Question

I try to display an array item in dancer, here is the code:

get '/' => sub {
  my @rows = ('aaa','bbb','ccc');
  template 'crud.tt', {'rows' => \@rows};
};

and the template is:

  <h2><% $rows[1] %></h2>
  <h2><% rows[1] %></h2>
  <% FOREACH r IN rows %>
    <p><% r %></p>
  <% END %>

In the h2 element show nothing, what is the right way?

Answer 1

You can’t pass anything but a simple scalar value if you are using the default Dancer template engine. But if you enable Template::Toolkit as the engine then all kinds of things are possible.

You can do this globally by setting template: template_toolkit in the YAML config file, or you can set it just for this route by writing

get '/' => sub {
  my @rows = ('aaa','bbb','ccc');
  set template => 'template_toolkit';
  template 'crud.tt', { rows => \@rows };
};

Your template will look like

<h2><% rows.1 %></h2>
<% FOREACH r IN rows %>
<p><% r %></p>
<% END %>

and you will need

use Template;

to load the Template::Toolkit module before you use either method