Beginning migration to rails 4

Gemfile

@@ -1,122 +1,87 @@
 source 'https://rubygems.org'
 
-
 # -------------------------------------------------------------- BASE RAILS GEMS
-gem 'rails', '3.2.9'
-gem 'rack', '1.4.1'  # https://makandracards.com/makandra/13580-fix-warning-no-secret-option-provided-to-rack-session-cookie
-gem 'jquery-rails'
+gem 'rails', '4.0.0'
 gem 'sqlite3'
 gem 'mysql2'
 gem 'activerecord-mysql-adapter'
-gem 'memoist'
 
-gem 'haml-rails', :group => :development
-gem 'thin'
+# --- backward compatibility (TO BE REMOVED!)
+gem 'protected_attributes'
 
 # ---------------------------------------------------- CAPISTRANO FOR DEPLOYMENT
 gem 'capistrano'
 gem 'rvm-capistrano'
 
 # ------------------------------------------------------------ APP SPECIFIC GEMS
 
-# authentication and acl
-gem "devise", ">= 2.1.2"
+# --- xml parsing
+# gem "nokogiri"
+gem "ox", "~> 2.0.3"
+
+# --- sphinx full text search
+gem 'thinking-sphinx', '2.0.10'
+
+# --- authentication and acl
 #gem "devise_invitable", '~> 1.1.0'
+gem "devise", github: 'plataformatec/devise'
 gem "cancan", ">= 1.6.8"
 gem "rolify", ">= 3.2.0"
 
-# app configuration: config/application.yml
+# --- app configuration: config/application.yml
 gem "figaro", ">= 0.5.0"
 
-# for easily passing variables to javascript
+# --------------------------------------------------------------------------- js
+gem 'jquery-rails'
+# --- for easily passing variables to javascript
 # http://railscasts.com/episodes/324-passing-data-to-javascript
 # https://github.com/gazay/gon
 gem 'gon'
 
-# pdf rendering
+# -------------------------------------------------------------------- rendering
+# --- PDF rendering
 gem 'prawn'
 gem 'prawn_rails'
 
-# markdown rendering
+# --- markdown rendering
 gem 'bluecloth'
 
-# view helpers
-gem "bootstrap-sass", ">= 2.1.1.0"
-gem "simple_form", ">= 2.0.4"
+# --- html and css
+gem 'haml-rails', '~>0.4'
+gem 'sass-rails'               #, '~>4.0.0'
+gem 'coffee-rails'             #, '~>4.0.0'
+gem 'uglifier', '>= 1.3.0'
+
+# ----------------------------------------------------------------- view helpers
+gem "simple_form", github: 'plataformatec/simple_form'
 gem 'will_paginate', '~> 3.0.3'
 gem 'will_paginate-bootstrap'
-gem "better_errors", ">= 0.2.0", :group => :development
-
-gem "turbolinks"
+gem "bootstrap-sass", ">= 2.1.1.0"
 
-# http://www.mcbsys.com/techblog/2012/10/convert-a-select-drop-down-box-to-an-autocomplete-in-rails/
-# gem 'rails3-jquery-autocomplete'   # 1.0.10
-gem 'rails3-jquery-autocomplete', '1.0.9'
 
-group :assets do
-  gem 'sass-rails',   '~> 3.2.3'
-  gem 'coffee-rails', '~> 3.2.1'
-  gem 'uglifier', '>= 1.0.3'
-end
+# ------------------------------------------------------------------------ devel
+gem 'memoist'
 
 group :development do
+  gem 'thin'
   gem "quiet_assets", ">= 1.0.1"
   gem "binding_of_caller", ">= 0.6.8"
+  gem "better_errors", ">= 0.2.0"
 end
 
-# group :development, :test do
-#   gem "rspec-rails", ">= 2.11.4", :group => [:development, :test]
-#   gem "factory_girl_rails", ">= 4.1.0", :require => false
-#   gem "cucumber-rails", ">= 1.3.0", :require => false
-#   gem "database_cleaner", ">= 0.9.1"
-#   gem "email_spec", ">= 1.4.0"
-#   gem "launchy", ">= 2.1.2"
-#   gem "capybara", ">= 2.0.1"
-# end
-
+# ---------------------------------------------------------------------- testing
 group :test do
   # gem 'minitest'
   gem 'capybara'
   # gem 'turn'
 end
 
-# For searching book infos on the web https://github.com/jayfajardo/openlibrary
-# gem 'openlibrary'
-# gem 'lcclasses'   # library of congress classes (to parse output from loc query)
-# gem "nokogiri"
-gem "ox", "~> 2.0.3"
 
-# # Search logic: planty of helpers for searching only for rails 2   :(
-# gem 'searchlogic'
-
-# Full text search with Thinking Sphinx. DB must be under mysql or postgresql.
-# http://pat.github.com/ts/en/
-# http://railscasts.com/episodes/120-thinking-sphinx
-# https://github.com/pat/thinking-sphinx
-# --------------------
-# Devel install on mac
-# --------------------
-# brew install mysql
-# mysql_install_db --verbose --user=`whoami` --basedir="$(brew --prefix mysql)" --datadir=/usr/local/var/mysql --tmpdir=/tmp
-# mysql.server start
-# /usr/local/opt/mysql/bin/mysql_secure_installation
-# brew install sphinx --mysql
-# rake thinking_sphinx:index
-# rake thinking_sphinx:rebuild
-# rake thinking_sphinx:start
-gem 'thinking-sphinx', '2.0.10'
+# ------------------------------------------------------------------------ NOTES
+
+# For searching book infos on the web
+# gem 'openlibrary' # https://github.com/jayfajardo/openlibrary
+# gem 'lcclasses'   # library of congress classes (to parse output from loc query)
 
 
-# -------------------------------------------------------------------- REMIND ME
-# gem 'formtastic'
-# gem 'formtastic-bootstrap'
-# To use ActiveModel has_secure_password
-# gem 'bcrypt-ruby', '~> 3.0.0'
-# To use Jbuilder templates for JSON
-# gem 'jbuilder'
-# Use unicorn as the app server
-# gem 'unicorn'
-# To use debugger
-# gem 'debugger', :group => [:development]
-# gem 'cheat', :group => [:development]