Disable button event handing

Question

Hi All,
I have a employee number Lov on page and when the user select employee number from the LOV I have to check whether this Employee is already exists or not.
I am storing the data in some custom table.
If the data of selected employee is already there in custom table then I want to disable the button.
Step I did..
I have capture the Lov event and check that whether the employee exists in table or not. I am getting stuck that how in Processs from request I can change web bean property.
Regards
Ajay
Edited by: Ajay Sharma on May 6, 2009 4:21 AM

Answer 1

You can use SPEL expression to achieve this. In this case you need to do extension of VO.
or
you can redirect the page to itself in processFormRequest(). so that processRequest() will be called and you can disable the button using standard code.
if (pageContext.isLovEvent())
// Form was submitted because the user selected
// a value from the LOV modal window,
// or because the user tabbed out of the LOV input.
// Find out which LOV input triggered the event.
String lovInputSourceId = pageContext.getLovInputSourceId();
// At this point, all the data is available in the base VO, just as in
// regular PPR events. Invoke an AM method to update the application
// properties VO.
// if ("myLovInput".equals(lovInputSourceId))
// redirect here
setForwardURLToCurrentPage(HashMap params, boolean retainAM, String addBreadCrumb, byte messagingLevel) ;
--Prasanna