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

Matt Raible wrote:

> If you're using the same name as the default - you don't need to  
> specify the "repository" attribute.  That's only needed if you give 
> the  repository a different name.
>
> Matt


Ahhh! Works fine with that correction now :-). Thanks a lot!

Tom

>
> On Jun 25, 2004, at 8:50 AM, Thomas Bednarz wrote:
>
>>  Matt Raible wrote:
>>
>> 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
>>
>>
>>  Matt,
>>
>>  Thanks for your help. But it seems not really to work for me! :-(
>>  Hmmm, I did the following in my Struts-Action:
>>
>>           
>> session.getServletContext().setAttribute(MenuRepository.MENU_REPOSITORY 
>> _KEY, repository);
>>  and I also tried
>>          session.setAttribute(MenuRepository.MENU_REPOSITORY_KEY,  
>> repository);
>>
>> In the JSP I removed:
>>  <%
>>       pageContext.setAttribute("repository",   
>> (MenuRepository)application.getAttribute(MenuRepository.MENU_REPOSITORY 
>>  _KEY));
>>       %>
>>
>>  so there remains simply:
>>
>>     <menu:useMenuDisplayer name="CoolMenu4" repository="repository">
>>          <menu:displayMenu name="WNT"/>
>>          <menu:displayMenu name="AD"/>
>>          <menu:displayMenu name="Tools"/>
>>          <menu:displayMenu name="Info"/>
>>          <menu:displayMenu name="Home"/>
>>      </menu:useMenuDisplayer>   
>>
>>  The result is an exception:
>>
>>  2004-06-25 16:44:34 ApplicationDispatcher[/Echnaton]  
>> Servlet.service() for servlet jsp threw exception
>> javax.servlet.jsp.JspException: The menu repository could not be found.
>>      at  
>> net.sf.navigator.taglib.UseMenuDisplayerTag.doStartTag(UseMenuDisplayer 
>> Tag.java:148)
>>      at  
>> org.apache.jsp.Templates.EWCHeader_jsp._jspx_meth_menu_useMenuDisplayer 
>> _0(EWCHeader_jsp.java:181)
>>      at  
>> org.apache.jsp.Templates.EWCHeader_jsp._jspService(EWCHeader_jsp.java: 
>> 132)
>>      at  
>> org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:133)
>>      at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
>>      ......
>>
>>  Any idea what I am missing?
>>
>>  Tom
>>
>>
>>  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
>>  _______________________________________________
>>  struts-menu-user mailing list
>>  struts-menu-user-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
>> https://lists.sourceforge.net/lists/listinfo/struts-menu-user
>>
>>
>>
>>  
>
>
>
> -------------------------------------------------------
> 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
> _______________________________________________
> struts-menu-user mailing list
> struts-menu-user-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
> https://lists.sourceforge.net/lists/listinfo/struts-menu-user
>



-------------------------------------------------------
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