Dear everyone,
after spending a lot of time with googling and multiple tries with
different approaches and also my questions to the struts-user-mailinglist
didn´t come to a solution, I would like to as you guys if there is a way
or not. So I´m sorry, if I use the developers-list for a stupid
user-question, but I don´t know any place else I might find a solution to
this problem:
My question is: Does the struts-framework provide a possibility to
forward back to the page you came from?
I can´t believe, that I´m the only one, who has this problem and I don´t
think there is no struts-conform solution. Let me give you the following
scenarios so that you know what I´m talking about.
- I wanna show a login-box on every page. If the user logs into the
webpage, the login-action executes and afterwards the user is redirected
to the page he has been before, but the userMenu is displayed instead the
login-box. If the authorization fails, he´ll be redirected to the same
page, showing im an error-message
- On top of every page is a possibility to change the language through
clicking on a button with a language-flag. After changing the locale, the
user will be redirected back to the page he came from, but using a
different language.
These are only 2 examples to get an idea, what I´m talking about. I tried
the following:
- using the referrer from the request. But this could not be a solution,
as it is not struts-conform and there are many possibilities, that the
referrer might not be availabe
- using the ActionMapping-Object´s input-Value. This doesn´t work
together with tiles, as the input-value is only part of the tile, but I
need the information of the "parent"-tile. Furtermore this doesn´t work
if the last action was a ForwardAction. Other attributes in the
mapping-object only refer to the next page, but not the current page.
- saving the last ActionForward in the session. This does only work, if
the user uses one browser-window and does never use the back-button,
because otherwise he´ll be redirected to an unexpected page.
- saving the tiles-definition in a hidden field on the jsp-page. This
would prevent the problem with the unexpected page, but does only work,
if a form will be submitted, that has a hidden-field with this value. Or
is there a way to put a parameter into the request without submitting a
form and without adding it to the URI.
- Adding a forward to every ActionMapping and extend the BaseAction to
forward to a specified forward. This won´t work, because of tiles as
well. Unfortunately you never know, which pages include this tile, so you
can´t use a static forward.
So I´d expect a solution somewhere near the RequestProcessor, but
especially with the ComposableRequestProcessor, this goes very deep into
the struts-architecture. I´m open to do this, but I don´t know the place
where to look at.
Is there a way I haven´t looked at or does anyone have an idea how to
solve this, as you probably know the struts-processes a lot better than I
do. Or is there a special reason, that this could not be implemented into
the struts-framework because of technically restrictions?
I´d greately appriciate any help to this topic. Sorry for asking this
question in the developers-list again, but I don´t know any other place
to ask for a solution, as I could not get any information to solve this
problem.
I hope, someone knows a solution to this or might share some ideas.
Many thanks
Thomas
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