Re: Calling a method does not work for me

Cody Burleson <[email protected]>
Newsgroups gmane.comp.web.freemarker.user
Message-ID <[email protected]>
As it turns out, my errors had to do with returning nulls. After some
further reading, I learned that there is really no such thing as the concept
of a null in Freemarker. For example, you can't pass a null to a method like
you can in Java (though there is a way around this). I check for nulls first
with <#if object.method()??> and that seemed to get me over the hump.

Thank you for taking the time to answer, though.

- Cody



On Wed, Jun 16, 2010 at 4:48 PM, Daniel Dekany <[email protected]> wrote:

> Wednesday, June 16, 2010, 8:21:30 PM, Cody Burleson wrote:
>
> > Friends,
> >
> > In a freemarker template, I am trying to call a simple getter method on
> an object like this:
> >
> > ${indy.getLabel("en")}
> >
> > But freemarker tells me no such method exists. Yet, in my
> > controller, just before giving this object to the view, I call the
> > same public method successfully and print the results. I am new to
> > freemarker, but documentation says you can do this. Any ideas what I
> > might be doing wrong or what I am misunderstanding?
>
> What is visible for templates (and how) depends on the ObjectWrapper,
> which is (normally) part of the freemarker.template.Configuration
> object. In most configurations what you try to do should work, because
> the default ObjectWrapper (and BeansWrapper) does expose methods by
> default. However, even these object wrappers can be configured to hide
> methods, for example with
> theObjectWrapper.setExposureLevel(BeansWrapper.EXPOSE_SAFE).
>
> Another rare but rather mean cause of methods becoming invisible is
> that the object whose method you want to call implements
> java.util.Map. In that case you can only get the Map keys, not the
> methods and JavaBean properties.
>
> > - Cody
>
> --
> Best regards,
>  Daniel Dekany
>
>


-- 
------------------------------------
Cody Burleson
Enterprise Web Architect
Base22

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