Add a customer renderer but I get missing template

Rails
1

Hi,

I’m trying to include the support of
Msgpackhttps://github.com/msgpack/msgpack-ruby in
Rails 3.2 but when I try to return a mpac response, I get an error
concerning a missing template.

My renderer:

Mime::Type.register ‘application/x-mpac’, :mpac
ActionController::Renderers.add :mpac do |mpac, options|
self.content_type ||= Mime::MPAC
self.response_body = mpac.respond_to?(:to_msgpack) ? mpac.to_msgpack
: mpac
end

My controller:

class UsersController < ApplicationController
respond_to :mpac, :json

def show
respond_with({ hello: ‘world’ })
end
end

And my serializer:

require ‘msgpack’

module ActiveModel
module Serializers
module MPAC
extend ActiveSupport::Concern
include ActiveModel::Serialization

  included do
    extend ActiveModel::Naming
  end

  def to_mpac(options = nil)
    serializable_hash(options).to_msgpack
  end
  alias_method :to_msgpack, :to_mpac

  def from_mpac(msg)
    MessagePack.unpack(msg)
  end
end

end
end

Anyone has an idea ?

Thanks.