Dunno exactly what your requirements are, but you could use a history object in the
session for this sorta thing. I used a List for our "breadcrumb" links once before,
stored on the session. In my abstract superclass Action object, I would push the
current request URL onto the head of the List with each request. I had a fixed length
List, just removing the tail after it reached capacity so that it operated like a
queue. If you're always going to return to the previous page, this is an easy way to
deal with it. You would just do something like this in your subclasses:
MyListImpl list = (MyListImpl)request.getSession().getAttribute("MY_LIST_IMPL");
String last = list.getPreviousRequest(); // This will be the second-to-last object
added to the list
return new ActionForward(last);
If you're returning to a page 2 or 3 requests ago, things obviously get more
complicated. Note that you can do this without an abstract Action superclass if you
like, just stick a ServletFilter on the ActionServlet to manage your List instead.
hope this helps,
Joe
> -----Original Message-----
> From: Davide Bruzzone [mailto:[EMAIL PROTECTED]]
> Sent: Monday, February 10, 2003 2:53 PM
> To: 'Struts Users Mailing List'
> Subject: Suggestions/best practices for accessing the same page/view
> from different locations within the application/workflows...
>
>
> Greetings all...
>
> I just wanted to find out if anyone has any suggestions or
> best practices
> gained from experience with regard to accessing the same page
> from different
> locations within the application/workflows...
>
> Here's the scenario:
>
> 1) I have a page called MyPage.
> 2) Its possible to access MyPage directly from the main menu.
> When this
> happens, clicking the "Done" or "Save" or "Cancel" or
> whatever buttons on
> MyPage should return the user to the main menu.
> 3) Its also possible to access MyPage by going from the main menu to
> AnotherPage, then to MyPage (from AnotherPage). When this
> happens, clicking
> the "Done" or "Save" or "Cancel" or whatever buttons on
> MyPage should return
> the user to AnotherPage.
> 4) ...Ad nauseam...
>
> In short, where the buttons on a page take the user next can
> change, and
> depends on where they came from.
>
> I've taken a brief look at the Struts Workflow extensions
> that I read about
> on the list, but it wasn't immediately clear to me how they
> could be used to
> do what I just described. Should I be looking harder?
>
> Cheers...
>
> Dave Bruzzone
>
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