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Posted to user@struts.apache.org by Michael Thompson <Mi...@sun.com> on 2003/09/19 18:06:43 UTC
Action/Form Design Q
I've hit a stumbling block and I'm not quite sure how to work around
it. I've written struts apps in the past and I've taken the approach of
putting everything in the ActionForm so that the jsp has a one stop shop
for all it's display needs. So where I've hit an issue is when say I
have jsp A that is rendered with form A. When user submits data to
action A, the ActionForm pushed to execute is form A. What happens when
I need to forward from action A to jsp B which is rendered with form B?
I need to populate an ActionForm B to send to jsp B, but I don't have
one. Is it "normal" to create a form of a different type in your
Action? So essentially the code would look something like:
public void execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws Exception
{
FormA inputForm = (FormA)form;
Result result = doSomeCrunchingOnDataSubmittedViaFormA(inputForm);
FormB outputForm = getInstanceOfFormB(mapping, request); //this
would stash in request/session also
populateFormBWithResults(outputForm, result);
return mapping.findForward("success");
}
getInstanceOfFormB is a little hazy, but I did notice a method in
RequestUtils that might help. Seems like this might be breaking some
struts abstractions by knowing what form to create etc.
Is this the correct way to approach this or should I think about a
redesign of my forms and actions? Thanks in advance!
--m
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Re: Action/Form Design Q
Posted by Adam Hardy <ah...@cyberspaceroad.com>.
What you can do is make your action forward a redirect in the mapping,
so that the browser is told to make a new request to that mapping. Then
you can specify the form in your new mapping and struts takes care of it
all.
You just have to watch out for request parameters - that info will get
lost unless you put it in a cookie or a session etc.
Adam
On 09/19/2003 06:06 PM Michael Thompson wrote:
> I've hit a stumbling block and I'm not quite sure how to work around
> it. I've written struts apps in the past and I've taken the approach of
> putting everything in the ActionForm so that the jsp has a one stop shop
> for all it's display needs. So where I've hit an issue is when say I
> have jsp A that is rendered with form A. When user submits data to
> action A, the ActionForm pushed to execute is form A. What happens when
> I need to forward from action A to jsp B which is rendered with form B?
> I need to populate an ActionForm B to send to jsp B, but I don't have
> one. Is it "normal" to create a form of a different type in your
> Action? So essentially the code would look something like:
>
> public void execute(ActionMapping mapping, ActionForm form,
> HttpServletRequest request, HttpServletResponse response)
> throws Exception
> {
> FormA inputForm = (FormA)form;
> Result result = doSomeCrunchingOnDataSubmittedViaFormA(inputForm);
> FormB outputForm = getInstanceOfFormB(mapping, request); //this
> would stash in request/session also
> populateFormBWithResults(outputForm, result);
>
> return mapping.findForward("success");
> }
>
> getInstanceOfFormB is a little hazy, but I did notice a method in
> RequestUtils that might help. Seems like this might be breaking some
> struts abstractions by knowing what form to create etc.
>
> Is this the correct way to approach this or should I think about a
> redesign of my forms and actions? Thanks in advance!
> --m
>
>
>
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> To unsubscribe, e-mail: struts-user-unsubscribe@jakarta.apache.org
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>
>
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