Composer and rails 4

I'm trying to catch up with rails 4, since the official release was published few weeks ago. I've installed Ruby 2.0 as well to keep everything up to date. Now all my books of rails and Ruby are obsolete.

So what I want to try today is to use the Composer gem which is a collection of useful tools for creating a new app. This include an interactive menu where you are offer to include different configurations such as, visual template, security, type of server, test framework, etc.

I'm following this documentation for the setup:

https://github.com/RailsApps/rails-composer/blob/master/README.textile

$ mkdir vega
$ cd vega
$ rvm use ruby-2.0.0@myapp --ruby-version --create
$ gem install rails
$ rails new . -m https://raw.github.com/RailsApps/rails-composer/master/composer.rb -T

The reason for -T is because this way you can add the -T flags to skip Test::Unit if you are using RSpec for testing.



Here is the menu you will see, right after you create the new rails app:



Initialized empty Git repository in /Users/Snake/apps/vega/.git/
         run    git add -A from "."
         run    git commit -qm "rails_apps_composer: initial commit" from "."
      recipe  Running railsapps recipe...
    question  Install an example application for Rails 4.0?
          1)  Build a RailsApps starter application
          2)  Build a contributed application
          3)  I want to build my own application
   railsapps  Enter your selection: 3
      recipe  Running setup recipe...
       setup  Your operating system is darwin9.8.0.
       setup  You are using Ruby version 2.0.0.
       setup  You are using Rails version 4.0.0.
    question  Web server for development?
          1)  WEBrick (default)
          2)  Thin
          3)  Unicorn
          4)  Puma
       setup  Enter your selection: 1
    question  Web server for production?
          1)  Same as development
          2)  Thin
          3)  Unicorn
          4)  Puma
       setup  Enter your selection: 1
    question  Database used in development?
          1)  SQLite
          2)  PostgreSQL
          3)  MySQL
          4)  MongoDB
       setup  Enter your selection: 1
    question  Template engine?
          1)  ERB
          2)  Haml
          3)  Slim (experimental)
       setup  Enter your selection: 1
    question  Unit testing?
          1)  Test::Unit
          2)  RSpec
          3)  MiniTest
       setup  Enter your selection: 2
    question  Integration testing?
          1)  None
          2)  RSpec with Capybara
          3)  Cucumber with Capybara
          4)  Turnip with Capybara
          5)  MiniTest with Capybara
       setup  Enter your selection: 2
    question  Continuous testing?
          1)  None
          2)  Guard
       setup  Enter your selection: 1
    question  Fixture replacement?
          1)  None
          2)  Factory Girl
          3)  Machinist
          4)  Fabrication
       setup  Enter your selection: 2
    question  Front-end framework?
          1)  None
          2)  Twitter Bootstrap
          3)  Zurb Foundation
          4)  Skeleton
          5)  Just normalize CSS for consistent styling
       setup  Enter your selection: 2
    question  Twitter Bootstrap version?
          1)  Twitter Bootstrap (Less)
          2)  Twitter Bootstrap (Sass)
       setup  Enter your selection: 2
    question  Add support for sending email?
          1)  None
          2)  Gmail
          3)  SMTP
          4)  SendGrid
          5)  Mandrill
       setup  Enter your selection: 2
    question  Authentication?
          1)  None
          2)  Devise
          3)  OmniAuth
       setup  Enter your selection: 2
    question  Devise modules?
          1)  Devise with default modules
          2)  Devise with Confirmable module
          3)  Devise with Confirmable and Invitable modules
       setup  Enter your selection: 2
    question  Authorization?
          1)  None
          2)  CanCan with Rolify
       setup  Enter your selection: 2
    question  Use a form builder gem?
          1)  None
          2)  SimpleForm
       setup  Enter your selection: 2
    question  Install a starter app?
          1)  None
          2)  Home Page
          3)  Home Page, User Accounts
          4)  Home Page, User Accounts, Admin Dashboard
       setup  Enter your selection: 4

here are some messages from the installation. I will have to check them carefully:

First. Bootstrap requires some actions:

========================================================================
Be sure to have a copy of the Bootstrap stylesheet available on your
  application, you can get it on http://twitter.github.com/bootstrap.

  Inside your views, use the 'simple_form_for' with one of the Bootstrap form
  classes, '.form-horizontal', '.form-inline', '.form-search' or
  '.form-vertical', as the following:

    = simple_form_for(@user, html: {class: 'form-horizontal' }) do |form|



========================================================================

Some setup you must do manually if you haven't yet:

  1. Setup default url options for your specific environment. Here is an
     example of development environment:

       config.action_mailer.default_url_options = { :host => 'localhost:3000' }

     This is a required Rails configuration. In production it must be the
     actual host of your application

  2. Ensure you have defined root_url to *something* in your config/routes.rb.
     For example:

       root :to => "home#index"

  3. Ensure you have flash messages in app/views/layouts/application.html.erb.
     For example:

       <p class="notice"><%= notice %></p>
       <p class="alert"><%= alert %></p>

  4. If you are deploying Rails 3.1 on Heroku, you may want to set:

       config.assets.initialize_on_precompile = false

     On config/application.rb forcing your application to not access the DB
     or load models when precompiling your assets.

========================================================================