From 936dac6baa167b20cd3d2ffbd560d81180b840cb Mon Sep 17 00:00:00 2001
From: Marcin Kulik <marcin.kulik@gmail.com>
Date: Fri, 6 Apr 2012 23:46:44 +0200
Subject: [PATCH] Markdown in comments

---
 .../backbone/templates/comments/show.jst.hbs           |  4 ++--
 app/controllers/api/comments_controller.rb             |  5 +++--
 app/decorators/application_decorator.rb                | 10 +++++++++-
 app/decorators/comment_decorator.rb                    | 10 ++++++++++
 config/initializers/markdown.rb                        |  5 +++++
 spec/decorators/comment_decorator_spec.rb              |  5 +++++
 6 files changed, 34 insertions(+), 5 deletions(-)
 create mode 100644 app/decorators/comment_decorator.rb
 create mode 100644 config/initializers/markdown.rb
 create mode 100644 spec/decorators/comment_decorator_spec.rb

diff --git a/app/assets/javascripts/backbone/templates/comments/show.jst.hbs b/app/assets/javascripts/backbone/templates/comments/show.jst.hbs
index 75618fc..199cc88 100644
--- a/app/assets/javascripts/backbone/templates/comments/show.jst.hbs
+++ b/app/assets/javascripts/backbone/templates/comments/show.jst.hbs
@@ -1,5 +1,5 @@
 <div class="left">
-  <a href="{{profile_path}}"><img src="{{user.avatar_url}}" alt="{{user.nickanme}}" class="avatar" /></a>
+  <a href="{{profile_path}}"><img src="{{user.avatar_url}}" alt="{{user.nickname}}" class="avatar" /></a>
 </div>
 
 <div class="right">
@@ -10,7 +10,7 @@
     | <a href="#" class="remove">remove</a>
     {{/if}}
   </div>
-  <div class="body">{{body}}</div>
+  <div class="body">{{{processed_body}}}</div>
 </div>
 
 <div class="clear"></div>
diff --git a/app/controllers/api/comments_controller.rb b/app/controllers/api/comments_controller.rb
index 1517c67..8bbe0ce 100644
--- a/app/controllers/api/comments_controller.rb
+++ b/app/controllers/api/comments_controller.rb
@@ -5,7 +5,7 @@ class Api::CommentsController < ApplicationController
   before_filter :load_asciicast, :only => [:index, :create]
 
   def index
-    respond_with @asciicast.comments
+    respond_with CommentDecorator.decorate(@asciicast.comments)
   end
 
   def create
@@ -15,7 +15,8 @@ class Api::CommentsController < ApplicationController
 
     @comment.save
 
-    respond_with @comment, :location => api_comment_url(@comment)
+    comment = CommentDecorator.new(@comment)
+    respond_with comment, :location => api_comment_url(@comment)
   end
 
   def destroy
diff --git a/app/decorators/application_decorator.rb b/app/decorators/application_decorator.rb
index 9dd031c..208d91f 100644
--- a/app/decorators/application_decorator.rb
+++ b/app/decorators/application_decorator.rb
@@ -25,4 +25,12 @@ class ApplicationDecorator < Draper::Base
   #   def updated_at
   #     formatted_timestamp(model.updated_at)
   #   end
-end
\ No newline at end of file
+
+  def markdown(text)
+    MKD_RENDERER.render(text)
+  end
+
+  def as_json(*args)
+    model.as_json(*args)
+  end
+end
diff --git a/app/decorators/comment_decorator.rb b/app/decorators/comment_decorator.rb
new file mode 100644
index 0000000..223741f
--- /dev/null
+++ b/app/decorators/comment_decorator.rb
@@ -0,0 +1,10 @@
+class CommentDecorator < ApplicationDecorator
+  decorates :comment
+
+  def as_json(*args)
+    data = model.as_json(*args)
+    data['processed_body'] = markdown(data['body'])
+    data
+  end
+
+end
diff --git a/config/initializers/markdown.rb b/config/initializers/markdown.rb
new file mode 100644
index 0000000..5971266
--- /dev/null
+++ b/config/initializers/markdown.rb
@@ -0,0 +1,5 @@
+MKD_RENDERER = Redcarpet::Markdown.new(
+  Redcarpet::Render::HTML.new(:filter_html => true),
+  :no_intra_emphasis => true,
+  :autolink => true
+)
diff --git a/spec/decorators/comment_decorator_spec.rb b/spec/decorators/comment_decorator_spec.rb
new file mode 100644
index 0000000..f379a84
--- /dev/null
+++ b/spec/decorators/comment_decorator_spec.rb
@@ -0,0 +1,5 @@
+require 'spec_helper'
+
+describe CommentDecorator do
+  before { ApplicationController.new.set_current_view_context }
+end