Another way is to use an accessor method in the container, e.g.
getFOTitle(). Implementation as follows:
public String getFOTitle() {
FirstObject fo = getFirstObject();
if (fo != null) {
return fo.getTitle();
}
return "";
}
It has the benefits of not needing to use the pageBeginRender, not
requiring a bean to store it (plus the hit of object creation), and
reducing the ognl work that needs to be done.
Then in your template just use ognl:FOTitle.
-Mike
On 3/28/06, Eduardo Valentim <[EMAIL PROTECTED]> wrote:
> Hi marc,
>
> You can do this in your page class:
>
> @Bean
> public abstract FirstObject getFirstObject();
>
> or, put this in your .page:
>
> <bean name="firstObject" class="the.package.FirstObject"/>
>
> And in the ognl expression:
>
> ... value="ognl:beans.firstObject.title" ...
>
> AND leaves tapestry to work for you.
>
> I think that I am correct!!! :)
>
> On Tue, 2006-03-28 at 08:27 +0200, Marc Ende wrote:
> > Hi,
> >
> > I'm currently looking for a solution for the following problem:
> >
> > I've got some @Input, @Text and @TextArea Fields in a Form.
> > These are filled with a value="ognl:firstObject.title" for example.
> > If the firstObject is null it causes an exception (source is null for
> > getProperty(null, "title"))
> >
> > I've tried to do something like an @If with condition ognl:firstObject
> > and conditionValue="null" to detect the null and avoid parsing the
> > statements wich causes the exceptions.
> > But this way wasn't successful.
> >
> > So, my question: wich is the common way to handle this cases?
> >
> > Thanks for your help.
> >
> > marc
> >
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