Michael Jouravlev wrote:
On 2/14/06, Rick Reumann <[EMAIL PROTECTED]> wrote:
In the action just look for some param like "fromPage" and key off of
that for your return. (Of course a drawback is you'll need to remember
to set this var on the pages that need it - of course there are ways you
could simplify that even, if really necessary).
Using session is much simpler ;-)
This is one of those times I would agree :)
My suggestion would be to have a base Action in which you set a session
attribute to tell which page was server. Actually, you would store two,
the current and the previous.
Here's my concern... let's say you have page A and page B, from which
you can go to page C. From page C you want to return to page A or B as
appropriate. You could do this a number of ways, but what if you are
using the common paradigm of a setup Action for a screen, and then a
collection of Actions which really can be though of as event handlers
for a given screen (could be a DispatchAction just as well, that
wouldn't change anything).
If you want to go back to page A from page C, and you got to page C by
maybe submitting a form, then the problem is that you got to page C via
an event handler in essence. But, when you return to page A, you really
want the setup Action to fire again. So, just recording the last
request isn't sufficient.
If you have a base Action that sets that session attribute, then you can
have only your setup Actions extend that base class. Then, when you
want to return to the last page from any other page, you look up that
value and you now know which SETUP Action you need to call. More
precisely, you would look at the second value in session (think of it as
a stack) because every time a setup Action is called you really need to
push a value on the stack so that the second value on the stack is truly
the last page, not the current pages' setup Action.
Does that make any sense to anyone but me?? :)
Frank
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