Re: Newbee - How to create a dynamic menu in a Struts Action?

Yes, it looks in all contexts - so if you put it in any of them it  
should work.  The one from reading menu-config.xml gets put in  
application, allowing you to customize at the different levels/scopes.

Matt

On Jun 25, 2004, at 8:05 AM, Thomas Bednarz wrote:

>  Matt Raible wrote:
>
> I'd put it into the request.
>  
> request.setAttribute("repository", repository);
>  
> Note that you'll have to do this every time you want to view the page  
> since the repository will disappear once the page is done loading.   
> You could also put it into the user's session and then it would stay  
> there for duration of their session - however long you have that set  
> to.
>  
> Matt
>
>  Matt,
>
>  I found a different, maybe less elegant solution to that:
>
>  In the Struts-Action I put the stuf f in the application context:
>
>           
> session.getServletContext().setAttribute(MenuRepository.MENU_REPOSITORY 
> _KEY, repository);
>
>  In the Jsp I take it from the application context:
>
>      <%
>      pageContext.setAttribute("repository",  
> (MenuRepository)application.getAttribute(MenuRepository.MENU_REPOSITORY 
> _KEY));
>      %>
>  At least this works fine but may not be efficient.
>
>  What I do not understand: (Just for a better understanding how it  
> works behind the scenes)
>
>      <menu:useMenuDisplayer name="CoolMenu4" repository="repository">
>     .........
>      </menu:useMenuDisplayer>   
>
>  Where does it look for the "repository" object? Does it lookup in all  
> contexts (Page, Request, Session, Application)?
>
>  Cheers
>
>  Tom
>
> -----Original Message-----
> From: struts-menu-user-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org  
> [mailto:struts-menu-user-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org] On Behalf Of  
> Thomas Bednarz
> Sent: Friday, June 25, 2004 2:22 AM
> To: Struts menu user list
> Subject: [struts-menu] Newbee - How to create a dynamic menu in a  
> Struts Action?
>
>
>  Hi,
>
>  I usually work with Velocity and not with JSP. However I decided to  
> build my menu with JSP and mix Velocity and JSP. The problem is, that  
> I have no experience with JSP.
>
>  To create a dynamic menu I looked at the database sample. I have the  
> following question:
>
> How can I put my menu repository from a Struts Action into a JSP Page  
> Context ?????
>
>  I have a Struts Action that builds the menu as follows:
>
>      public ActionForward perform(ActionMapping mapping, ActionForm  
> form,
>                                   HttpServletRequest request,  
> HttpServletResponse response)
>      throws IOException, ServletException
>      {
>          ActionForward af = super.perform(mapping, form, request,  
> response);
>          if (af != null)
>              return af;
>          ........
>          buildMenu(session);
>          .....
>          return (new ActionForward("/Templates/Test.jsp"));
>      }
>     
>      protected void buildMenu(HttpSession session)
>      {
>          MenuRepository repository = new MenuRepository();
>          MenuRepository defaultRepository = (MenuRepository)
>           
> session.getServletContext().getAttribute(MenuRepository.MENU_REPOSITORY 
> _KEY);
>          repository.setDisplayers(defaultRepository.getDisplayers());
>         
>          MenuComponent mc = new MenuComponent();
>          mc.setName("Test Menu 1");
>          String title = "Menu Title";
>          mc.setTitle(title);
>          //mc.setLocation("location");
>          repository.addMenu(mc);
>         
>         // WHERE TO PUT THE REPOSITORY OBJECT (IN WHICH CONTEXT??)
>         // I should do something like  
> JSPPageContext.setAttribute("reporsitory", repository);
>     }
>
>  In the Test.jsp I would like do do something like:
>
>      <menu:useMenuDisplayer name="ListMenu" repository="repository">
>          <menu:displayMenu name="Test_Menu_1"/>
>      </menu:useMenuDisplayer>   
>
>  Many thanks for your help!
>
>  Tom.
>
>
>
>  


-------------------------------------------------------
This SF.Net email sponsored by Black Hat Briefings & Training.
Attend Black Hat Briefings & Training, Las Vegas July 24-29 - 
digital self defense, top technical experts, no vendor pitches, 
unmatched networking opportunities. Visit www.blackhat.com