Form Data removed on binding exception

Hi All,

I have a form that is a mix of persistent data (command object) and presentation data which I am just spitting out as text to the form. When I hit a binding exception the form data is preserved but the presentation data is lost...unless I set sessionForm to true. Is setting the session form to true my best option for that?

That's tue. Only form data is preserved. If you need to add additional data, and you are using a SimpleFormController, the best place is showForm method. This method executes when there is a GET method, or when there is a Validation o r binding error.

The method to override is the one with 4 parameters:

Code:

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protected  ModelAndView showForm(HttpServletRequest request, HttpServletResponse response, BindException errors, Map controlModel)

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Thanks, so is the idea to query the extra data I need and add it to the control data in this method?

Simply overriding referenceData should be enough since it's called from the default showForm implementation anyway.

reference data.....of course thats it. thanks!