Getting string from NSManagedObject

Question

When I try to get a string value from an NSManagedObject, I get this

<Entity: 0x1e043140> (entity: Entity; id: 0x1e041c30 <x-coredata://8F48C331-B879-47B4-B257-4802A13ED12C/Entity/p4> ; data: {
number = "<UITextField: 0x1d8b7cc0; frame = (159 183; 161 30); text = 'test'; clipsToBounds = YES; opaque = NO; autoresize = RM+BM; gestureRecognizers = <NSArray: 0x1d8b3c10>; layer = <CALayer: 0x1d892a30>> : ";
})

how do I get the string from this (it's text = 'test';)

i get the object using this

NSString *rowValue = [self.fetchedResultsController objectAtIndexPath:indexPath];

ok, well the nsmanaged object is this and sets a uitableview cell to its string

NSManagedObject *object = [self.fetchedResultsController objectAtIndexPath:indexPath];

cell.textLabel.text = [[object valueForKey:@"number"] description];

The reason it's showing what it does is because, as you can see, I am getting it's description. I can't find a property that would return the text value, so does anyone know how? Thanks.

You have to obtain the actual `UITextField` and use its `text` property. — , Feb 09 '13 at 22:31
Yes, thanks, but I believe Levi has already had the answer. How about `entity.textField.text` or something like that? — , Feb 09 '13 at 22:47

Martin R · Accepted Answer · 2013-02-09T23:39:48.230

1

I assume that the error already occurs when you store a value in the managed object. Perhaps you do something like

[myObject setValue:[aTextField description] forKey:@"number"]

instead of storing the text field's text contents:

[myObject setValue:[aTextField text] forKey:@"number"]

UPDATE: As you write in a comment, the managed object values are stored as

NSString *string = [NSString stringWithFormat:@"%@ : %@", self.numtext, self.comtext];
[newManagedObject setValue:string forKey:@"number"];

But the %@ format for a UITextField itself is expanded to the text fields description, not the text contents. Therefore the string already looks like

"<UITextField: 0x1d8b7cc0; frame = (159 183; 161 30); text = 'test'; .... "

and this string is stored as "number" attribute in the managed object. You should use the following code instead:

NSString *string = [NSString stringWithFormat:@"%@ : %@", self.numtext.text, self.comtext.text];
[newManagedObject setValue:string forKey:@"number"];

Note that you have to delete the old database when testing this to get rid of the already existing wrong entries.

edited Feb 09 '13 at 23:39

answered Feb 09 '13 at 22:48

Martin R

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I add it like this `NSString *string = [NSString stringWithFormat:@"%@ : %@", self.numtext, self.comtext]; [newManagedObject setValue:string forKey:@"number"];' – Chris Loonam Feb 09 '13 at 22:50
If `self.numtext`, `self.comtext` are `UITextField` variables, then you have to use `[NSString stringWithFormat:@"%@ : %@", self.numtext.text, self.comtext.text]`. – Martin R Feb 09 '13 at 22:53
That did help me, I just notice what I did wrong there, but it still won't show the string. – Chris Loonam Feb 09 '13 at 22:59
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So what is the value of `object` now? – Martin R Feb 09 '13 at 23:00
same as before, but it saves the text, not null – Chris Loonam Feb 09 '13 at 23:04
So what is wrong now? - Does `[object valueForKey:@"number"]` have the correct value? – Martin R Feb 09 '13 at 23:06
let us [continue this discussion in chat](http://chat.stackoverflow.com/rooms/24245/discussion-between-martin-r-and-chris-loonam) – Martin R Feb 09 '13 at 23:07

score 0 · Answer 2 · answered Jun 18 '14 at 08:50

0

NSString *str = managedObject.objectID.URIRepresentation.absoluteString

answered Jun 18 '14 at 08:50

János

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Levi · Answer 3 · 2013-02-09T22:52:00.743

-1

You should write:

Entity *entity = [self.fetchedResultsController objectAtIndexPath:indexPath];
NSString *rowValue = entity.text;

Edit:

ok, then try object.number.text;

edited Feb 09 '13 at 22:52

answered Feb 09 '13 at 22:39

Levi

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entity doesn't have a text property – Chris Loonam Feb 09 '13 at 22:44
I tried `object.number` (number is a string already) but still not working – Chris Loonam Feb 09 '13 at 22:59

Getting string from NSManagedObject

3 Answers3