Passing one to many core data between view controllers

Passing one to many core data between view controllers

I am having problems passing data between view controllers.
All three view controllers are table views.
WorkoutTypeVC
WorkoutSetVC
WorkoutExerciseVC
I have three entities,
WorkoutType
workouts(->WorkoutSet) One to Many
WorkoutSet
exercises(->WorkoutExercise) One to Many
workoutType(->WorkoutType) Inverse
WorkoutExercise
workoutSet(->WorkoutSet) Inverse
I am able to switch between all three view controllers, WorkoutTypeVC
loads correctly showing all entries, When selected WorkoutSetVC is loaded
showing the correct entries corresponding to the selection made from
WorkoutTypeVC.
But when i select an entry from WorkoutSetVC, WorkoutExerciseVC loads but
is empty, Even the title of the selection doesn't load.
I have used the same code which i used when switching from WorkoutTypeVC
and WorkoutSetVC.
Below is the code for switching views in WorkoutType.m file:
- (void)tableView:(UITableView *)tableView
didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
WorkoutType *workoutType = (WorkoutType
*)[self.fetchedResultsController objectAtIndexPath:indexPath];
WorkoutSetViewController *detailViewController =
[[WorkoutSetViewController alloc] initWithWorkoutType:workoutType];
[self.navigationController pushViewController:detailViewController
animated:YES];
}
Below is the code for WorkoutSetVC.m
- (id)initWithWorkoutType:(WorkoutType *)workoutType
{
self = [super initWithStyle:UITableViewStylePlain];
if (self)
{
self.workoutType = workoutType;
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
self.title = self.workoutType.workoutType;
}
- (UITableViewCell *)tableView:(UITableView *)tableView
cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = @"Cell";
UITableViewCell *cell =
[tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil)
{
cell = [[UITableViewCell alloc]
initWithStyle:UITableViewCellStyleSubtitle
reuseIdentifier:CellIdentifier];
cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
}
WorkoutSet *workoutSet = [self.workoutType.workouts.allObjects
objectAtIndex:indexPath.row];
cell.textLabel.text = workoutSet.workoutName;
cell.detailTextLabel.text = [NSString stringWithFormat:@"(%d)",
workoutSet.exercises.count];
return cell;
}
- (void)tableView:(UITableView *)tableView
didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
WorkoutSet *workoutSet = (WorkoutSet *)[self.fetchedResultsController
objectAtIndexPath:indexPath];
WorkoutExerciseTableViewController *detailViewController =
[[WorkoutExerciseTableViewController alloc]
initWithWorkoutSet:workoutSet];
[self.navigationController pushViewController:detailViewController
animated:YES];
}
Below is the code for WorkoutExercise.m
- (id)initWithWorkoutSet:(WorkoutSet *)workoutSet
{
self = [super initWithStyle:UITableViewStylePlain];
if (self)
{
self.workoutSet = workoutSet;
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
self.title = self.workoutSet.workoutName;
}
- (UITableViewCell *)tableView:(UITableView *)tableView
cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = @"Cell";
UITableViewCell *cell =
[tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil)
{
cell = [[UITableViewCell alloc]
initWithStyle:UITableViewCellStyleSubtitle
reuseIdentifier:CellIdentifier];
cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
}
WorkoutExercise *exercise = [self.workoutSet.exercises.allObjects
objectAtIndex:indexPath.row];
cell.textLabel.text = exercise.exerciseName;
return cell;
}
Not sure as to what i need to do for the third view controller to list all
the entries, Even the title for the third view controller doesn't load
which is coded in the ViewDidLoad Method.
Thank You