c:when test = .....problem

[sudhakar Tadepalli]

Can some one modify this logic ?. I am getting error.

<logic:iterate indexId="i" id="collection" name="dataForm" property="collection">
<c:choose>
<c:when test ="${[i.intValue()%2 == 0]}">
<tr>
</c:when>
<c therwise>
<tr bgcolor=#C0C0C0>
</c therwise>
</c:choose>

[Kerry Wilson]

Could you post the stack trace?

[sudhakar Tadepalli]

Here is the error displayed in JSP.

Validation error messages from tag library c
tag = 'when' / attribute = 'test': An error occurred while parsing custom action attribute "test" with value "${[[i.intValue()%2] == 0]}": Encountered "[", expected one of [, , , "true", "false", "null", "(", "-", "not", "!", "empty", ]'

I hope u understood what I am doing. Trying to display two colors in a table based on the "i%2 ==0" value

[Cendy Nguvy]

This following doesn't work ?

<c:when test ="${i.intValue()%2 == 0}">

[sudhakar Tadepalli]

Cindy , That does not work either. But I am able to print using c ut tag for testing purpose.

"i" is IndexId of an logic iterator. Please see above code.

[Marc Peabody]

The problem is that the logic tag is saving "i" as a variable and JSTL only looks in the scopes for variables.

Using html-el:logic might work. Or there might be a bean tag (define?) that could place it into a scope.

By the way, this might be simpler with a simple if instead of choose/when/otherwise:
<tr
<c:if test='???'>bgcolor="#C0C0C0"</c:if>
>

[sudhakar Tadepalli]

Some one suggested me to use c:if, I just thought to try, But I gave up, Don't want to make life so complicated

This works fine for me. Thank you all anyway.

<logic:iterate indexId="i" id="collection" name="dataForm" property="collection">
<%if (i.intValue()%2 == 0)
{%>
<tr>
<%}else{%>
<tr bgcolor=#C0C0C0>
<%}%>

[Cendy Nguvy]

As Mark says, you can use bean efine tag to place "i" into a scope.

<logic:iterate indexId="i" id="collection" name="dataForm" property="collection">
    <bean :mrgreen: efine id="ind" name="collection" property="i"/>
    <c:if test ="${ind.intValue()%2 == 0}">
...

[Marc Peabody]

Originally posted by Cendy Nguvy:
As Mark says, you can use bean efine tag to place "i" into a scope.

Apparently my other casual suggestion was too important to give any attention to the actual solution. :roll:

[sudhakar Tadepalli]

Marc and Cindy, I tried again but no luck

<logic:iterate indexId="i" id="collection" name="templateForm" property="collection">
<bean efine id="ind" name="collection" property="i"/>
<c:if test ="${ind.intValue()%2 == 0}">
<tr>
</c:if>
<tr bgcolor=#C0C0C0>

Error on JSP :

Validation error messages from tag library c
tag = 'if' / attribute = 'test': An error occurred while parsing custom action attribute "test" with value "${ind.intValue()%2 == 0}": Encountered "(", expected one of ["}", ".", ">", "gt", "<", "lt", "==", "eq", "<=", "le", ">=", "ge", "!=", "ne", "[", "+", "-", "*", "/", "div", "%", "mod", "and", "&&", "or", "||"]'

Thanks
Sudhakar

[Marc Peabody]

<logic:iterate indexId="i" id="collection" name="templateForm" property="collection">
<bean:define id="ind" name="i"/>
<c:if test="${ind%2 == 0}">

[Marc Peabody]

Hmm, I just tried this without the bean efine and it also worked.

<logic:iterate indexId="i" id="collection" name="templateForm" property="collection">
<c:if test="${i%2 == 0}">

[sudhakar Tadepalli]

Yahooooo...Thanks Marck it works now. It works without bean defined alo. I think the problem with intValue() method.

Thanks alot...another thread got fixed

Sudhakar