6 replies to this topic

[Cesar Porras]

Hi again,

Trying to set a predicate on the SCArrayOfObjectsModel. The examples I've found use
tableViewModelWithTableView:withViewController:withEntityClassDefinition:usingPredicate:
but I can't use it. The closest i've found is modelWithTableView. When I use it I, I get the full list (not filtered). I can't see what I'm doing wrong. Here's the code I'm using:


SCEntityDefinition *entriesDef =[SCEntityDefinition definitionWithEntityName:@"WOSession" managedObjectContext:context propertyNamesString:@"sessionDate"];

NSPredicate *predicate = [NSPredicate predicateWithFormat:@"sessionDate == %@",[selDate valueForKey:@"sessionDate"]];
SCArrayOfObjectsModel *exModel = [SCArrayOfObjectsModel modelWithTableView:self.tableView entityDefinition:entriesDef filterPredicate:predicate];

exModel.itemsAccessoryType=UITableViewCellAccessoryNone;

self.tableViewModel = exModel;

Thanks in advance for your help.

[Tarek]

Hi Cesar,

The code you pasted above should work. Are you sure your predicate is formatted correctly? (you can try a different simple predicate just to test that it's working).

[Cesar Porras]

Hi,

I tried a simple predicate with an SCTableViewController. That worked the way I expected (filtered).

I tried the same predicate with an SCViewController and an SCArrayOfObjectsModel and I getting the full list (not filtered).

The reason I'm using the SCViewController is that I need to add a toolbar and bar button items. I'm able to add those with an SCViewController and not on the SCTableViewController. Maybe my approach is wrong.

[Tarek]

You approach is actually perfectly correct. Would you please post all the code in your view controller? Thanks.

[Cesar Porras]

#import "ExercisesViewController.h"

@interface ExercisesViewController ()

@end

@implementation ExercisesViewController

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}

- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view.

NSManagedObjectContext *context = [(id)[UIApplication
sharedApplication].delegate managedObjectContext];

if (!context) {
NSLog(@"There is an error!!!");
}

if (context == nil) {
NSLog(@"Context is nil in UserViewController");
}
else {
NSLog(@"Context is set in UserViewController");
}

self.navigationBarType = SCNavigationBarTypeAddEditRight;

//Add theme
self.tableViewModel.theme = [SCTheme themeWithPath:@"Theme.sct"];

// Create the exercise definition
SCEntityDefinition *entriesDef =[SCEntityDefinition definitionWithEntityName:@"Exercises" managedObjectContext:context propertyNamesString:@"name;reps;weight;date"];
NSLog(@"Exercies for Predicate: %@", @"Bicep Curls");

//SCArrayOfObjectsModel *exModel = [SCArrayOfObjectsModel modelWithTableView:self.tableView entityDefinition:entriesDef];

NSPredicate *predicate = [NSPredicate predicateWithFormat:@"name == %@",@"Bicep Curls"];

SCArrayOfObjectsModel *exModel = [SCArrayOfObjectsModel modelWithTableView:self.tableView entityDefinition:entriesDef filterPredicate:predicate];

exModel.addButtonItem = self.addButton;
[SCTableViewCell cellWithText:@"No Exercises yet!"
textAlignment: NSTextAlignmentCenter];


self.tableViewModel = exModel;
}

- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}

@end
=========================================================================================================================================

#import "ExercisesTableViewController.h"

@interface ExercisesTableViewController ()

@end

@implementation ExercisesTableViewController

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}

- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view.

NSManagedObjectContext *context = [(id)[UIApplication
sharedApplication].delegate managedObjectContext];

if (!context) {
NSLog(@"There is an error!!!");
}

if (context == nil) {
NSLog(@"Context is nil in UserViewController");
}
else {
NSLog(@"Context is set in UserViewController");
}

self.navigationBarType = SCNavigationBarTypeAddEditRight;


// Create the Exercise definition
SCEntityDefinition *exerDef =
[SCEntityDefinition definitionWithEntityName:@"Exercises"
managedObjectContext:context
propertyNamesString:@"name;reps;weight;date"];
SCPropertyDefinition *namePropertyDef = [exerDef
propertyDefinitionWithName:@"name"];
namePropertyDef.required = TRUE;
namePropertyDef.title = @"Exercise Name";

NSPredicate *predicate = [NSPredicate predicateWithFormat:@"name == %@",@"Bicep Curls"];

// Create the the user section
SCArrayOfObjectsSection *exerSection =
[SCArrayOfObjectsSection sectionWithHeaderTitle:nil
entityDefinition:exerDef filterPredicate:predicate];
exerSection.addButtonItem = self.addButton;
exerSection.placeholderCell =
[SCTableViewCell cellWithText:@"No Exercises yet!"
textAlignment: NSTextAlignmentCenter];


[self.tableViewModel addSection:exerSection];


}

- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}

@end
=========================================================================================================================================

Entity: Exercises
Attributes: name,resp,weight,date

[Cesar Porras]

As a work around, is it possible to add customized buttons (previous and next) tied to the filter on the right side of the navigation bar (in place of the + and edit buttons) in an SCTableViewController?

[Tarek]

Hi Cesar,

Please try replacing:

NSPredicate *predicate = [NSPredicatepredicateWithFormat:@"name == %@",@"Bicep Curls"];

With

NSPredicate *predicate = [NSPredicatepredicateWithFormat:@"name == '%@'",@"Bicep Curls"];

And let me know if it's working now.