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perltemplate-toolkitdancer

More than one layout/wrapper with Dancer and Template::Toolkit

I followed this recipe to disable Dancer's "layout" and re-enable TT's "WRAPPER":

How to make a page-specific title in Dancer templates?

which appears to be necessary to change tokens within the layout/wrapper at the route level. Briefly, the linked recipe requires specifying a single layout/wrapper in the config.yml file.

The recipe works great when using one layout/wrapper, but how do I go about changing (or disabling) the template layout/wrapper at the route level?

Since Dancer's native layout is disabled, this does not work:

 template('mytemplate', { ... }, { layout => 'some_other_layout' });   # NO GOOD

Also, I tried changing the config prior to rendering template, but that doesn't appear to work either:

 # ALSO NO GOOD
 config->{'engines'}->{'template_toolkit'}->{'WRAPPER'} = 'some_other_layout';
 return template('mytemplate', { ... });

And I also tried using the Dancer set/setting, but also no good:

 # ALSO NO GOOD
 my $engines = setting('engines');
 $engines->{'template_toolkit'}->{'WRAPPER'} = 'some_other_layout';
 set engines => $engines;

Any ideas?

Solution

  • I think I figured it out. Thanks to Yanick and to the link referenced in my other answer (Kludgy Workaround #2) for the inspiration. Here's the recipe:

    1. Create a single wrapper file for use in your entire project, and make it:

      <% IF layout %>
<% INCLUDE "$layout" %>
<% ELSE %>
<% content %>
<% END %>

    2. Within your route:

      return template('mytemplate', {
  layout => 'layouts/some_layout.tt',
  param1 => data1,
  param2 => data2,
  ...
  });

    And bingo, you're done. Leave out the layout parameter, and will get no layout at all.