所以我暂时失去了判断力。我更改了保存事件的数据库。我希望事件具有标签和主机。我已经成功地按照我认为的外观构建了数据库，但我很难更改模型来检索此元素数组。
这是我目前的型号
import Foundation
import FirebaseDatabase.FIRDataSnapshot
@objc(Event)
class Event:NSObject{
var key: String?
let currentEventName: String
let currentEventImage: String
let currentEventPromo: String?
let currentEventDescription: String
//nested properties
let currentEventStreetAddress: String
let currentEventCity: String
let currentEventState: String
let currentEventDate: String?
let currentEventEndDate: String?
let currentEventTime: String?
let currentEventEndTime: String?
let eventPrice: String
let endTime: Date
let startTime: Date
let currentEventZip: Int
var category: String
//nested properties stop
var currentAttendCount: Int
var isAttending = false
var eventDictionary: [String: Any]{
let dateDict = ["start:date":currentEventDate, "start:time": currentEventTime,"end:time":currentEventEndTime, "end:date": currentEventEndDate]
let timeDict = ["end":endTime, "start": startTime]
return ["event:name":currentEventName,"event:imageURL" : currentEventImage,
"event:description": currentEventDescription, "attend:count": currentAttendCount,
"event:street:address": currentEventStreetAddress,"event:zip": currentEventZip,"event:price":eventPrice,
"event:state": currentEventState, "event:city": currentEventCity, "event:promo": currentEventPromo ?? "", "event:date": dateDict, "event:category":category,"event:datetime": timeDict]
}
init(currentEventKey: String, dictionary: [String:Any]) {
self.key = currentEventKey
self.currentEventName = dictionary["event:name"] as? String ?? ""
self.currentEventImage = dictionary["event:imageURL"] as? String ?? ""
self.currentEventDescription = dictionary["event:description"] as? String ?? ""
self.currentEventPromo = dictionary["event:promo"] as? String ?? ""
self.currentAttendCount = dictionary["attend:count"] as? Int ?? 0
self.category = dictionary["event:category"] as? String ?? ""
self.eventPrice = dictionary["event:price"] as? String ?? ""
//nested properties
self.currentEventStreetAddress = dictionary["event:street:address"] as? String ?? ""
self.currentEventCity = dictionary["event:city"] as? String ?? ""
self.currentEventState = dictionary["event:state"] as? String ?? ""
self.currentEventZip = dictionary["event:zip"] as? Int ?? 0
//////
let eventTime = dictionary["event:datetime"] as? [String: Any]
let startInSeconds = eventTime!["start"] as? Double
let endInSeconds = eventTime!["end"] as? Double
self.startTime = Date(timeIntervalSince1970: startInSeconds!)
self.endTime = Date(timeIntervalSince1970: endInSeconds!)
////////
let eventDate = dictionary["event:date"] as? [String: Any]
self.currentEventDate = eventDate?["start:date"] as? String ?? ""
self.currentEventTime = eventDate?["start:time"] as? String ?? ""
self.currentEventEndTime = eventDate?["end:time"] as? String ?? ""
self.currentEventEndDate = eventDate?["end:date"] as? String ?? ""
}
init?(snapshot: DataSnapshot) {
guard let dict = snapshot.value as? [String : Any],
let currentEventName = dict["event:name"] as? String,
let currentEventImage = dict["event:imageURL"] as? String,
let currentEventDescription = dict["event:description"] as? String,
let currentEventPromo = dict["event:promo"] as? String,
let category = dict["event:category"] as? String,
let currentEventStreetAddress = dict["event:street:address"] as? String,
let currentEventCity = dict["event:city"] as? String,
let currentEventState = dict["event:state"] as? String,
let currentEventZip = dict["event:zip"] as? Int,
let currentAttendCount = dict["attend:count"] as? Int,
let eventPrice = dict["event:price"] as? String,
//////
let eventDate = dict["event:date"] as? [String: Any],
let currentEventDate = eventDate["start:date"] as? String,
let currentEventEndDate = eventDate["end:date"] as? String,
let currentEventTime = eventDate["start:time"] as? String,
let currentEventEndTime = eventDate["end:time"] as? String,
/////
let eventTime = dict["event:datetime"] as? [String: Any],
let startInSeconds = eventTime["start"] as? Double,
let endInSeconds = eventTime["end"] as? Double
else { return nil }
self.key = snapshot.key
self.currentEventName = currentEventName
self.currentEventImage = currentEventImage
self.currentEventDescription = currentEventDescription
self.currentEventStreetAddress = currentEventStreetAddress
self.currentEventCity = currentEventCity
self.currentEventState = currentEventState
self.currentEventZip = currentEventZip
self.currentAttendCount = currentAttendCount
self.currentEventPromo = currentEventPromo
self.currentEventDate = currentEventDate
self.currentEventTime = currentEventTime
self.currentEventEndTime = currentEventEndTime
self.category = category
self.eventPrice = eventPrice
self.currentEventEndDate = currentEventEndDate
self.endTime = Date(timeIntervalSince1970: endInSeconds)
self.startTime = Date(timeIntervalSince1970: startInSeconds)
}
override func isEqual(_ object: Any?) -> Bool {
guard let event = object as? Event else { return false }
return self.key == event.key
}
}
这是我数据库中的一个节点，任何人都可以帮忙吗？
"BEVT" : {
"attend:count" : 1,
"event:category" : "Seize The Night",
"event:city" : "Philadelphia",
"event:date" : {
"end:date" : "07/11/2018",
"end:time" : "5:55 PM",
"start:date" : "06/20/2018",
"start:time" : "5:00 PM"
},
"event:datetime" : {
"end" : 1531346100,
"start" : 1529528400
},
"event:description" : "Travis Scott is ready to hit the road. The 24-year-old hitmaker will embark on his Birds Eye View tour, powered by Live Nation, in support of his sophomore album and Billboard 200 No. 1 Birds in the Trap Sing McKnight.\n\nScott's 25-city trek will include several festival stops, most notably Coachella and Bonnaroo. In between those performances, Scott will also touch down in major cities such as New York, Houston and Miami.",
"event:imageURL" : "https://firebasestorage.googleapis.com/v0/b/eventful-3d558.appspot.com/o/event_flyers%2FtravisScott-compressor.png?alt=media&token=c6e46da1-1395-4a37-a8fc-3ff53d5c0d4d",
"event:name" : "birds eye view tour",
"event:price" : "10",
"event:promo" : "https://firebasestorage.googleapis.com/v0/b/eventful-3d558.appspot.com/o/event_promo_vid%2FBEVT%2FTravis%20Scott_%20Houston%20Birds%20Eye%20View%20Tour%20Promo.mp4?alt=media&token=6d27d76e-281e-4083-a0ff-dbe2f25703e7",
"event:state" : "PA",
"event:street:address" : "5748 Baltimore Pike",
"event:zip" : 19143,
"host_user" : [ "XwOBrK6zJXRG7wltV1QvoVXi6Jg1" ],
"tags" : [ "concert", "travis scott", "hip hop" ]
}