Error build Core Data

[macpower]

Hi!!

I'm making an application for the first time I am using Core Data. In this case the application has a menu on the bottom that links to several. Xib

To begin working with Core Data've done the following:

-Add the framework
-Changing the import to Prefix.pch
"I've created a xcDataModel with all entities of my BD
"I generated the classes of entities automatically.

I added the following basis following what is added when using a template:

In delegate.h

 NSManagedObjectModel *managedObjectModel;
    NSManagedObjectContext *managedObjectContext;	    
    NSPersistentStoreCoordinator *persistentStoreCoordinator;
   
    @property (nonatomic, retain, readonly) NSManagedObjectModel *managedObjectModel;
    @property (nonatomic, retain, readonly) NSManagedObjectContext *managedObjectContext;
    @property (nonatomic, retain, readonly) NSPersistentStoreCoordinator *persistentStoreCoordinator;

In delegate.m:

- (void)applicationWillTerminate:(UIApplication *)application {
	
    NSError *error = nil;
    if (managedObjectContext != nil) {
        if ([managedObjectContext hasChanges] && ![managedObjectContext save:&error]) {
			/*
			 Replace this implementation with code to handle the error appropriately.
			 
			 abort() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development. If it is not possible to recover from the error, display an alert panel that instructs the user to quit the application by pressing the Home button.
			 */
			NSLog(@"Unresolved error %@, %@", error, [error userInfo]);
			abort();
        } 
    }
}



#pragma mark -
#pragma mark Core Data stack

/**
 Returns the managed object context for the application.
 If the context doesn't already exist, it is created and bound to the persistent store coordinator for the application.
 */
- (NSManagedObjectContext *) managedObjectContext {
	
    if (managedObjectContext != nil) {
        return managedObjectContext;
    }
	
    NSPersistentStoreCoordinator *coordinator = [self persistentStoreCoordinator];
    if (coordinator != nil) {
        managedObjectContext = [[NSManagedObjectContext alloc] init];
        [managedObjectContext setPersistentStoreCoordinator: coordinator];
    }
    return managedObjectContext;
}


/**
 Returns the managed object model for the application.
 If the model doesn't already exist, it is created by merging all of the models found in the application bundle.
 */
- (NSManagedObjectModel *)managedObjectModel {
	
    if (managedObjectModel != nil) {
        return managedObjectModel;
    }
    managedObjectModel = [[NSManagedObjectModel mergedModelFromBundles:nil] retain];    
    return managedObjectModel;
}


/**
 Returns the persistent store coordinator for the application.
 If the coordinator doesn't already exist, it is created and the application's store added to it.
 */
- (NSPersistentStoreCoordinator *)persistentStoreCoordinator {
	
    if (persistentStoreCoordinator != nil) {
        return persistentStoreCoordinator;
    }
	
    NSURL *storeUrl = [NSURL fileURLWithPath: [[self applicationDocumentsDirectory] stringByAppendingPathComponent: @"miBD.sqlite"]];
	
	NSError *error = nil;
    persistentStoreCoordinator = [[NSPersistentStoreCoordinator alloc] initWithManagedObjectModel:[self managedObjectModel]];
    if (![persistentStoreCoordinator addPersistentStoreWithType:NSSQLiteStoreType configuration:nil URL:storeUrl options:nil error:&error]) {
		/*
		 Replace this implementation with code to handle the error appropriately.
		 
		 abort() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development. If it is not possible to recover from the error, display an alert panel that instructs the user to quit the application by pressing the Home button.
		 
		 Typical reasons for an error here include:
		 * The persistent store is not accessible
		 * The schema for the persistent store is incompatible with current managed object model
		 Check the error message to determine what the actual problem was.
		 */
		NSLog(@"Unresolved error %@, %@", error, [error userInfo]);
		abort();
    }    
	
    return persistentStoreCoordinator;
}


#pragma mark -
#pragma mark Application's Documents directory

/**
 Returns the path to the application's Documents directory.
 */
- (NSString *)applicationDocumentsDirectory {
	return [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject];
}

I do not know if this is the same as I put in the viewController associated with each. Xib or if I can use what is already in the delegate and in that case as it should because then I made a simple test to do an insert I get a compilation error.

The insert code is:

- (IBAction)crear
{
	
	ePrueba *prueba=(ePrueba *) [NSEntityDescription insertNewObjectForEntityForName:@"ePrueba"
															  inManagedObjectContext:self.managedObjectContext];
	prueba.atributo1=atributo1.text;
	prueba.atributo2=atributo2.text;
	prueba.atributo3=atributo3.text;
	prueba.atributo4=atributo4.text;
	[self.managedObjectContext save:NULL];
	
}

The compiler error says "ePrueba" is declared and that is its first use in function ...., but it repainted it as though it recognize that is an entity

Thank you very much in advance

[macpower]

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