Question

我在firebase中有这种形式的数据，我需要显示设施及其相应的预订，以便我可以在模型类中解析这些数据。我是解析的新手。我已经完成但是我无法在FacilityBooking模型类中解析facilityXXXXXXXX。然后我再次需要在另一个预订模型类中解析预订。

 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

您需要先以这种方式更改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
    }
}

现在只需创建Facilities_id。

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)
})

从firebase在模型类中解析数据

1 个答案: