How to use NSPredicate with Multidimensional array (where the predicateFormat exists at valueForKeyPath)

Question

I have an array where the 'id' on which i want to filter the array exists at valueForKeyPath 'objectId' of each of its dictionaries. How to compare the predicates in ValueForKeyPath.

Currently.. this predicate

NSPredicate * objIdPredicate = [NSPredicate predicateWithFormat:@"objectId = %@",obj];
NSArray * oneOrder = [array filteredArrayUsingPredicate:objIdPredicate];

is considering key and values of the array elements, not the ones at their ValueForKeyPath=@"objectId"

UIBittu · Accepted Answer · 2015-04-01T14:57:08.513

2

Use "self"in your code to get the array element's valueForKeyPath

NSPredicate *objIdPredicate =[NSPredicate predicateWithFormat:@"(self.objectId = %@)",obj];

`

edited Apr 01 '15 at 14:57

answered Apr 01 '15 at 14:18

UIBittu

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2
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Didn't work. But i do think the solution is somewhere on the same lines – user3626615 Apr 01 '15 at 14:38
Try this ,just add Parentheses – UIBittu Apr 01 '15 at 14:58
did you try this [NSPredicate predicateWithFormat:@"(self.objectId = %@)",obj]; – UIBittu Apr 01 '15 at 15:03
you have dictionaries as the elements of your array right,this code works for me in a similar situation. – UIBittu Apr 01 '15 at 15:05
Thanks! .. it was at (self.order.objectId = %@). It was really helpful – user3626615 Apr 03 '15 at 19:26
In this case, you better use the method mentioned in this answer [link](http://stackoverflow.com/questions/13250575/objective-c-filter-array-of-nsdictionarys-and-nsdictionarys) – UIBittu Apr 06 '15 at 06:42

How to use NSPredicate with Multidimensional array (where the predicateFormat exists at valueForKeyPath)

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