Multiple Realm objects to JSON - swift

Question

I am trying to convert Realm Object into JSON. My version is working but not if you want to put multiple objects into JSON. So my question is, how should you add multiple Realm Objects into JSON?
Something like that:
{
"Users": [
{"id": "1","name": "John"},{"id": "2","name": "John2"},{"id": "3","name": "John3"}
],
"Posts": [
{"id": "1","title": "hey"},{"id": "2","title": "hey2"},{"id": "3","title": "hey3"}
]
}
This is what I am doing right now:
func getRealmJSON(name: String, realmObject: Object, realmType: Any) -> String {
do {
let realm = try Realm()
let table = realm.objects(realmType as! Object.Type)
if table.count == 0 {return "Empty Table"}
let mirrored_object = Mirror(reflecting: realmObject)
var properties = [String]()
for (_, attr) in mirrored_object.children.enumerated() {
if let property_name = attr.label as String! {
properties.append(property_name)
}
}
var jsonObject = "{\"\(name)\": ["
for i in 1...table.count {
var str = "{"
var insideStr = String()
for property in properties {
let filteredTable = table.value(forKey: property) as! [Any]
insideStr += "\"\(property)\": \"\(filteredTable[i - 1])\","
}
let index = insideStr.characters.index(insideStr.startIndex, offsetBy: (insideStr.count - 2))
insideStr = String(insideStr[...index])
str += "\(insideStr)},"
jsonObject.append(str)
}
let index = jsonObject.characters.index(jsonObject.startIndex, offsetBy: (jsonObject.count - 2))
jsonObject = "\(String(jsonObject[...index]))]}"
return jsonObject
}catch let error { print("\(error)") }
return "Problem reading Realm"
}
Above function does like that, which is good for only one object:
{"Users": [{"id": "1","name": "John"},{"id": "2","name": "John2"},{"id": "3","name": "John3"}]}
Like this I call it out:
let users = getRealmJSON(name: "Users", realmObject: Users(), realmType: Users.self)
let posts = getRealmJSON(name: "Posts", realmObject: Posts(), realmType: Posts.self)
And I tried to attach them.
Can anybody please lead me to the right track?

Answer 1

You can use data models to encode/decode your db data:
For example you have
class UserEntity: Object {
#objc dynamic var id: String = ""
#objc dynamic var createdAt: Date = Date()
#objc private dynamic var addressEntities = List<AddressEntity>()
var addresses: [Address] {
get {
return addressEntities.map { Address(entity: $0) }
}
set {
addressEntities.removeAll()
let newEntities = newValue.map { AddressEntity(address: $0) }
addressEntities.append(objectsIn: newEntities)
}
}
}
Here you hide addressEntities with private and declare addresses var with Address struct type to map entities into proper values;
And then use
struct User: Codable {
let id: String
let createdAt: Date
let addresses: [Address]
}
And then encode User struct any way you want