Get data from Realm List<> - ios

Question

So this is how my Realm classes looks like:
class Workout: Object {
#objc dynamic var date: Date? // Date I did the exercise
#objc dynamic var exercise: String? // Name of exercise, example; Bench Press, Squat, Deadlift etc..
// List of sets (to-many relationship)
var sets = List<Set>()
}
class Set: Object {
#objc dynamic var reps: Int = 0 // Number of reps for the each set
#objc dynamic var kg: Double = 0.0 // Amount of weight/kg for each set
#objc dynamic var notes: String? // Notes for each set
// Define an inverse relationship to be able to access your parent workout for a particular set (if needed)
var parentWorkout = LinkingObjects(fromType: Workout.self, property: "sets")
convenience init(numReps: Int, weight: Double, aNote: String) {
self.init()
self.reps = numReps
self.kg = weight
self.notes = aNote
}
}
I want to get the weight(kg) and number of reps for each set, from the last time I did this exercise. So I am trying something like this. To query a workout with exercise "Text Exercise2", I do this:
func queryFromRealm() {
let realm = try! Realm()
let getExercises = realm.objects(Workout.self).filter("exercise = 'Text Exercise2'").sorted(byKeyPath: "date",ascending: false)
print(getExercises.last!)
myTableView.reloadData()
}
That gives me an output of this:
Workout {
date = 2019-11-24 00:33:21 +0000;
exercise = Text Exercise2;
sets = List<Set> <0x600003fcdb90> (
[0] Set {
reps = 12;
kg = 7;
notes = light workout;
},
[1] Set {
reps = 12;
kg = 8;
notes = medium workout;
},
[2] Set {
reps = 12;
kg = 9;
notes = heavy workout;
}
);
}
This is how I am passing data from mainVC to ExerciseCreatorViewController:
var selectedWorkout = Workout()
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if segue.identifier == "toEditExerciseCreatorSegue" {
if let nextVC = segue.destination as? ExerciseCreatorViewController {
nextVC.selectedWorkout = self.selectedWorkout
}
}
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
tableView.deselectRow(at: indexPath, animated: true)
selectedWorkout = resultFromDate[indexPath.row]
performSegue(withIdentifier: "toEditExerciseCreatorSegue", sender: self)
}
From now on, I want to add these into at UITableView, where each row contains the kg and number of reps. How can I do this? Should I change my setup somehow? Looking forward for your help.
EDIT - Uploaded the whole ExerciseCreatorViewController.swift file:
import UIKit
import RealmSwift
class ExerciseCreatorViewController: UIViewController, UITextFieldDelegate, UITableViewDelegate, UITableViewDataSource {
let menuButtonSize: CGSize = CGSize(width: 44, height: 44)
let actionButtonSize: CGSize = CGSize(width: 44, height: 66)
let screenSize: CGRect = UIScreen.main.bounds
var resultFromDate:[Workout] = []
var selectedWorkout = Workout()
#IBOutlet var exerciseNameTextField: UITextField!
let exerciseName = UILabel()
#IBOutlet var navView: UIView!
let navLabel = UILabel()
#IBOutlet var tableView: UITableView!
override func viewDidLoad() {
super.viewDidLoad()
tableView.delegate = self
tableView.dataSource = self
exerciseNameTextField.delegate = self
// Get main screen bounds
let screenSize: CGRect = UIScreen.main.bounds
let screenWidth = screenSize.width
let screenHeight = screenSize.height
//self.view.backgroundColor = UIColor(red: 32/255, green: 32/255, blue: 32/255, alpha: 1.0)
self.view.backgroundColor = UIColor.white
// Navigation View
navView.frame = CGRect(x: 0, y: 0, width: screenSize.width, height: 66)
navView.frame.origin.y = 28
//navLabel.backgroundColor = UIColor(red: 32/255, green: 32/255, blue: 32/255, alpha: 1.0)
navLabel.backgroundColor = UIColor.white
//navView.backgroundColor = UIColor.red.withAlphaComponent(0.5)
self.view.addSubview(navView)
// Navigation Label
self.navView.addSubview(navLabel)
navLabel.frame = CGRect(x: 0, y: 0, width: screenSize.width, height: 66)
navLabel.textAlignment = .center
navLabel.font = UIFont.boldSystemFont(ofSize: 20)
navLabel.textColor = UIColor.black
//navLabel.text = "Workout"
navLabel.text = "Log workout"
navLabel.adjustsFontSizeToFitWidth = true
navLabel.isUserInteractionEnabled = true
self.view.backgroundColor = UIColor.white
configureButtons()
setupFooter()
self.hideKeyboard()
print("Printing ... ... ...")
print(selectedWorkout)
}
func setupFooter() {
let customView = UIView(frame: CGRect(x: 0, y: 0, width: screenSize.width, height: 50))
customView.backgroundColor = UIColor.lightGray
let button = UIButton(frame: CGRect(x: 0, y: 0, width: screenSize.width, height: 50))
button.setTitle("Add Set", for: .normal)
button.addTarget(self, action: #selector(buttonAction), for: .touchUpInside)
customView.addSubview(button)
tableView.tableFooterView = customView
}
#objc func buttonAction(_ sender: UIButton!) { // Add new set/row in tableView
print("Button tapped")
let a = Array(stride(from: 1, through: 50, by: 1)) // Haven't tested yet. Add new set in array
setsArray.append("a")
// Update Table Data
tableView.beginUpdates()
tableView.insertRows(at: [
(NSIndexPath(row: setsArray.count-1, section: 0) as IndexPath)
], with: .automatic)
tableView.endUpdates()
}
func configureButtons() {
confiureCloseButton()
confiureSaveButton()
confiureClearButton()
}
func confiureCloseButton() {
//let button = UIButton(frame: CGRect(x: 100, y: 100, width: 100, height: 50))
let button = UIButton(frame: CGRect(origin: CGPoint.zero, size: menuButtonSize))
button.setImage(UIImage(named: "icon_close"), for: UIControl.State.normal)
button.setImage(UIImage(named: "icon_close")?.alpha(0.5), for: UIControl.State.highlighted)
button.center = CGPoint(x: 50, y: 61)
button.layer.cornerRadius = button.frame.size.width/2
button.layer.zPosition = 1
button.addTarget(self, action: #selector(closeButtonAction), for: .touchUpInside)
button.setTitleColor(.black, for: UIControl.State.normal)
button.backgroundColor = UIColor.red
button.isUserInteractionEnabled = true
self.view.addSubview(button)
}
#objc func closeButtonAction(sender: UIButton!) {
self.dismiss(animated: true, completion: nil)
}
func confiureSaveButton() {
let button = UIButton(frame: CGRect(origin: CGPoint(x: screenSize.width-44-8, y: 28), size: actionButtonSize))
button.setTitle("Save", for: UIControl.State.normal)
//button.backgroundColor = UIColor.blue
button.layer.zPosition = 1
button.addTarget(self, action: #selector(saveButtonAction), for: .touchUpInside)
button.setTitleColor(.black, for: UIControl.State.normal)
button.isUserInteractionEnabled = true
self.view.addSubview(button)
}
#objc func saveButtonAction(sender: UIButton!) {
saveWorkout()
}
func confiureClearButton() {
let button = UIButton(frame: CGRect(origin: CGPoint(x: screenSize.width-44-8-44-8, y: 28), size: actionButtonSize))
button.setTitle("Clear", for: UIControl.State.normal)
//button.backgroundColor = UIColor.red
button.layer.zPosition = 1
button.addTarget(self, action: #selector(clearButtonAction), for: .touchUpInside)
button.isUserInteractionEnabled = true
button.setTitleColor(.black, for: UIControl.State.normal)
self.view.addSubview(button)
}
#objc func clearButtonAction(sender: UIButton!) {
clearWorkout()
}
func clearWorkout() { // Clear workout exercise
print("clear")
}
let nowDate = Date()
var setsArray = [String]()
var previousArray = [String]()
var kgArray = [String]()
var repsArray = [String]()
var notesArray = [String]()
func saveWorkout() { // Save workout exercise
if setsArray.isEmpty {//if !setsArray.isEmpty {
print("Saving workout...")
/*let realm = try! Realm()
let myWorkout = Workout()
myWorkout.date = nowDate
myWorkout.exercise = "Text Exercise"
let aSet0 = Set(numReps: 12, weight: 11.5, aNote: "light workout")
let aSet1 = Set(numReps: 12, weight: 12.5, aNote: "medium workout")
let aSet2 = Set(numReps: 12, weight: 21.0, aNote: "heavy workout")
myWorkout.sets.append(objectsIn: [aSet0, aSet1, aSet2] )
try! realm.write {
realm.add(myWorkout)
print("Saved!")
}*/
} else {
// create the alert
let alert = UIAlertController(title: nil, message: "Please add any exercise before saving!", preferredStyle: UIAlertController.Style.alert)
// add an action (button)
alert.addAction(UIAlertAction(title: "OK", style: UIAlertAction.Style.default, handler: nil))
// show the alert
self.present(alert, animated: true, completion: nil)
}
}
// number of rows in table view
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return setsArray.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath) as! ExerciseCreatorCell
let realm = try! Realm()
let getExercises = realm.objects(Workout.self).filter("exercise = 'Text Exercise2'").sorted(byKeyPath: "date",ascending: false)
print(getExercises.last!)
let myWorkout = Workout()
// Find the Workout instance "Bench Press"
let benchPressWorkout = realm.objects(Workout.self).filter("exercise = 'Text Exercise2'").sorted(byKeyPath: "date",ascending: false)
// Access the sets for that instance
let sets = benchPressWorkout[0].sets
for i in sets.indices {
let set0 = sets[i]
// Access reps and kg for set 0
let reps0 = set0.reps
let kg0 = set0.kg
// and so on ...
print([kg0]) // number of KG
print([reps0]) // number of reps
cell.previousTextField.text = "\(kg0) x \(reps0)"
}
cell.setLabel.text = "\(indexPath.row + 1)"
return cell
}
// method to run when table view cell is tapped
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
print("tapped")
}
}
EDIT: I have three objects as #rs7 suggested earlier:
Workout.swift:
#objc dynamic var id = 0
#objc dynamic var date: Date?
// List of exercises (to-many relationship)
var exercises = List<Exercise>()
override static func primaryKey() -> String? {
return "id"
}
Exercise.swift
class Exercise: Object {
#objc dynamic var name: String?
// List of sets (to-many relationship)
var sets = List<Set>()
var parentWorkout = LinkingObjects(fromType: Workout.self, property: "exercises")
}
Set.swift
class Set: Object {
#objc dynamic var reps: Int = 0
#objc dynamic var kg: Double = 0.0
#objc dynamic var notes: String?
// Define an inverse relationship to be able to access your parent workout for a particular set (if needed)
var parentExercise = LinkingObjects(fromType: Exercise.self, property: "sets")
convenience init(numReps: Int, weight: Double, aNote: String) {
self.init()
self.reps = numReps
self.kg = weight
self.notes = aNote
}
}

Answer 1

I'll give you the answer anyway, but don't forget to fix your code.
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
// number of rows = number of sets (not counting the header row)
return selectedExercise.sets.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath) as! ExerciseCreatorCell
let currentSet = selectedExercise.sets[indexPath.row]
cell.setNumberLabel.text = "\(indexPath.row)"
cell.kgLabel.text = "\(currentSet.kg)"
cell.repsLabel.text = "\(currentSet.reps)"
return cell
}