In a page, I loop over a list of objects. In the page's template I specify
an index parameter to track the loop like this:
<div t:type="loop" t:source="myList" t:value="iterationElement" t:index="
*elementIndex*">
<t:form t:id="formId" t:context="*elementIndex*">
<t:submit t:id="buttonId" value="Delete element" t:context="[*elementIndex*]"
t:defer="false" />
In the page there is a property with the name "*elementIndex*".
@Property
> private int *elementIndex*;
The event handler for the submit button click is
@OnEvent(component = "buttonId", value = EventConstants.SELECTED)
> private void deleteElement(Object[] context) {
> int elementIndex = (Integer) context[0];
> // TODO Delete element
> System.out.println("Deleting element with index: " + elementIndex);
> }
I also tried having this event handler method with an integer parameter only
@OnEvent(component = "buttonId", value = EventConstants.SELECTED)
> private void deleteElement(int elementIndex) {
> // TODO Delete element
> System.out.println("Deleting element with index: " + elementIndex);
> }
The thing is that I always get 0 !
My questions are:
1. How track the index of the iteration loop iteration and pass this index
as a context to a submit button ?
2. Since I declared a form inside the loop, if a form is submitted, how can
I use the loop's index to identify which element's form was submitted ?
I think the context parameter is poorly documented. Also the different
parameters for a single component are rarely given an example for. For
instance, the Loop component documentation page
<http://tapestry.apache.org/5.3/apidocs/org/apache/tapestry5/corelib/components/Loop.html>
doesn't give an example for the index parameter.
Thank you
*---------------------*
*Muhammad Gelbana*
http://www.linkedin.com/in/mgelbana
