Predicate in IB
Predicate in IB
- Subject: Predicate in IB
- From: Micha Fuhrmann <email@hidden>
- Date: Fri, 27 Apr 2007 12:50:42 +0200
Hi there,
I can't get the predicate working in IB. The predicate in the Class
is working fine since I'm creating an filtered test array within the
class, but in IB it doesn't do as expected. I've done a tiny project
covering the issue, I would be grateful if someone could take a look.
All the doc I've found is a couple of lines in the Predicate
Programming Guide:
"You can set a predicate for an array controller to filter the
content array. You can set the predicate in
code (using setFilterPredicate:). You can also bind the array
controller's filterPredicate
binding to a method that returns an NSPredicate object. The object
that implements the method may
be the File's Owner or another controller object. If you change the
predicate, remember that you must
do so in a key-value observing compliant way (see Key-Value Observing
Programming Guide) so that
the array controller updates itself accordingly.
You can also bind the predicate binding of an NSSearchField object to
the filterPredicate of an
array controller. A search field's predicate binding is a multivalue
binding, described in Binding
Types."
I haven't found any examples either, not really clear, to me at least.
As a side I'm finding working with Bindings in IB difficult. When
residing within xCode/Classes, the contours are clear, mixing IB's
Bindings and it gets blurry.
May be it's just me... anyway the project can be downloaded at
http://homepage.mac.com/michaf/FileSharing64.html
It must be a little tweak I've missed, again, would be grateful for
someone shedding light.
Regards,
Micha
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