[Templates] process lists of array_refs with Template-Toolkit?

[Axel Gerstmair]

On Monday, October 20, 2003 at 11:56, mt wrote:
> i want to know if it is in general possible to process lists of 
> array_refs with Template-Toolkit.

> [...]
> is it possible to process arrays of array, hashes of arrays, lists of
> array_refs with Template?

Sure, Template Toolkit supports all these standard Perl constructs. I
didn't really understand your code snippets :-), but you can do the
following things (and more):

in Perl:

   my $vars = {
      'myarrayref' => [1, 2, 3],
      'myhashref' => {
              1 => 'one',
              2 => 'two',
              3 => 'three',
              },
      'mynestedstruct' => {
              nestedlist => ['x', 'y', 'z'],
              },
      'mynestedlist' => [
              ['a', 'b', 'c'],
              ['d', 'e', 'f'],
              ['g', 'h', 'i'],
              ],
   };
   # ...
   $template->process('test.tt2', $vars);

in test.tt2:

   List all entries of a simple list:
   [% FOREACH item = myarrayref %]
      [% item %]
   [% END %]
   
   List all entries of a simple hashtable:
   [% FOREACH key = myhashref.keys %]
      [% key %] => [% myhashref.$key %]
   [% END %]

   Show first list entry of hash element 'nestedlist':
   [% mynestedstruct.nestedlist.0 %]

   List all entries of a doubly nested list:
   [% FOREACH outer = mynestedlist %]
      [% FOREACH inner = outer %]
          [% inner %]
      [% END %]
   [% END %]

I hope you get the drift. The TT manual provides many helpful hints,
too.

Best regards,
Axel