Re: creating a for loop structure for multibox

[Frank W. Zammetti]

If I understand correctly, you will get from an Action an upper limit to 
the number of checkboxes to display, and you want each checkbox to be 
named 'valueX' where X is the value of the for loop.  Some people will 
argue, but I don't see where a taglib is really required here...

<%
  // Assume you got a reference to your action form in af,
  // and that is has a getUpperLimit() method...
  int ul = af.getUpperLimit();
  for (int i = 0; i < ul; i++) {
%>
    <input type="checkbox" name="value<%=i%>">
<%
  }
%>
Not much more than that required.  To make them retain state, you'll 
have to provide some method to determine when a given checkbox is 
checled, and add a checked attribte accordingly, something like:

    <input type="checkbox" name="value<%=i%>" 
<%=af.getIsChecked(i)=true?"checked":"">

That'll do the trick, assuming getIsChecked() accepts an index value and 
returns a boolean stating whether that particular checkbox is checked or 
not.

I have a personal distaste for taglibs in most cases, I know many people 
disagree, but I figured you might as well know all your options, then 
you can choose whickever you prefer from an informed position.

--
Frank W. Zammetti
Founder and Chief Software Architect
Omnytex Technologies
http://www.omnytex.com
Jim Barrows wrote:

-----Original Message-----
From: Kedar Deshpande [mailto:[EMAIL PROTECTED]
Sent: Friday, December 17, 2004 1:52 PM
To: Struts Users Mailing List
Subject: Re: creating a for loop structure for multibox
i am currently using struts tags and cant find a proper solution. it 
would be better to have a simple struts code, otherwise i'll 
try to use 
the JSTL.

Then you want the logic:iterate tag.

thank you
Kedar
Jim Barrows wrote:



-----Original Message-----
From: Kedar Deshpande [mailto:[EMAIL PROTECTED]
Sent: Friday, December 17, 2004 1:21 PM
To: [EMAIL PROTECTED]
Subject: creating a for loop structure for multibox
Could someone please post an example of using a 'for loop' 
structure in 
  

Using JSTL, or Struts tag libs?


a JSP. i need to get the loop limit from the action and then assign 
individual 'value' values for a column of checkboxes so that i know 
which ones were selected and so that they can be set again 
when viewing 
the page.

thanks
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