Use JSTL forEach loop's varStatus as an ID
JavaJspJstlElJava Problem Overview
I want to use the count from the JSTL forEach loop, but my code doesnt seem to work.
<c:forEach items="${loopableObject}" var="theObject" varStatus="theCount">
<div id="divIDNo${theCount}">
</div>
</c:forEach>
produces
<div id="divIDNojavax.servlet.jsp.jstl.core.LoopTagSupport$1Status@5570e2" >
Java Solutions
Solution 1 - Java
The variable set by varStatus is a LoopTagStatus object, not an int. Use:
<div id="divIDNo${theCount.index}">
To clarify:
${theCount.index}starts counting at0unless you've set thebeginattribute${theCount.count}starts counting at1
Solution 2 - Java
you'd use any of these:
JSTL c:forEach varStatus properties
Property Getter Description
-
current getCurrent() The item (from the collection) for the current round of iteration.
-
index getIndex() The zero-based index for the current round of iteration.
-
count getCount() The one-based count for the current round of iteration
-
first isFirst() Flag indicating whether the current round is the first pass through the iteration
-
last isLast() Flag indicating whether the current round is the last pass through the iteration
-
begin getBegin() The value of the begin attribute
-
end getEnd() The value of the end attribute
-
step getStep() The value of the step attribute
Solution 3 - Java
You can try this. similar result
<c:forEach items="${loopableObject}" var="theObject" varStatus="theCount">
<div id="divIDNo${theCount.count}"></div>
</c:forEach>
Solution 4 - Java
Its really helped me to dynamically generate ids of showDetailItem for the below code.
<af:forEach id="fe1" items="#{viewScope.bean.tranTypeList}" var="ttf" varStatus="ttfVs" >
<af:showDetailItem id ="divIDNo${ttfVs.count}" text="#{ttf.trandef}"......>
if you execute this line <af:outputText value="#{ttfVs}"/> prints the below:
>{index=3, count=4, last=false, first=false, end=8, step=1, begin=0}