A simple Thor script for generating a Twitter Bootstrap Rails app with some basic options

bootstrap-app

#!/usr/bin/env ruby

require 'thor'

class BootstrapApp < Thor
  include Thor::Actions
  
  desc "create", "Create a Twitter Bootstrap app"
  method_option :database, aliases: '-d', type: :string,  desc: 'The database adapter to use: sqlite3 oracle mysql2 etc.', default: 'sqlite3'
  method_option :test,     aliases: '-t', type: :string,  desc: 'The test framework to use: test-unit rspec-rails etc.', default: 'rspec-rails'
  method_option :verbose,  aliases: '-v', type: :boolean, desc: 'Verbose output', default: true
  method_option :simple_form, aliases: '-s', type: :boolean, desc: 'Use Simple Form or not', default: true
  method_option :haml,     aliases: '-h', type: :boolean, desc: 'Use Haml or not', default: true
  method_option :datatables, aliases:  '-j', type: :boolean, desc: 'Use AjaxDatatablesRails', default: false
  def create(app_name)
    say "Creating app: #{app_name}"
    run rails_creation(app_name, options)
    inside app_name, verbose: options[:verbose] do
      insert_into_file "Gemfile", after: /jquery-rails.*\n/ do
        gemfile_additions
      end
      run_generators
    end
  end 

  private

  def self.source_root
    File.dirname(__FILE__)
  end 

  def not_test_unit? option
    option !~ /unit/i
  end

  def rails_creation name, options
    "rails new #{name} -d #{options[:database]} #{'--skip-test-unit' if not_test_unit?(options[:test])} --skip-bundle"
  end

  def run_generators
    run "bundle install"
    run "rails g rspec:install"                  if options[:test] =~ /rspec/
    run "rails g simple_form:install --bootstrap" if options[:simple_form]
    run "rails g bootstrap:install"
  end

  def gemfile_additions
    gemfile = <<-GEMS
      gem 'twitter-bootstrap-rails'
      #{"gem 'haml-rails'"              if options[:haml]}
      #{"gem 'simple_form'"             if options[:simple_form]} 
      #{"gem 'jquery-datatables-rails'" if options[:datatables]} 
      #{"gem 'ajax-datatables-rails'"   if options[:datatables]} 
      group :test, :development do
        #{"gem '#{options[:test]}'"     if not_test_unit?(options[:test])}
      end
    GEMS
    gemfile.gsub(/^#{gemfile[/\A\s*/]}/, '')
  end
end

BootstrapApp.start