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POMultiple xcdatamodel files in Xcode
 

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  1. POMultiple xcdatamodel files in Xcode
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    <p>My project(for managing students' attendance in various classes) contains 2 xkcddatamodel files, one for the semester start/end dates and the other for the course data. If you look at <code>AppDelegate.m</code>, I've set the <code>modelURL</code> to the second model. How am I supposed to create a second context for the first <code>xkcddatamodel</code>? I've tried the solution given <a href="https://stackoverflow.com/questions/16146289/is-it-possilbe-to-have-mutliple-core-data-model-files-to-one-single-xcode-projec">here</a>. But no dice. Xcode isn't even recognising it and is asking me to replace <code>managedObjectContext2</code> with <code>managedObjectContext</code>. How do I fix this?</p> <p>Dropbox link to the project: <a href="https://www.dropbox.com/sh/ivl6nw6nw8p9j1y/MDwYDaHVH_" rel="nofollow noreferrer">https://www.dropbox.com/sh/ivl6nw6nw8p9j1y/MDwYDaHVH_</a></p> <p>Here's the AppDelegate.m</p> <pre><code>// // AppDelegate.m // timetable app // // Created by Robin Malhotra on 22/12/13. // Copyright (c) 2013 Robin's code kitchen. All rights reserved. // #import "AppDelegate.h" #import &lt;CoreData/CoreData.h&gt; @implementation AppDelegate - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { // Override point for customization after application launch. return YES; } // Explicitly write Core Data accessors - (NSManagedObjectContext *) managedObjectContext { if (managedObjectContext != nil) { return managedObjectContext; } NSPersistentStoreCoordinator *coordinator = [self persistentStoreCoordinator]; if (coordinator != nil) { managedObjectContext = [[NSManagedObjectContext alloc] init]; [managedObjectContext setPersistentStoreCoordinator: coordinator]; } return managedObjectContext; } - (NSManagedObjectModel *)managedObjectModel { if (managedObjectModel != nil) { return managedObjectModel; } // removed some code about retain here as ARC hates that return managedObjectModel; } - (NSPersistentStoreCoordinator *)persistentStoreCoordinator { if (persistentStoreCoordinator != nil) { return persistentStoreCoordinator; } NSURL *storeUrl = [NSURL fileURLWithPath: [[self applicationDocumentsDirectory] stringByAppendingPathComponent: @"Courses.sqlite"]]; NSURL *modelURL = [[NSBundle mainBundle] URLForResource:@"ClassesAttended" withExtension:@"momd"]; managedObjectModel=[[NSManagedObjectModel alloc]initWithContentsOfURL:modelURL]; NSError *error = nil; persistentStoreCoordinator = [[NSPersistentStoreCoordinator alloc] initWithManagedObjectModel:[self managedObjectModel]]; if(![persistentStoreCoordinator addPersistentStoreWithType:NSSQLiteStoreType configuration:nil URL:storeUrl options:nil error:&amp;error]) { /*Error for store creation should be handled in here*/ } return persistentStoreCoordinator; } - (NSString *)applicationDocumentsDirectory { return [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject]; } /* (...Existing Application Code...) */ -(NSArray *)getAllCourses { NSFetchRequest *request=[[NSFetchRequest alloc]init]; NSEntityDescription *entitydesc=[NSEntityDescription entityForName:@"Course" inManagedObjectContext:managedObjectContext]; [request setEntity:entitydesc]; NSError *error; NSArray *fetchedCourses=[self.managedObjectContext executeFetchRequest:request error:&amp;error]; return fetchedCourses; } @end </code></pre> <p>and here's the AppDelegate.h</p> <pre><code>#import &lt;UIKit/UIKit.h&gt; @interface AppDelegate : UIResponder &lt;UIApplicationDelegate&gt; { NSManagedObjectModel *managedObjectModel; NSManagedObjectContext *managedObjectContext; NSPersistentStoreCoordinator *persistentStoreCoordinator; } @property (strong, nonatomic) UIWindow *window; @property (nonatomic, readonly) NSManagedObjectModel *managedObjectModel; @property (nonatomic, readonly) NSManagedObjectContext *managedObjectContext; @property (nonatomic, readonly) NSPersistentStoreCoordinator *persistentStoreCoordinator; @property (nonatomic, readonly) NSManagedObjectModel *managedObjectModel2; @property (nonatomic, readonly) NSManagedObjectContext *managedObjectContext2; @property (nonatomic, readonly) NSPersistentStoreCoordinator *persistentStoreCoordinator2; - (NSString *)applicationDocumentsDirectory; - (NSArray *)getAllCourses; @end </code></pre>
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    1. USCœur
    1. USRobin
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    1. CODo you need two separate xcdatamodel files?
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      1. POMultiple xcdatamodel files in Xcode
      1. USRogiel Sulzbach
    2. COFYI: Links to external content are discouraged. Please post *relevant* code in your question.
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      1. POMultiple xcdatamodel files in Xcode
      1. USmarko
    3. COYeah. I'll be needing 2 xcdatamodelfiles. I'll post the relevant code
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      1. POMultiple xcdatamodel files in Xcode
      1. USRobin
 

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