Hi Dave:
What version of Struts are you using?
A long time ago, i met the similar problem in Struts1.
I thought the parameter named "cellCosts[0][4].quota"
should be translated into java code likes:
action.getCellCosts().get(0).get(4).setQuota(value);
And the method [get] throws a IndexOutOfBoundsException because there
were not element in the list yet.
My solution was:
1,Create a new List class named [AutoList], which expend from class [ArrayList].
2,Override the method [get] of [AutoList], create instances of element
and insert them into the list before the old [get] method is executed,
so we the list can be populated automatically and the method [get]
will not throw IndexOutOfBoundsException.
3,In Action/Form class, use the new AutoList instead of ArrayList.
In Struts2, I am not sure how OGNL process this case.
2010/10/14 Dave Evans <dsevan...@gmail.com>:
> Hello,
>
> I've got an action with this property:
>
> private List<List<CellCost>> cellCosts;
>
> public void setCellCosts(List<List<CellCost>> l) {
> this.cellCosts = l;
> }
>
> public List<List<CellCost>> getCellCosts() {
> return this.cellCosts;
> }
>
> The outer list is a list of locations, each of which has a list of
> cellCosts. These are dynamically sized.
>
> The jsp has this in two nested jstl forEach loops:
> <input
> name="cellCosts[${locationStatus.index}][${cellCostStatus.index}].quota"
> type="text" value="${cellCost.quota}" />
>
> which renders to (as an example):
> <input name="cellCosts[0][4].quota" type="text" value="10" />
>
> Ognl doesn't seem to be populating the cellCosts list.
> Any suggestions?
>
> Thanks,
>
> Dave
> Dave
>
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