>I was kind of hoping for something at a "higher level",
>that once set up would just work. I guess I could override
>the Action class, but I'm not sure how to go about doing
>it that way.
Howard,
Here's a bit of a dirty hack... if you extend the Action class you could
possibly add the functionality to find out what page you have just come from
and set the name of that page in the session. That way the next page could
just recall the name of the previous page from the session. Because it is
done in the Action class it will always be done so you don't have to worry
about it.
In your custom Action class you can use
String strReferringPage = request.getHeader("Referer");
to get the URL of the page you have just come from. Then you can set the
referring page in the session using
session.setAttribute("previousPage", strReferringPage);
- not sure if 'request.getHeader("Referer")' will always achieve the desired
effect. If doesn't work you could have a hidden field on each form called
'referringPage' with the value being the name of that page. You could pull
this value out of the request in the Action class and set it in the session
in the same way as above. The drawback with this approach is that you have
to remember to put the hidden field on each page and in the case of pages
with no form and just a link, you will have to append
?referringPage=[nameOfPage] to all your hrefs. You could possibly eliminate
the need to do this yourself by writing a custom link tag and form tag
(extending the tags in the html-tags lib) that will do it for you but that
could be more trouble than it's worth.
Extending the Action class is quite simple - a good explanation on how to do
it can be found in chapter 5 (page 3) of Chuck Cavaness' book on Struts.
http://www.theserverside.com/resources/strutsreview.jsp .
Regards,
Jonny :)
John Sherlock
Software Engineer
Macalla Software Ltd
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