MORE help with logic:iterate

[Saeid Zoonematkermani <Sa...@gte.net>]

Hello all;

I am sorry to bring this up again but I have looked at the docs and the 
archives and I think I am following the instruction found in these but I 
still can't get the iterate tag to work correctly. So I wanted to post this 
question and see if I understand the methodology and hopefully figure out 
what is wrong. I using struts-1.0.2.

Let's say that I want to display a list of students. From the link (Display 
Students) on page 1, I go to DisplayStudentsAction which goes to the 
database and gets the list of students. I have a StudentBean with 2 
properties; name and id. The action gets the result set from the database, 
populates one bean at a time and adds them to a vector. At the end, I have 
a vector of StudentBeans. I put the vector in a session attribute called 
student_list and forward to page 2.

On page 2, I try to use the iterate tag to display a table of students and 
I have tried all variations of id, name, and property I can think of and 
some kind of error always shows up. Snippet of the JSP:

<table>
   <tr>
     <td>NAME</td>
     <td>ID</td>
   </tr>
   <logic:iterate id="student" name="student_list" scope="session">
   <tr>
     <td>
       <bean:write name="student" property="name" filter="true"/>
     </td>
     <td>
       <bean:write name="student" property="id" filter="true"/>
     </td>
   </tr>
   </logic:iterate>
</table>


Some of the things I have done which were unsuccessful:
- Added
<jsp:useBean id="student" scope="page" type="packageName.StudentBean"/>
or
<jsp:useBean id="student" scope="session" type="packageName.StudentBean"/>
to the top of the JSP and still no use...

The error I am getting most of the time is:
javax.servlet.ServletException: bean student not found within scope

Any help would be appreciated. I have read in the emails that nested tags 
might be the way to go but I need to stay with an officially released 
version of struts.

Thanks in advance,

- Saeid





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Re: MORE help with logic:iterate

[Arron Bates <ar...@pacific.net.au>]

In the nightly build, the nested tags will make easy work of this for 
you, simply swapping the tag header name a little to the following...
<nested:iterate property="myStudentListProperty">
<nested:write property="name" />
</nested:iterate>

(no, you don't have to mess around with the id's and all that. Quite easy)

To get it working on your 1.02 build.... gor here and get the 1.0 jar...
http://www.keyboardmonkey.com/struts

And it will be waiting for you in the next release of Struts when you 
upgrade (or you can just keep using the separate jar :)
The above link also has a tutorial if you get a little stuck about any 
of it.

Arron.

Saeid Zoonematkermani wrote:

> Hello all;
>
> I am sorry to bring this up again but I have looked at the docs and 
> the archives and I think I am following the instruction found in these 
> but I still can't get the iterate tag to work correctly. So I wanted 
> to post this question and see if I understand the methodology and 
> hopefully figure out what is wrong. I using struts-1.0.2.
>
> Let's say that I want to display a list of students. From the link 
> (Display Students) on page 1, I go to DisplayStudentsAction which goes 
> to the database and gets the list of students. I have a StudentBean 
> with 2 properties; name and id. The action gets the result set from 
> the database, populates one bean at a time and adds them to a vector. 
> At the end, I have a vector of StudentBeans. I put the vector in a 
> session attribute called student_list and forward to page 2.
>
> On page 2, I try to use the iterate tag to display a table of students 
> and I have tried all variations of id, name, and property I can think 
> of and some kind of error always shows up. Snippet of the JSP:
>
> <table>
> <tr>
> <td>NAME</td>
> <td>ID</td>
> </tr>
> <logic:iterate id="student" name="student_list" scope="session">
> <tr>
> <td>
> <bean:write name="student" property="name" filter="true"/>
> </td>
> <td>
> <bean:write name="student" property="id" filter="true"/>
> </td>
> </tr>
> </logic:iterate>
> </table>
>
>
> Some of the things I have done which were unsuccessful:
> - Added
> <jsp:useBean id="student" scope="page" type="packageName.StudentBean"/>
> or
> <jsp:useBean id="student" scope="session" 
> type="packageName.StudentBean"/>
> to the top of the JSP and still no use...
>
> The error I am getting most of the time is:
> javax.servlet.ServletException: bean student not found within scope
>
> Any help would be appreciated. I have read in the emails that nested 
> tags might be the way to go but I need to stay with an officially 
> released version of struts.
>
> Thanks in advance,
>
> - Saeid
>
>
>
>
>
> -- 
> To unsubscribe, e-mail: 
> <ma...@jakarta.apache.org>
> For additional commands, e-mail: 
> <ma...@jakarta.apache.org>
>
>



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