Yes, I am suggesting to write a custom taglib.
Cheers
Avlesh
On Sun, Jul 12, 2009 at 8:55 AM, Anthony Frasso <a...@cornell.edu> wrote:
> Thank you for the quick response Avlesh!
>
> Again, I'm somewhat new to Struts, so I'm not sure I understand your
> suggestion. Is there a taglib out there that handles this sort of
> thing? Or are you suggesting writing a custom taglib?
>
> Regards,
> Anthony Frasso
>
> On Sat, Jul 11, 2009 at 23:22, Avlesh Singh<avl...@gmail.com> wrote:
> > Never thought of using a taglib?
> >
> > Cheers
> > Avlesh
> >
> > On Sun, Jul 12, 2009 at 8:49 AM, Anthony Frasso <a...@cornell.edu>
> wrote:
> >
> >> Hello all, and thank you in advance.
> >>
> >> I'm relatively new to struts 2, as I started working with the
> >> framework about 6 months ago on a part time basis. I'm struggling to
> >> solve a problem that I would think would be fairly common: displaying
> >> a tree within a JSP.
> >>
> >> Essentially, I have an object (let's call it "Item") that looks
> >> something like the following:
> >>
> >> class Item {
> >>
> >> private String name;
> >> private Set<Item> children;
> >>
> >> // getters and setters
> >> }
> >>
> >> Working within a JSP page, I want to display the data within this Item
> >> as follows:
> >>
> >> <ul>
> >> <li>
> >> <s:property value="item.name"/>
> >> <s:iterator value="item.children" var="child">
> >> <ul>
> >> <li>
> >> <s:property value="child.name"/>
> >> <s:iterator value="child.children" var="grandchild">
> >> <ul>
> >> <li>
> >> <s:property value="grandchild.name"/>
> >> <s:iterator value="grandchild.child" var
> >> "greatgrandchild">
> >> ... and so on
> >> </s:iterator>
> >> </li>
> >> </ul>
> >> </s:iterator>
> >> </li>
> >> </ul>
> >> </s:iterator>
> >> </li>
> >> </ul>
> >>
> >> Ideally, I would be able to display this data using some sort of
> >> recursion, since there's really no way to tell how deep this tree is.
> >> If anyone knows of a good solution to this problem, I'd be very
> >> interested in hearing it.
> >>
> >> I did come up with what I thought might be a solution using the
> >> <s:include> tag. I came up with the following:
> >>
> >> In the main jsp page, I have:
> >>
> >> <ul>
> >> <li>
> >> <s:include value="inc/displayItem.jsp">
> >> <s:param name="item" value="item"/>
> >> </s:include>
> >> </li>
> >> </ul>
> >>
> >> In the included jsp page, I have:
> >>
> >> <s:property value="item.name"/>
> >> <s:iterator value="item.children" var="child">
> >> <ul>
> >> <li>
> >> <s:include value="inc/displayItem.jsp">
> >> <s:param name="item" value="child"/>
> >> </s:include>
> >> </li>
> >> </ul>
> >> </s:iterator>
> >>
> >> This does not work, of course, because a parameter from within an
> >> included jsp page can only be referenced like this: {$param.item}. In
> >> addition, I can't use that method to access the included parameter
> >> within any struts 2 tags (as far as I can tell).
> >>
> >> So again, I suppose my question is: is this an appropriate way of
> >> solving this problem? If so, how can I get this all to work? If not,
> >> what's a better way of going about this?
> >>
> >> Thanks again for all of your help,
> >> Anthony Frasso
> >> a...@cornell.edu
> >>
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> >>
> >>
> >
>
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