I've switched over to INullAcceptingValidator but it's still not triggering the
validate method for some reason:
I'm now also explicitly setting setRequired(false);
New code:
studentList = new DropDownChoice("studentList", new
PropertyModel(orderManipulator.getDispatch(), "student"), students);
studentList.setRequired(false);
INullAcceptingValidator<DropDownChoice> validator =
new INullAcceptingValidator<DropDownChoice>()
{
public void
validate(IValidatable<DropDownChoice> validatable)
{
if ( validatable.getValue() == null )
{
logger.trace("Drop down value
null");
studentSet = false;
}
else
{
logger.trace("Drop down value
NOT null");
studentSet = true;
}
}
};
studentList.add(validator);
add(studentList);
attachUpdateBehavior(studentList);
>-----Original Message-----
>From: Igor Vaynberg [mailto:[email protected]]
>Sent: Wednesday, 15 September 2010 4:46 AM
>To: [email protected]
>Subject: Re: Validating a DropDownChoice when not in a form
>
>validators do not usually handle null values, that is handled by
>component's set/getrequired() property. if you want your validator to
>handle nulls let it implement INullAcceptingValidator
>
>-igor
>
>On Tue, Sep 14, 2010 at 11:22 AM, Chris Colman
><[email protected]> wrote:
>> Here's the code I use to set up the DropDownChoice and its validator:
>>
>> Inside the panel contructor:
>>
>> studentList = new DropDownChoice("studentList", new
>> PropertyModel(orderManipulator.getDispatch(), "student"), students);
>>
>> IValidator<DropDownChoice> validator =
>> new IValidator<DropDownChoice>()
>> {
>> public void
>> validate(IValidatable<DropDownChoice> validatable)
>> {
>> if ( validatable.getValue() ==
>> null )
>> {
>> logger.trace("Drop down
>> value null");
>> studentSet = false;
>> }
>> else
>> {
>> logger.trace("Drop down
>> value NOT null");
>> studentSet = true;
>>
>> }
>> }
>> };
>>
>> studentList.add(validator);
>> add(studentList);
>>
>> attachUpdateBehavior(studentList);
>>
>>
>> Later on when the user clicks a button the a panel validation method
>> calls
>>
>> studentList.validate();
>>
>> but I never see the trace messages appear.
>>
>> I am trying to detect whether the user has chosen an option in the Drop
>> down rather than just left it as "Choose one".
>>
>> Currently I have no choices available in the drop down the validator
>> should always show the message "Drop down value null" - theoretically
>> according to my understanding.
>>
>>
>>>-----Original Message-----
>>>From: Chris Colman [mailto:[email protected]]
>>>Sent: Wednesday, 15 September 2010 3:39 AM
>>>To: [email protected]
>>>Subject: RE: Validating a DropDownChoice when not in a form
>>>
>>>> validate() :)
>>>
>>>I've been trying that but for some reason it's not triggering the
>>>FormComponent's validator. I must have some broken logic in there
>>>somewhere.
>>>
>>>>
>>>> -igor
>>>>
>>>> On Tue, Sep 14, 2010 at 3:12 AM, Chris Colman
>>>> <[email protected]> wrote:
>>>> > Is it possible to force a validate of a DropDownChoice when it's
>> not
>>>in
>>>> > a form but just normal page/panel?
>>>> >
>>>> > If so what method(s) do we call?
>>>> >
>>>> >
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>>>>
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>>>
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>>
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>>
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