Re: NSPredicateEditor

FROM : Chris
DATE : Wed Jun 25 16:19:58 2008

Cool.

Now I notice that if you manually plug in a complex predicate like "a 
= b or c = d and e = f", that it is capable of displaying it correctly.

Do you know if there is any way to allow the user to create more 
complex expressions? By default it only seems to allow either AND or 
OR, but not both from the user, even though the machinery seems to 
know how to display things more complex.



On 25/06/2008, at 11:57 PM, Jim Turner wrote:

> On Wed, Jun 25, 2008 at 1:08 AM, Chris <<email_removed>> wrote:

>> Let's say I create a NSPredicateEditor and it looks like this:
>>
>> --------------------
>> [All] of the following are true:
>> --------------------
>> [Name] equals [        ]
>> -------------------
>>
>> So the user enters say "Fred" and the predicate returned is "Name 
>> == Fred".
>>
>> Later on, I reload that predicate into the NSPredicateEditor and it 
>> looks
>> like this:
>>
>> --------------------
>> [Name] equals [ Fred ]
>> -------------------
>>
>> But now there is no option to change it to say:
>>
>> [Some] of the following are true:
>>
>> because that line isn't shown.
>>
>> How do I make that line reappear the next time?

>
> By default, the NSPredicateEditor object in IB creates a compound
> predicate.  Wrap your "Name == Fred" predicate in a compound predicate
> before reloading it in the editor and the Any/All/None row should
> return.
>
> --
> Jim
> http://nukethemfromorbit.com