controllers

Gemfile

@@ -2,3 +2,5 @@ source 'https://rubygems.org'
 
 # Specify your gem's dependencies in md_simple_editor.gemspec
 gemspec
+
+gem 'redcarpet'

app/controllers/md_simple_editor_controller.rb

@@ -0,0 +1,5 @@
+class MdSimpleEditorController < ApplicationController
+	def preview
+
+	end
+end

config/routes.rb

@@ -1,3 +1,6 @@
 Rails.application.routes.draw do
-	get 'md/preview'
+	get 'md_simple_editor/preview' do
+		options = {autolink: true, tables: true, hard_wrap: true, no_intraemphasis: true, fenced_code:true, gh_blockcode: true}
+		Redcarpet::Markdown.new(Redcarpet::Render::HTML, options).render(params['md_simple']).html_safe
+	end
 end

md_simple_editor.gemspec

@@ -22,4 +22,5 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency "rake"
 
   spec.add_runtime_dependency "font-awesome-rails", "~> 4.0.3.1"
+  spec.add_runtime_dependency "redcarpet", "~> 3.1.2"
 end