Migrate to Heroku's Cedar stack

.ruby-gemset

@@ -0,0 +1 @@
+demo-activeadmin

.ruby-version

@@ -0,0 +1 @@
+2.0.0

Gemfile

@@ -1,21 +1,27 @@
 source 'http://rubygems.org'
 
-gem 'rails', '3.0.10'
-gem 'sqlite3-ruby', :require => 'sqlite3'
-gem 'nifty-generators'
-gem "activeadmin", '0.5.0'
-gem "faker"
-gem 'newrelic_rpm', '3.1.1'
-gem 'hoptoad_notifier', '2.4.11'
+gem 'rails',       '3.0.20'
+gem 'activeadmin', '0.6.2'
+gem 'unicorn'
+gem 'pg'
+
+gem 'mechanize'
+gem 'faker'
 gem 'rack-throttle'
+gem 'newrelic_rpm'
+gem 'hoptoad_notifier'
 
 group :development do
-  gem 'mechanize'
+  # Debugging
+  gem 'better_errors'      # Web UI to debug exceptions. Go to /__better_errors to access the latest one
+  gem 'binding_of_caller'  # Retrieve the binding of a method's caller in MRI Ruby >= 1.9.2
+
+  # Performance
+  gem 'rack-mini-profiler' # Inline app profiler. See ?pp=help for options.
+  gem 'flamegraph'         # Flamegraph visualiztion: ?pp=flamegraph
 end
 
 group :production do
-  gem 'unicorn'
-
   # Enable gzip compression on heroku, but don't compress images.
   gem 'heroku-deflater'
 

Gemfile.lock

@@ -2,163 +2,192 @@ GEM
   remote: http://rubygems.org/
   specs:
     abstract (1.0.0)
-    actionmailer (3.0.10)
-      actionpack (= 3.0.10)
+    actionmailer (3.0.20)
+      actionpack (= 3.0.20)
       mail (~> 2.2.19)
-    actionpack (3.0.10)
-      activemodel (= 3.0.10)
-      activesupport (= 3.0.10)
+    actionpack (3.0.20)
+      activemodel (= 3.0.20)
+      activesupport (= 3.0.20)
       builder (~> 2.1.2)
       erubis (~> 2.6.6)
       i18n (~> 0.5.0)
-      rack (~> 1.2.1)
+      rack (~> 1.2.5)
       rack-mount (~> 0.6.14)
       rack-test (~> 0.5.7)
       tzinfo (~> 0.3.23)
-    activeadmin (0.5.0)
-      arbre (>= 1.0.1)
-      bourbon (>= 1.0.0)
-      devise (>= 1.1.2)
-      fastercsv
-      formtastic (>= 2.0.0)
-      inherited_resources (>= 1.3.1)
-      jquery-rails (>= 1.0.0)
-      kaminari (>= 0.13.0)
-      meta_search (>= 0.9.2)
-      rails (>= 3.0.0)
-      sass (>= 3.1.0)
-    activemodel (3.0.10)
-      activesupport (= 3.0.10)
+    activeadmin (0.6.2)
+      arbre (~> 1.0)
+      bourbon (>= 1.0.0, < 4)
+      devise (>= 1.5.4, < 4)
+      formtastic (~> 2.0)
+      inherited_resources (~> 1.3)
+      jquery-rails (>= 1.0.0, < 3)
+      kaminari (~> 0.13)
+      meta_search (~> 1.0)
+      rails (>= 3.0.0, < 4)
+      sass (~> 3.1)
+    activemodel (3.0.20)
+      activesupport (= 3.0.20)
       builder (~> 2.1.2)
       i18n (~> 0.5.0)
-    activerecord (3.0.10)
-      activemodel (= 3.0.10)
-      activesupport (= 3.0.10)
+    activerecord (3.0.20)
+      activemodel (= 3.0.20)
+      activesupport (= 3.0.20)
       arel (~> 2.0.10)
       tzinfo (~> 0.3.23)
-    activeresource (3.0.10)
-      activemodel (= 3.0.10)
-      activesupport (= 3.0.10)
-    activesupport (3.0.10)
+    activeresource (3.0.20)
+      activemodel (= 3.0.20)
+      activesupport (= 3.0.20)
+    activesupport (3.0.20)
     arbre (1.0.1)
       activesupport (>= 3.0.0)
     arel (2.0.10)
-    bcrypt-ruby (3.0.1)
-    bourbon (2.1.1)
-      sass (>= 3.1)
+    bcrypt-ruby (3.1.2)
+    better_errors (1.0.1)
+      coderay (>= 1.0.0)
+      erubis (>= 2.6.6)
+    binding_of_caller (0.7.2)
+      debug_inspector (>= 0.0.1)
+    bourbon (3.1.8)
+      sass (>= 3.2.0)
+      thor
     builder (2.1.2)
-    devise (1.5.3)
+    coderay (1.1.0)
+    debug_inspector (0.0.2)
+    devise (1.5.4)
       bcrypt-ruby (~> 3.0)
       orm_adapter (~> 0.0.3)
       warden (~> 1.1)
+    domain_name (0.5.15)
+      unf (>= 0.0.5, < 1.0.0)
     erubis (2.6.6)
       abstract (>= 1.0.0)
-    faker (0.9.5)
-      i18n (~> 0.4)
-    fastercsv (1.5.5)
+    faker (1.2.0)
+      i18n (~> 0.5)
+    fast_stack (0.1.0)
+      rake
+      rake-compiler
+    flamegraph (0.0.4)
+      fast_stack
     formtastic (2.2.1)
       actionpack (>= 3.0)
     has_scope (0.5.1)
     heroku-deflater (0.2.0)
     hoptoad_notifier (2.4.11)
       activesupport
       builder
-    i18n (0.5.0)
+    http-cookie (1.0.2)
+      domain_name (~> 0.5)
+    i18n (0.5.2)
     inherited_resources (1.3.1)
       has_scope (~> 0.5.0)
       responders (~> 0.6)
-    jquery-rails (1.0.19)
-      railties (~> 3.0)
-      thor (~> 0.14)
-    kaminari (0.13.0)
+    jquery-rails (2.3.0)
+      railties (>= 3.0, < 5.0)
+      thor (>= 0.14, < 2.0)
+    json (1.8.1)
+    kaminari (0.15.0)
       actionpack (>= 3.0.0)
       activesupport (>= 3.0.0)
-      railties (>= 3.0.0)
     kgio (2.8.1)
-    mail (2.2.19)
+    mail (2.2.20)
       activesupport (>= 2.3.6)
       i18n (>= 0.4.0)
       mime-types (~> 1.16)
       treetop (~> 1.4.8)
-    mechanize (2.0.1)
+    mechanize (2.7.2)
+      domain_name (~> 0.5, >= 0.5.1)
+      http-cookie (~> 1.0.0)
+      mime-types (~> 1.17, >= 1.17.2)
       net-http-digest_auth (~> 1.1, >= 1.1.1)
-      net-http-persistent (~> 1.8)
+      net-http-persistent (~> 2.5, >= 2.5.2)
       nokogiri (~> 1.4)
-      webrobots (~> 0.0, >= 0.0.9)
+      ntlm-http (~> 0.1, >= 0.1.1)
+      webrobots (>= 0.0.9, < 0.2)
     meta_search (1.0.6)
       actionpack (~> 3.0.2)
       activerecord (~> 3.0.2)
       activesupport (~> 3.0.2)
       arel (~> 2.0.2)
-    mime-types (1.16)
-    net-http-digest_auth (1.1.1)
-    net-http-persistent (1.9)
-    newrelic_rpm (3.1.1)
-    nifty-generators (0.4.6)
-    nokogiri (1.5.0)
+    mime-types (1.25.1)
+    mini_portile (0.5.2)
+    net-http-digest_auth (1.4)
+    net-http-persistent (2.9)
+    newrelic_rpm (3.6.9.171)
+    nokogiri (1.6.0)
+      mini_portile (~> 0.5.0)
+    ntlm-http (0.1.1)
     orm_adapter (0.0.7)
-    polyglot (0.3.2)
-    rack (1.2.3)
+    pg (0.17.0)
+    polyglot (0.3.3)
+    rack (1.2.8)
+    rack-mini-profiler (0.1.31)
+      rack (>= 1.1.3)
     rack-mount (0.6.14)
       rack (>= 1.0.0)
     rack-test (0.5.7)
       rack (>= 1.0)
     rack-throttle (0.3.0)
       rack (>= 1.0.0)
-    rails (3.0.10)
-      actionmailer (= 3.0.10)
-      actionpack (= 3.0.10)
-      activerecord (= 3.0.10)
-      activeresource (= 3.0.10)
-      activesupport (= 3.0.10)
+    rails (3.0.20)
+      actionmailer (= 3.0.20)
+      actionpack (= 3.0.20)
+      activerecord (= 3.0.20)
+      activeresource (= 3.0.20)
+      activesupport (= 3.0.20)
       bundler (~> 1.0)
-      railties (= 3.0.10)
+      railties (= 3.0.20)
     rails_12factor (0.0.2)
       rails_serve_static_assets
       rails_stdout_logging
     rails_serve_static_assets (0.0.1)
     rails_stdout_logging (0.0.3)
-    railties (3.0.10)
-      actionpack (= 3.0.10)
-      activesupport (= 3.0.10)
+    railties (3.0.20)
+      actionpack (= 3.0.20)
+      activesupport (= 3.0.20)
       rake (>= 0.8.7)
       rdoc (~> 3.4)
       thor (~> 0.14.4)
     raindrops (0.12.0)
-    rake (0.9.2)
-    rdoc (3.9.4)
+    rake (10.1.0)
+    rake-compiler (0.9.2)
+      rake
+    rdoc (3.12.2)
+      json (~> 1.4)
     responders (0.6.5)
-    sass (3.2.1)
-    sqlite3 (1.3.4)
-    sqlite3-ruby (1.3.3)
-      sqlite3 (>= 1.3.3)
+    sass (3.2.12)
     thor (0.14.6)
-    treetop (1.4.10)
+    treetop (1.4.15)
       polyglot
       polyglot (>= 0.3.1)
-    tzinfo (0.3.29)
+    tzinfo (0.3.38)
+    unf (0.1.3)
+      unf_ext
+    unf_ext (0.0.6)
     unicorn (4.7.0)
       kgio (~> 2.6)
       rack
       raindrops (~> 0.7)
-    warden (1.2.1)
+    warden (1.2.3)
       rack (>= 1.0)
-    webrobots (0.0.11)
-      nokogiri (>= 1.4.4)
+    webrobots (0.1.1)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
-  activeadmin (= 0.5.0)
+  activeadmin (= 0.6.2)
+  better_errors
+  binding_of_caller
   faker
+  flamegraph
   heroku-deflater
-  hoptoad_notifier (= 2.4.11)
+  hoptoad_notifier
   mechanize
-  newrelic_rpm (= 3.1.1)
-  nifty-generators
+  newrelic_rpm
+  pg
+  rack-mini-profiler
   rack-throttle
-  rails (= 3.0.10)
+  rails (= 3.0.20)
   rails_12factor
-  sqlite3-ruby
   unicorn

config/application.rb

@@ -6,6 +6,9 @@
 # you've limited to :test, :development, or :production.
 Bundler.require(:default, Rails.env) if defined?(Bundler)
 
+# https://github.com/rails/rails/issues/9619
+ActionController::Base.config.relative_url_root = ''
+
 require 'rack/throttle'
 
 module ActiveadminDepot

config/database.yml

@@ -1,22 +1,9 @@
-# SQLite version 3.x
-#   gem install sqlite3-ruby (not necessary on OS X Leopard)
 development:
-  adapter: sqlite3
-  database: db/development.sqlite3
-  pool: 5
-  timeout: 5000
+  adapter: postgresql
+  host: localhost
+  database: demo-activeadmin
 
-# Warning: The database defined as "test" will be erased and
-# re-generated from your development database when you run "rake".
-# Do not set this db to the same as development or production.
 test:
-  adapter: sqlite3
-  database: db/test.sqlite3
-  pool: 5
-  timeout: 5000
-
-production:
-  adapter: sqlite3
-  database: db/production.sqlite3
-  pool: 5
-  timeout: 5000
+  adapter: postgresql
+  host: localhost
+  database: demo-activeadmin-test