Re: Editing core data attributes via code

Subject: Re: Editing core data attributes via code
From: Lee Morgan <email@hidden>
Date: Mon, 20 Jun 2005 16:31:06 -0400

I believe you need to do a fetch request. NSEntityDescription entityForName.... is just that a entity _description_ that you can use for a fetch request.

If you execute a fetch request (see NSManagedObjectContext) without a predicate then it will return all instances of the given entity, that should get you the User managed object you seek.

Also note that your setting user (of class NSManagedObject) to a instance of NSEntityDescription.

If the User managed object is connected to a conroller (object, tree or array) then you could also access it though that.

- Lee

On Jun 20, 2005, at 4:04 PM, J. Atwood wrote:

// Saves hash of user's password.
- (void)controlTextDidEndEditing:(NSNotification *)aNotification
{
NSString *password = [[aNotification object] stringValue];

SSCrypto *crypto = [SSCrypto alloc];
[crypto setClearTextWithString:password];

NSString *passwordHash = [[crypto digest:@"MD5"] hexdump];

   // Here's where I go astray.
NSManagedObject *user = nil;
user = [NSEntityDescription entityForName:@"User" inManagedObjectContext:
   [TestAppDelegate managedObjectContext]];

[user setValue: passwordHash forKey: @"password"];
}

A. Am I getting a reference to the User managed object correctly?

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References:
	>Editing core data attributes via code (From: "J. Atwood" <email@hidden>)

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