Putting data from a core database in an array

Question

I have a core data database and I would like to show the data into a tableview. I have been searching on the web how to do that but I never can find it.

NSEntityDescription *entitydesc = [NSEntityDescription entityForName:@"Host" inManagedObjectContext;context];
NSFetchRequest *request = [[NSFetchRequest alloc]init];
[request setEntity:entitydesc];

NSPredicate *predicate = [NSPredicate predicateWithFormat:@"I DON'T KNOW WHAT TO PUT HERE"];
[request setPredicate:predicate];

But I have no idea what I have to write in the predicateWithFormat so I can select all the data of my database table.

And when I have all the data of my database table how can I put them in an array so i can add the array to a tableview?

Thanks :)

score 1 · Accepted Answer · answered Oct 23 '12 at 15:21

1

from the NSFetchRequest docs:

If you don’t specify a predicate, then all instances of the specified entity are selected

answered Oct 23 '12 at 15:21

wattson12

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Ok thanks :) that works :) but It will only add the last data so in my table view I have just 1 row and in my database are 3 rows – Robbert Wolfs Oct 23 '12 at 15:50
that will fetch all objects of that entity type, so if it only returns 1 item, you only have 1 item of that entity in core data – wattson12 Oct 23 '12 at 16:01
but i want the data in my entity – Robbert Wolfs Oct 23 '12 at 16:07
I have it :) I used an NSArray but I had to use an NSMutableArray :) Thanks for your help – Robbert Wolfs Oct 23 '12 at 16:46

Putting data from a core database in an array

1 Answers1