Markdown helper & parser for Middleman apps

markdown_helper.rb

# I use this in conjunction with Contentful CMS to render blocks of markdown into my static middleman templates.

# In your gemfile, add Redcarpet:
gem 'redcarpet'

# ...and do a bundle install

# In your config.rb, add this line:
set :markdown_engine, :redcarpet

# If you dont already have one, create a folder 'helpers' in your base project folder, alongside the 'source' folder.
# Inside this folder create a ruby helper called 'markdown_helper.rb'

# Inside this file paste the code below

module MarkdownHelper

  class Markdown

    class << self
      def renderer
        @@renderer ||= Redcarpet::Markdown.new(
          Redcarpet::Render::HTML,
          :autolink => true,
          :no_intra_emphasis => true,
          :tables => true,
          :fenced_code_blocks => true,
          :filter_html => false,
          :with_toc_data => true
        )
      end
    end

  end

  def markdown(&block)
    content = capture(&block)
    Markdown.renderer.render(content).html_safe
  end

end

# Now in your (slim) templates use:
= markdown do
  = [markdown entry from contentful]