Użytkownik John Fabiani napisał:
> Hi,
>
> I'm trying to create a wiki entry on how to dynamicly change the Choices and
> Keys values of a dropdown.
>
> I created a form that contains a textbox, a subclassed dropdownlist, and a
> button. I'd post the code but currently I'm using postgres for the data to
> prove everything works. So I doubt it would be much help.
>
> In this case I'm using the value in a textbox to change the Choices of a
> dropdown list. I bind the InteractiveChange of the textbox to a method that
> calls the dropdown update(). This works very well when I make changes to the
> textbox value the dropdown.update() changes the Choices, and Keys.
>
> IOWs my subclass of dDropdownList calls a method that uses the value in the
> textbox to get and set the Choices, and Keys.
>
> My issue appears if I attempt to use the Form.cancel() to revert back to the
> old value of the textbox. I use a button to call the cancel routine. It
> appears the dropdown.update() is called before the old value of the textbox is
> established in the control.
>
> I've tried several ways to force the correct value into the textbox prior to
> calling my dropdown.update() method without success.
>
>
Hi.
Try this patch:
--- dDataControlMixin.py (revision 6195)
+++ dDataControlMixin.py (working copy)
@@ -81,7 +81,7 @@
nm = self._name
dabo.log.error(_("Could not set value of %(nm)s to
%(val)s. Error message: %(e)s")
% locals())
- self.flushValue()
+ self._afterValueChanged()
else:
self._properties["Value"] = val
--
Regards
Jacek Kałucki
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