Day Models

Create a new Model Classes "Day"

A Day is the record of habits for that day. We'll add a helper function to create one Day adding all Habits already added to the Realm.

/Model/Day.swift

import Foundation
import RealmSwift

public class Day: Object, ObjectKeyIdentifiable {
    @Persisted(primaryKey: true) var _id: ObjectId

    @Persisted var date = Date()
    @Persisted var habits = RealmSwift.List<Habit>()
    
    static func createDayWithHabitsInRealm(realm: Realm) -> Day {
        let day = Day()
        
        let allHabits = realm.objects(Habits.self)
        if let firstHabitCollection = allHabits.first {
            let habits = firstHabitCollection.habits
            
            if !habits.isEmpty {
                for habit in habits {
                    day.habits.append(Habit.from(habit))
                }
            }
        }

        return day
    }
}

Update Habit

We're using here a static method Habit.from that we need to add to our Habit model:

/Model/Habit.swift

static func from(_ habit: Habit) -> Habit {
    return Habit(name: habit.name, desc: habit.desc)
}

Create a new Model Class "Days"

This will contain a list of all the days we've been tracking our habits.

/Model/Days.swift

import Foundation
import RealmSwift

class Days: Object, ObjectKeyIdentifiable {
    @Persisted(primaryKey: true) var _id: ObjectId

    @Persisted var days = RealmSwift.List<Day>()
}