionary: $1 as? [String:Any] ?? [:]) } facility += facilityArray } self.facility_id_Arr = facility print("facitlities ---",self.facility_id_Arr) })