On Feb 22, 2008, at 9:55 AM, mmalc crawford wrote:
On Feb 22, 2008, at 1:34 AM, Adam P Jenkins wrote:
On Feb 22, 2008, at 12:03 AM, Chris Schmitt wrote:
I am sure this is easy and I am just missing something, but I want
to bind my integer attribute to an NSTextField. The data is
displayed correctly, but after I update the value in the text
field and try to save the changes back to my model. I get an
error saying that the update failed trying to set the integer
value to a string value.
I have been searching for a while and I think I need to use a
number formatter, but it would seem that there is an easier way to
do this.
On a side note, what is the best way to make sure only numbers are
typed into the text field?
Using a number formatter is the easiest way to accomplish both of
these tasks.
You're assuming that by "update the value in the text field", the
original poster meant that they were doing it programmatically.
However the post doesn't say that, so I assumed they meant they
updated the value by typing into it, in which case using a
NumberFormatter is a good solution to both prevent the user from
entering non-numeric input, and to convert between text and the
correct bound-to property type.
You're correct in pointing out that updating the text field's value
programmatically is the wrong way to go about things. However that
causes a different problem than what the original poster was describing.
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