revisions are in

Gemfile

@@ -2,6 +2,8 @@ source 'http://rubygems.org'
 
 gemspec
 
+gem "comfortable_mexican_sofa", github: "comfy/comfortable-mexican-sofa"
+
 gem 'kaminari'
 
 group :development do

app/controllers/comfy/admin/blog/revisions/post_controller.rb

@@ -0,0 +1,22 @@
+class Comfy::Admin::Blog::Revisions::PostController < Comfy::Admin::Cms::Revisions::BaseController
+
+  def show
+    @current_content    = @record.fragments.inject({}){|c, b| c[b.identifier] = b.content; c }
+    @versioned_content  = @record.fragments.inject({}){|c, b| c[b.identifier] = @revision.data['fragments_attributes'].detect{|r| r[:identifier] == b.identifier}.try(:[], :content); c }
+
+    render "comfy/admin/cms/revisions/show"
+  end
+
+private
+
+  def load_record
+    @record = @site.blog_posts.find(params[:blog_post_id])
+  rescue ActiveRecord::RecordNotFound
+    flash[:danger] = I18n.t('comfy.admin.cms.revisions.record_not_found')
+    redirect_to comfy_admin_blog_posts_path(@site)
+  end
+
+  def record_path
+    edit_comfy_admin_blog_post_path(@site, @record)
+  end
+end

app/models/comfy/blog/post.rb

@@ -5,6 +5,8 @@ class Comfy::Blog::Post < ActiveRecord::Base
   include Comfy::Cms::WithFragments
   include Comfy::Cms::WithCategories
 
+  cms_has_revisions_for :fragments_attributes
+
   # -- Relationships -----------------------------------------------------------
   belongs_to :site,
     class_name: 'Comfy::Cms::Site'

app/views/comfy/admin/blog/posts/edit.html.haml

@@ -1,3 +1,7 @@
+- content_for :right_column do
+  - link = comfy_admin_blog_post_revisions_path(@site, @post)
+  = render "comfy/admin/cms/revisions/sidebar", record: @post, link: link
+
 .page-header
   %h2= t('.title')
 

config/environments/development.rb

@@ -57,4 +57,6 @@
   config.file_watcher = ActiveSupport::EventedFileUpdateChecker
 
   config.active_job.queue_adapter = :inline
+
+  config.action_view.raise_on_missing_translations = true
 end

config/environments/test.rb

@@ -44,4 +44,6 @@
   # config.action_view.raise_on_missing_translations = true
 
   config.active_job.queue_adapter = :inline
+
+  config.action_view.raise_on_missing_translations = true
 end

lib/comfy_blog/routes/blog_admin.rb

@@ -7,7 +7,11 @@ def comfy_route_blog_admin(options = {})
     scope module: :comfy, as: :comfy do
       scope module: :admin do
         namespace :blog, as: :admin, path: path, except: [:show] do
-          resources :posts, as: :blog_posts, path: "blog-posts"
+          resources :posts, as: :blog_posts, path: "blog-posts" do
+            resources :revisions, only: [:index, :show], controller: "revisions/post" do
+              patch :revert, on: :member
+            end
+          end
         end
       end
     end

test/controllers/comfy/admin/blog/revisions/post_controller_test.rb

@@ -0,0 +1,67 @@
+require_relative '../../../../../test_helper'
+
+class Comfy::Admin::Cms::Revisions::PageControllerTest < ActionDispatch::IntegrationTest
+
+  setup do
+    @site     = comfy_cms_sites(:default)
+    @post     = comfy_blog_posts(:default)
+    @revision = comfy_cms_revisions(:post)
+  end
+
+  def test_get_index
+    r :get, comfy_admin_blog_post_revisions_path(@site, @post)
+    assert_response :redirect
+    assert_redirected_to action: :show, id: @revision
+  end
+
+  def test_get_index_with_no_revisions
+    Comfy::Cms::Revision.delete_all
+    r :get, comfy_admin_blog_post_revisions_path(@site, @post)
+    assert_response :redirect
+    assert_redirected_to edit_comfy_admin_blog_post_path(@site, @post)
+  end
+
+  def test_get_show
+    r :get, comfy_admin_blog_post_revision_path(@site, @post, @revision)
+    assert_response :success
+    assert assigns(:record)
+    assert assigns(:revision)
+    assert assigns(:record).is_a?(Comfy::Blog::Post)
+    assert_template :show
+  end
+
+  def test_get_show_for_invalid_record
+    r :get, comfy_admin_blog_post_revision_path(@site, "invalid", @revision)
+    assert_response :redirect
+    assert_redirected_to comfy_admin_blog_posts_path(@site)
+    assert_equal 'Record Not Found', flash[:danger]
+  end
+
+
+  def test_get_show_failure
+    r :get, comfy_admin_blog_post_revision_path(@site, @post, "invalid")
+    assert_response :redirect
+    assert assigns(:record)
+    assert_redirected_to edit_comfy_admin_blog_post_path(@site, assigns(:record))
+    assert_equal 'Revision Not Found', flash[:danger]
+  end
+
+  def test_revert
+    assert_difference -> {@post.revisions.count} do
+      r :patch, revert_comfy_admin_blog_post_revision_path(@site, @post, @revision)
+      assert_response :redirect
+      assert_redirected_to edit_comfy_admin_blog_post_path(@site, @post)
+      assert_equal 'Content Reverted', flash[:success]
+
+      @post.reload
+
+      assert_equal [{
+        identifier: "content",
+        tag:        "text",
+        content:    "old content",
+        datetime:   nil,
+        boolean:    false
+      }], @post.fragments_attributes
+    end
+  end
+end

test/fixtures/comfy/cms/revisions.yml

@@ -0,0 +1,7 @@
+post:
+  record: default (Comfy::Blog::Post)
+  data: <%= {
+    "fragments_attributes" => [
+      { "identifier" => "content",
+        "content"    => "old content" }
+    ]}.to_yaml.inspect %>