DateCell and EditTextCell store user entered data in a view data object, so
the pending user entered value can be rendered even if the table is
refreshed.  To clear it, do the following:
myDateCell.clearViewData(keyOfAppointment);

If you specified a key provider to CellTable, the key is the key provided by
it.  If you do not use a key provider, the key is the Appointment itself.

Thanks,
John LaBanca
[email protected]


On Sat, Dec 4, 2010 at 4:37 PM, bradr <[email protected]> wrote:

> I am using the CellTable, with the EditTextCell and the
> DatePickerCell.
>
> I'm trying to do some basic validation to control the users input. For
> example
> 1) I'd like to prevent the user from inputting a null or empty string
> in the EditTextCell
> 2) I have a Start and End date. And I want to make sure the user
> doesn't set the End date before the Start date
>
>                finishColumn.setFieldUpdater(new FieldUpdater<Appointment,
> Date>() {
>                        public void update(int index, Appointment object,
> Date value) {
>
> if(object.getFinish().before(getStart()) {
>                                    Window.alert("The Appointment can
> not finish before the Start date");
>                                } else {
>                                    object.setFinish(value);
>                                }
>                        }
>                });
>
> I'm able to prevent the incorrect finish date from being set, however,
> the grid still displays the incorrect value. The object and grid are,
> therefore, out of sync.
>
> What is the recommended way to data validation within in editable
> CellTable?
>
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