Bindings and empty text field nil assigments
Bindings and empty text field nil assigments
- Subject: Bindings and empty text field nil assigments
- From: Markus Spoettl <email@hidden>
- Date: Wed, 27 Aug 2008 21:00:23 -0700
Hello List,
I have objects storing simple scalar values (NSInteger, double).
Those values/properties are bound to text fields. Now, if the user
clears the text field and the underlying property gets updated, it's
not simply setting the value to 0 or its equivalent, instead
- (void)setNilValueForKey:(NSString *)key
is invoked. Failing to implement it causes an exception when exiting
out of a cleared text field bound to a scalar value.
I was wondering if there was a more direct and less glue-code
involving way of doing this. I don't want to go and store NSNumbers
instead of scalar values, which I imagine would have the advantage of
accepting nil values inherently.
Can I tell the bindings system to directly set scalars to 0 in case of
nil values?
Regards
Markus
--
__________________________________________
Markus Spoettl
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