[Templates] How To Throw Exception on Missing Method

[Cees Hek]

On 7/26/07, Matisse Enzer <menzer@apple.com> wrote:
>
> On Jul 25, 2007, at 8:36 PM, Bill Moseley wrote:
>
> > On Wed, Jul 25, 2007 at 01:30:46PM -0700, Matisse Enzer wrote:
> With DEBUG_UNDEF this template produces an error if    someMethod()
> exists but
> returns and empty list:
>
>      [% FOREACH thing IN object.someMethod %]
>          [% thing %]
>      [% END %]
>
> What I want is an error only if $object is undef, or if there is no
> someMethod()   defined, and I want this behavior globally.

How about this:

[% IF object.can('someMethod') %]
     [% FOREACH thing IN object.someMethod %]
         [% thing %]
     [% END %]
[% END %]

Cheers,

Cees