Rails app setup cheat sheet

Rails new app Cheat sheet

1. Install RVM
$ \curl -L https://get.rvm.io | bash -s stable --ruby

2. Install Ruby
$ rvm install ruby
$ rvm --default use ruby-2.3.3

3. Install Javascript runtime
$ sudo apt-get install nodejs

4. Check gem manager is installed
$ gem -v

5. Update gem manager if need be
$ gem update --system

6. Disable downloading of gem documentation (Nobody uses installed documentation)
$ echo "gem: --no-document" >> ~/.gemrc
*Adds the line gem: --no-document to the hidden .gemrc file in your home dir.

7. Install bundler
$ gem install bundler

8. Install Nokogiri gem in the RVM global gemset:
$ gem install nokogiri

9. Install Rails into project-specific gemsets, for each project to have the appropriate version of Rails.
Make a gemset just for the current stable release:
$ rvm use ruby-2.3.3@rails5.0 --create

10. Install the latest stable version
$ gem install rails
$ rails -v

11. Install a specific rails version
$ gem install rails --version=3.2.18
$ rails -v

12. Here’s how to create a project-specific gemset, installing Rails, and creating a new application.
$ mkdir myapp
$ cd myapp
$ rvm use ruby-2.3.3@myapp --ruby-version --create
$ gem install rails
$ rails new .


  * Popular options;
    --database=postgresql  # Preconfigure for PostgreSQL database
    -T                     # Skip Test::Unit files
    --api                  # API only app

13. Set up git
$ git init
$ git add .
$ git commit -m "Initial commit"

14. Set Ruby version in Gemfile
ruby '2.3.3'

15. Set up preferred test and development gems

  group :development, :test do
    gem 'rspec-rails'
  end

  group :test do
    gem 'database_cleaner'
    gem 'factory_girl_rails'
    gem 'faker' #some older RubySnacks reference 'ffaker'
    gem 'simple_bdd'
    gem 'shoulda-matchers'
  end

16. Install the gems
$ bundle

17. Edit config/database.yml with preferred database and database names

18. Create database
$ rails db:create  #rake db:create still works too

19. Install rspec
$ rails generate rspec:install

20. Commit set up 
$ git add .
$ git commit -m "Set up app with development gems, rspec, and pg"