Adding Realm Lists to an updated App

General Discussion
1

Hey All,

I will try over here and see if you all have any ideas.

I have an app in the app store that I am waiting to submit until I figure how to protect the user’s data they have already placed in the database

Here is the current Model:

Here are my models The first is the original:

class Registry: Object {

//Date, time, place and type
@objc dynamic var registryId = UUID().uuidString

@objc dynamic var dateTime:String?
@objc dynamic var proper:String?
@objc dynamic var service:String?
@objc dynamic var place:String?

//Attendance
//Sunday
@objc dynamic var sunEuchAttendance:Int = 0

//All Other services
@objc dynamic var otherServiceAttendance:Int = 0
@objc dynamic var EuchVisitor:Int = 0

//Commuion
@objc dynamic var numberOfCommunions:Int = 0

//People serving
@objc dynamic var presiderOfficiant:String?
@objc dynamic var preacher:String?
@objc dynamic var server:String?
@objc dynamic var memo:String?

//Stats
//Eucharist
@objc dynamic var weekendEuch:Int = 0
@objc dynamic var weekdayEuch:Int = 0
@objc dynamic var privateEuch:Int = 0

//Office
@objc dynamic var weekendOffice:Int = 0
@objc dynamic var weekdayOffice:Int = 0

//Other services
@objc dynamic var burrial:Int = 0
@objc dynamic var marraige:Int = 0

//Other services and memos
@objc dynamic var other:Int = 0

override static func primaryKey() -> String? {
return “registryId”
}

override static func indexedProperties() -> [String] {
return [“service”]
}
}

And when I update the app to include lists I need to migrate exiesting data into the new list:

class AllServices: Object {

var everything = List()
var eucharist = List()
var weekdayEucharist = List()
var office = List()
var weekdayOffice = List()
var marriage = List()
var burial = List()
var requiem = List()
var nuptial = List()
var other = List()
}

I was told to do this:

Here is how you should do:
1.) create a new list, with the type of property “var newList = List()”
2.) iterate over all of the old data and create a Registry from each of them “let newData = Registry.init(…)”
3.) add those data to the newList “newList.add(newData)”
4.) set the newData new property to the newList “newObject[“listProperty”] = newList”

But for the life of me, I can’t figure out how to execute the instructions. When I try them, I get s serries of errors.

Thanks so much for the help!

Blessings,
—Mark

2

why was the value set as List()?

anyway i think you need to know more details regarding the errors and the code how you executed this

3

Hey Francis,

Chris was instrumental in getting me unstuck with this problem. The Realm gurus in their forum were advising that I needed to update the lists in a migration block. Nope, that did not work. Instead, I already had initializing code that ran each time, I just looped through all the Registry objects and utilized a method I already had to save them to the Lists. So simple once I got unstuck!

Each List is a list of Registry objects that display the category. Since the typical user of the app will have a couple hundred Registry objects, being able to display just the group they were looking for with out having to duplicate that object is just what was needed. Hence a List.

Thanks.
Blessings,
—Mark