Configuration

You change it either in your config.yml file:

    serializer: "YAML"

Or in the application code:

    # setting JSON as the default serializer
    set serializer => 'JSON';

In your routes you can access parameters just like any route.

When in a route you return a Perl data structure, it will be serialized automatically to the respective serialized engine (for instance, "JSON").

For "PUT" and "POST" methods you can access the "request->body" as a string, and you can unserialize it, if you really need to. If your content type is recognized by the serializer, "request->body" will be unserialized automatically, and it will be available as a standard parameter.

For instance, if you call

 curl -X POST -H 'Content-Type: application/json' -d '{"id":"bar"}' /foo

your "foo" route can do something like:

  post "/foo" => {
     my $id = param('id'); # gets "bar"
     #  ...
  }