Neil,
A good approach for this is always having a set up action where you
load all data to be used in dropdown boxes.
You can do this with plain Actions and, what i use the most, DispatchActions.
I usually do this way:
public class MyDispatchAction extends DispatchAction {
public ActionForward setUp(....) {
List dd1 = loadDropDown1();
request.setAttribute("dd1", dd1);
if (is some form property set) {
List dd2 = loadDropDown2(myFormProperty);
request.setAttribute("dd2", dd2);
}
return mapping.findForward("go");
}
public ActionForward doStuff(....) {
// do whatelse you need to
return mapping.findForward("go");
}
}
Then in my jsp page i have:
<html:form action="/MyDispatchAction">
<html:hidden property="methodToCall" value="doStuff"/>
<html:select property="country"
onchange="this.form.methodToCall.value='setUp'; this.form.submit()">
<html:options collection="dd1" property="value" labelProperty="label"/>
</html:select>
<html:select property="city">
<c:if test="${!empty dd2}">
<html:options collection="dd2" property="value" labelProperty="label"/>
</c:if>
</html:select>
</html:form>
Hope that helped.
Cheers,
Daniel Silva.
On 11/2/05, Neil Meyer <[EMAIL PROTECTED]> wrote:
> I want to populate the first dropdown with every country in the world and
> then the second one will show the cities for this.
>
> The data is static but the result is big.
>
> Thanks
> Neil
>
> -----Original Message-----
> From: Thor Kristensen [mailto:[EMAIL PROTECTED]
> Sent: 02 November 2005 03:40 PM
> To: 'Struts Users Mailing List'
> Subject: RE: Struts dropdown boxes
>
> Or, if the data is pretty static and of a modest size, perform the
> population of the second drop down box in javascript.
> Although, it'd be much better as Thai proposed, since with javascript you'd
> write browser dependent code.
>
>
> Mvh
> Thor
>
>
> > -----Original Message-----
> > From: Vu, Thai [mailto:[EMAIL PROTECTED]
> > Sent: Wednesday, November 02, 2005 2:33 PM
> > To: Struts Users Mailing List
> > Subject: RE: Struts dropdown boxes
> >
> > I will submit that form whenever the first dropdown list
> > changes and then load the data to the 2nd.
> >
> > -----Original Message-----
> > From: Neil Meyer [mailto:[EMAIL PROTECTED]
> > Sent: Wednesday, November 02, 2005 7:26 AM
> > To: Struts Users Mailing List
> > Subject: Struts dropdown boxes
> >
> > Hi,
> >
> > I need to have 2 dropdown boxes on my jsp page. The first
> > dropdowns selected value will determine what is pulled from
> > the database for the second dropdown.
> >
> > I know there is a few ways of doing it but would like to know
> > what most of the people recommend doing this.
> >
> > Your help is really appreciated.
> >
> > Regards
> > Neil Meyer
> >
> > ---------------------------------------------------------------------
> > To unsubscribe, e-mail: [EMAIL PROTECTED]
> > For additional commands, e-mail: [EMAIL PROTECTED]
> >
> >
> > ---------------------------------------------------------------------
> > To unsubscribe, e-mail: [EMAIL PROTECTED]
> > For additional commands, e-mail: [EMAIL PROTECTED]
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: [EMAIL PROTECTED]
> For additional commands, e-mail: [EMAIL PROTECTED]
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: [EMAIL PROTECTED]
> For additional commands, e-mail: [EMAIL PROTECTED]
>
>
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
