Jekyll Converter for R Markdown - r

Question

I am trying to write a Jekyll converter for R Markdown files. I created RMarkdownConverter.rb and placed it in my _plugins directory. I have verified that other plugins are working but this one is not. I also don't see any error messages, including the ones I put in myself. It seems this is not being used. However, Jekyll is generating an HTML file for my .Rmd file but simply processes the R chuck as code chuck. Any help or thoughts would be greatly appreciated.
RMarkdownConverter.rb file:
module Jekyll
class RMarkdownConverter < Converter
safe true
priority :low
def setup
STDERR.puts "Setting up R Markdown..."
return if #setup
require 'rinruby'
#setup = true
rescue
STDERR.puts 'do `gem install rinruby`'
raise FatalException.new("Missing dependency: rinruby")
end
def matches(ext)
ext =~ /Rmd/i
end
def output_ext(ext)
'.html'
end
def convert(content)
setup
STDERR.puts "Using R Markdown..."
R.eval "require(knitr)"
R.eval "render_markdown(strict=TRUE)"
R.assign "content", content
STDERR.puts content
R.eval "out <- knit(text=content)"
R.eval "print(out)"
end
end
end
The contents of my first R Markdown post:
---
layout: post
title: Using (R) Markdown, Jekyll, and Github for Blogging
published: true
tags: R R-Bloggers Jekyll github
type: post
status: publish
---
First, we need to install [RinRuby](https://sites.google.com/a/ddahl.org/rinruby-users/) to call R from Ruby. In the terminal, execute:
gem install rinruby
First R chuck:
```{r}
2 + 2
```

Answer 1

Try replacing the last few lines with the following
R.assign "content", content
R.eval "knitr::render_markdown(strict = TRUE)"
R.pull "(knitr::knit2html(text = content, fragment.only = TRUE))"
I think you need R.pull to copy the contents of R output to Ruby. Moreover, I would recommend directly converting from Rmd to html. I have used this strategy successfully in working with Ruhoh which is another ruby based blogging platform.
UPDATE. It is very odd but using the extension rmd seems to conflict with md. I changed it randomly to ram and jekyll seems to pick it up correctly. I am not sure why.