CoreData - could not locate an NSManagedObjectModel - objective-c

Question

I'm getting the error below, I don't know what I'm doing wrong.
I guess there is the managedobject which cannot be located, but... arf !
*** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: '+entityForName: could not locate an NSManagedObjectModel for entity name 'Boxes''
here is my .m ( only the two main functions )
- (void)loadCoreData
{
[[NSNotificationCenter defaultCenter] postNotificationName:#"Test" object:self];
context = [app managedObjectContext];
NSError *err;
// GET THE JSON
NSString *urlString = [NSString stringWithFormat:#"http://localhost:8888/json.txt"];
NSData *data = [NSData dataWithContentsOfURL:[NSURL URLWithString:urlString]];
NSMutableArray *json = (NSMutableArray* )[NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:&err];
// FILL THE ENTITY
for (int i = 0; i != 7; i++)
{
Boxes *boxes = [NSEntityDescription insertNewObjectForEntityForName:#"Boxes" inManagedObjectContext:context];
boxes.name = [[[json valueForKey:#"boxesDetail"] objectAtIndex:i] valueForKey:#"name"] ;
boxes.sexe = [[[json valueForKey:#"boxesDetail"] objectAtIndex:i] valueForKey:#"sexe"] ;
boxes.topic = [[[json valueForKey:#"boxesDetail"] objectAtIndex:i] valueForKey:#"topic"] ;
boxes.number = [NSNumber numberWithInt:[[[[json valueForKey:#"boxesDetail"] objectAtIndex:i] valueForKey:#"number"] intValue]];
}
request = [[NSFetchRequest alloc] init];
NSEntityDescription *entity = [NSEntityDescription entityForName:#"Boxes" inManagedObjectContext:context];
[request setEntity:entity];
arrayForPredicate = [context executeFetchRequest:request error:&err];
}
- (void) fillSexArray:(NSString *)sexe
{
// PREDICATE TO GET AN ARRAY OF PRODUCT WITH SEXE EQUAL TO
NSPredicate *sex;
if ([sexe isEqualToString:#"both"])
{
sex = [NSPredicate predicateWithFormat:#"sexe = %# OR sexe = %#", #"female", #"male"];
}
else
{
sex = [NSPredicate predicateWithFormat:#"sexe = %#", sexe];
}
NSArray *BoxWithSex = [arrayForPredicate filteredArrayUsingPredicate:sex];
NSMutableArray *mutableArray = [self createMutableArray:BoxWithSex];
// NSLog(#"%#", [[mutableArray objectAtIndex:1] valueForKey:#"name"]);
// NSUInteger numObjects = [mutableArray count];
}
my .h :
#interface AddViewController : UIViewController
{
IBOutlet UIButton *male;
IBOutlet UIButton *female;
IBOutlet UIButton *couple;
UIButton *maleBtn;
BOOL flag;
NSArray *arrayForPredicate;
NSFetchedResultsController *fetchedResultsController;
NSManagedObjectContext *context;
NSFetchRequest *request;
}
#property (nonatomic, retain) WonderAppDelegate *app;
- (void) fillSexArray:(NSString *)sexe;
- (NSMutableArray *)createMutableArray:(NSArray *)array;
- (void)loadCoreData;
- (void)sexeButtonPressed;
- (void)sexeArray;
#end
EDIT creating the managedObject :
+ (id)boxWithDictionary:(NSDictionary *)dict withManagedObjectContext:(NSManagedObjectContext *)managedObjectContext;
{
Boxes *boxes = [NSEntityDescription insertNewObjectForEntityForName:#"Boxes"
inManagedObjectContext:managedObjectContext];
boxes.name = [dict objectForKey:#"name"];
boxes.sexe = [dict objectForKey:#"sexe"];
boxes.topic = [dict objectForKey:#"topic"];
boxes.number = [dict objectForKey:#"number"];
return boxes;
}
This is my .m and it is working like that but i don't want the code of the function Add there i want it on loadCoreData.
//
// AddViewController.m
// CoreDataTuto
//
// Created by Clement Yerochewski on 30/04/12.
// Copyright (c) 2012 Weblib. All rights reserved.
//
#import "AddViewController.h"
#import "Boxes.h"
#implementation AddViewController
#synthesize app, context;
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
UINavigationBar *navBar = [[UINavigationBar alloc] initWithFrame:CGRectMake(0, 0, 768, 44)];
UINavigationItem *navItem = [[UINavigationItem alloc] initWithTitle:#"Add Detail"];
[navBar pushNavigationItem:navItem animated:NO];
UIBarButtonItem *cancelButton = [[UIBarButtonItem alloc] initWithTitle:#"Cancel" style:UIBarButtonItemStylePlain target:self action:#selector(cancel)];
UIBarButtonItem *addButton = [[UIBarButtonItem alloc] initWithTitle:#"Add" style:UIBarButtonItemStyleBordered target:self action:#selector(add)];
navItem.leftBarButtonItem = cancelButton;
navItem.rightBarButtonItem = addButton;
[self.view addSubview:navBar];
app = [[UIApplication sharedApplication] delegate];
}
return self;
}
- (void) add{
[self dismissModalViewControllerAnimated:YES];
// PREDICATE TO GET AN ARRAY OF PRODUCT WITH A LENGTH NAME <= 5
// NSPredicate *length;
// length = [NSPredicate predicateWithFormat:#"name.length <= 5"];
// NSArray *BoxWithCheapPrice = [array filteredArrayUsingPredicate:length];
// NSLog(#"Box %#", BoxWithCheapPrice);
// PREDICATE TO GET AN ARRAY OF PRODUCT WITH PRICE BETWEEN $MIN AND $MAX
// NSNumber *min = [NSNumber numberWithInteger:30];
// NSNumber *max = [NSNumber numberWithInteger:100];
// NSPredicate *between;
// between = [NSPredicate predicateWithFormat:#"number BETWEEN %#", [NSArray arrayWithObjects:min, max, nil]];
// NSArray *BoxWithPriceBetween = [array filteredArrayUsingPredicate:between];
// NSLog(#"Box %#", BoxWithPriceBetween);
// NSLog(#"%#", [BoxWithPriceBetween valueForKey:#"name"]);
}
- (NSMutableArray *)createMutableArray:(NSArray *)array
{
return [NSMutableArray arrayWithArray:array];
}
- (IBAction) sexeChoosen: (id) sender
{
switch ( ((UIButton*)sender).tag ){
case 0:
[self fillSexArray:#"male"];
break;
case 1:
[self fillSexArray:#"female"];
break;
default:
[self fillSexArray:#"both"];
}
[self sexeButtonPressed];
}
- (void)sexeButtonPressed
{
if (flag)
{
UIImage * maleImg2 = [UIImage imageNamed:#"pressed.png"];
[maleBtn setImage:maleImg2 forState:UIControlStateNormal];
flag = NO;
[self sexeArray];
}
else
{
UIImage * maleImg1 = [UIImage imageNamed:#"unpressed.png"];
[maleBtn setImage:maleImg1 forState:UIControlStateNormal];
flag = YES;
[self sexeArray];
}
}
- (void)sexeArray
{
}
- (void)loadCoreData
{
}
- (void) fillSexArray:(NSString *)sexe
{
context = [app managedObjectContext];
// GET THE JSON
NSString *urlString = [NSString stringWithFormat:#"http://localhost:8888/json.txt"];
NSData *data = [NSData dataWithContentsOfURL:[NSURL URLWithString:urlString]];
NSError *err;
NSMutableArray *json = (NSMutableArray* )[NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:&err];
// FILL THE ENTITY
for (int i = 0; i != 7; i++)
{
Boxes *boxes = [NSEntityDescription insertNewObjectForEntityForName:#"Boxes" inManagedObjectContext:context];
boxes.name = [[[json valueForKey:#"boxesDetail"] objectAtIndex:i] valueForKey:#"name"] ;
boxes.sexe = [[[json valueForKey:#"boxesDetail"] objectAtIndex:i] valueForKey:#"sexe"] ;
boxes.topic = [[[json valueForKey:#"boxesDetail"] objectAtIndex:i] valueForKey:#"topic"] ;
boxes.number = [NSNumber numberWithInt:[[[[json valueForKey:#"boxesDetail"] objectAtIndex:i] valueForKey:#"number"] intValue]];
}
NSFetchRequest *request = [[NSFetchRequest alloc] init];
NSEntityDescription *entity = [NSEntityDescription entityForName:#"Boxes" inManagedObjectContext:context];
[request setEntity:entity];
arrayForPredicate = [context executeFetchRequest:request error:&err];
NSPredicate *sex;
// PREDICATE TO GET AN ARRAY OF PRODUCT WITH SEXE EQUAL TO
if ([sexe isEqualToString:#"both"])
{
sex = [NSPredicate predicateWithFormat:#"sexe = %# OR sexe = %#", #"female", #"male"];
}
else
{
sex = [NSPredicate predicateWithFormat:#"sexe = %#", sexe];
}
NSArray *BoxWithSex = [arrayForPredicate filteredArrayUsingPredicate:sex];
NSMutableArray *mutableArray = [self createMutableArray:BoxWithSex];
NSLog(#"SEXE CHOOSEN %#", mutableArray);
// NSLog(#"%#", [[mutableArray objectAtIndex:1] valueForKey:#"name"]);
NSUInteger numObjects = [mutableArray count];
NSLog(#"%d", numObjects);
}
- (void) cancel{
[self dismissModalViewControllerAnimated:YES];
}
- (void)didReceiveMemoryWarning
{
// Releases the view if it doesn't have a superview.
[super didReceiveMemoryWarning];
// Release any cached data, images, etc that aren't in use.
}
#pragma mark - View lifecycle
- (void)viewDidLoad
{
flag = YES;
maleBtn = [UIButton buttonWithType:UIButtonTypeCustom];
maleBtn.frame = CGRectMake(40, 47, 107, 75);
[maleBtn setTitle:#"male" forState:UIControlStateNormal];
UIImage * maleImg1 = [UIImage imageNamed:#"unpressed.png"];
[maleBtn setImage:maleImg1 forState:UIControlStateNormal];
[maleBtn addTarget:self action:#selector(sexeChoosen:) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:maleBtn];
[self loadCoreData];
[super viewDidLoad];
// Do any additional setup after loading the view from its nib.
}
- (void)viewDidUnload
{
[super viewDidUnload];
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
// Return YES for supported orientations
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
#end

Answer 1

Have you updated your model after creating the persistent store? Try to delete your app from the simulator (or the database file) and run it again..