See my other post in this thread why it's a Really Bad Idea to store the previous URL in the session. I promise you, you're only gonna cause yourself more pain.
chris > -----Original Message----- > From: John Sherlock [mailto:[EMAIL PROTECTED]] > Sent: Friday, September 20, 2002 4:09 AM > To: 'Struts Users Mailing List' > Subject: RE: Backtracking & Breadcrumbs > > > >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 > > -- > To unsubscribe, e-mail: > <mailto:[EMAIL PROTECTED]> > For additional commands, e-mail: > <mailto:[EMAIL PROTECTED]> > -- To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> For additional commands, e-mail: <mailto:[EMAIL PROTECTED]>
