On Sep 7, 2009, at 6:41 AM, Jacek Kałucki wrote:
>> If you mean that a value must meet any other criteria, then that's a
>> business rule.
>
> No, I have dropdown list and related radio list that depend each
> other,
> none of them is dependent any element of database, except the
> presentation layer.
> I think, that form mediation in validating business objects is very
> god
> move, but there is not enough flexibility.
I think what you are calling 'validation' is instead more like
updating the form's state. Would something like this work?
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[form code]
dropdown = dabo.ui.dDropdownList(self, ..., RegID="myDD",
OnValueChanged=self.evalState)
radio = dabo.ui.dRadioList(self, RegID="myRadio")
...
def evalState(self, evt):
self.myRadio.Enabled = (self.myDD.Value == "some condition")
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I would suggest disabling the control is preferable to having it
remain normal-looking, but not allow the user to change the value
programmatically. If it's disabled, the user knows it can't be
changed; otherwise, they'll be frustrated clicking on things while
your program prevents a change.
-- Ed Leafe
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