Now that the URL is mapped to the Controller method as expected, let us try something more challenging and show some HTML content. Instead of writing the HTML inside the response body as in the previous example, in this section, we will use a View. A View is a system that defines how content will be rendered. For this book, we will mostly be using the TT view which is based on a templating package, TT, that is available for any Perl program independent of Catalyst. To learn more about the TT package, visit http://template-toolkit.org/.
In the Controller method (sub index in Hello.pm), we will remove the line $c->response->body(). So, the Controller method looks like the following:
sub index :Path :Args(0) {
my ( $self, $c ) = @_;
}Please note that Catalyst takes care of forwarding the response to the default view after the Controller's execution. Later in this chapter, we will discover how Catalyst handles that and how it can be manipulated.
Let us create a View (using...