Martin Ravell wrote:
> So you call validate from within the Action?
>
Yes.
> Do you then have to forward back to the original page if you have errors?
>
Yes.
One nice thing about doing validation "manually" (see below) is that I
can add further validation that would be irritating to do in
validation.xml (say by writing a custom validator) or validation that
requires trips to the DB, etc. I really only use validation.xml for the
easy stuff, mostly just the stuff that comes with it, with an occasional
custom validator.
> Have you tried having validate="true" in your action?
>
Yes, but that can cause issues, like if your input form needs setup
before display, etc.
> Could I take a look at an example out of one of your Actions?
>
No, but I've appended some pseudo-code, although it might not help.
> Thanks for showing me that the input can point to a tiles definition. I've
> been trying this without luck. Perhaps I have something in my configuration
> somewhere which is not setup 100% correctly.
>
I'm not sure where it could get messed up; it's pretty straight-forward.
So, here's (very) psuedo-code for one version of an Action class
hierarchy. Basically all I'd do in my subclasses is implement something
in executePost. Currently I'm not even doing much there, it's just
marshalling stuff from the form into a bean and calling stuff on the
business and ORM side of things. There was a pretty good thread some
time ago with Frank Zammetti regarding ways to never have to change your
code inside of your action classes through various means that is
probably worth looking up if you're interested in such things.
========== BASE ACTION CLASS ==========
// Call subclass or default impls
public ActionForward execute(...) {
if (!prepForAction()) handleError();
return executeGet() if isGetRequest();
return getInputForward() if validationErrors();
return executePost();
}
// Default impl goes to input page
public executeGet() {
return getInputForward();
}
// Default impl calls form's validation method and does the right thing
public validationErrors() {
errs = form.validate();
if (haveErrs) saveErrors();
}
========== SUBCLASS EXAMPLE ==========
public prepForAction() {
request.setAttribute("listOfSomething", getListOfSomething());
}
public executePost() {
// Do stuff relating to form post
}
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