Simple and zero-configuration gem to quickly add Markdown rendering to your Rails views. Once installed, just use in any view:

<%= markdown "**Hello** _world_" %>

This gem uses kramdown and rouge and will require them automatically. You also need a Redis server running both locally and in production as this gem uses a redis-back cached.

The selected input format is GitHub Flavored Markdown.

Add this to your Gemfile, then run bundle install :

gem "markdown_cache", "~> 0.1"

You may use the provided CSS file for syntax highlighting (GitHub style) or download any pygments-compatible CSS stylesheet (.highlight CSS class):

/*
 *= require markdown_cache
 */

By default, the gem will pick up the local Redis instance or the one defined with REDIS_URL but if you need to be specific, add an initializer to your Rails app, for instance:

# config/initializers/markdown_cache.rb
if Rails.env.production?
  MarkdownCache.configure do |config|
    config.redis = { url: ENV['REDISCLOUD_URL'] }
  end
end