[Rails5] Update files by `rails app:update`

bin/rails

 #!/usr/bin/env ruby
-begin
+
+# Remove this block when upgraded to rails 5.0.
+unless %w[1 true].include?(ENV["RAILS5"])
+  begin
     load File.expand_path('../spring', __FILE__)
-rescue LoadError => e
+  rescue LoadError => e
     raise unless e.message.include?('spring')
+  end
 end
-APP_PATH = File.expand_path('../../config/application', __FILE__)
+
+APP_PATH = File.expand_path('../config/application', __dir__)
 require_relative '../config/boot'
 require 'rails/commands'

bin/rake

 #!/usr/bin/env ruby
-begin
+
+# Remove this block when upgraded to rails 5.0.
+unless %w[1 true].include?(ENV["RAILS5"])
+  begin
     load File.expand_path('../spring', __FILE__)
-rescue LoadError => e
+  rescue LoadError => e
     raise unless e.message.include?('spring')
+  end
 end
+
 require_relative '../config/boot'
 require 'rake'
 Rake.application.run

bin/setup

 #!/usr/bin/env ruby
-require 'pathname'
+
+def rails5?
+  %w[1 true].include?(ENV["RAILS5"])
+end
+
+require "pathname"
 
 # path to your application root.
-APP_ROOT = Pathname.new File.expand_path('../../',  __FILE__)
+APP_ROOT = Pathname.new File.expand_path("../../", __FILE__)
+
+if rails5?
+  def system!(*args)
+    system(*args) || abort("\n== Command #{args} failed ==")
+  end
+end
 
 Dir.chdir APP_ROOT do
   # This script is a starting point to setup your application.
   # Add necessary setup steps to this file:
 
   puts "== Installing dependencies =="
+
+  if rails5?
+    system! "gem install bundler --conservative"
+    system("bundle check") || system!("bundle install")
+  else
     system "gem install bundler --conservative"
     system "bundle check || bundle install"
+  end
 
   # puts "\n== Copying sample files =="
   # unless File.exist?("config/database.yml")
-  #   system "cp config/database.yml.sample config/database.yml"
+  #   cp "config/database.yml.sample", "config/database.yml"
   # end
 
   puts "\n== Preparing database =="
+
+  if rails5?
+    system! "bin/rails db:setup"
+  else
     system "bin/rake db:reset"
+  end
 
   puts "\n== Removing old logs and tempfiles =="
+
+  if rails5?
+    system! "bin/rails log:clear tmp:clear"
+  else
     system "rm -f log/*"
     system "rm -rf tmp/cache"
+  end
 
   puts "\n== Restarting application server =="
+
+  if rails5?
+    system! "bin/rails restart"
+  else
     system "touch tmp/restart.txt"
+  end
 end

bin/update

+#!/usr/bin/env ruby
+require 'pathname'
+require 'fileutils'
+include FileUtils
+
+# path to your application root.
+APP_ROOT = Pathname.new File.expand_path('../../', __FILE__)
+
+def system!(*args)
+  system(*args) || abort("\n== Command #{args} failed ==")
+end
+
+chdir APP_ROOT do
+  # This script is a way to update your development environment automatically.
+  # Add necessary update steps to this file.
+
+  puts '== Installing dependencies =='
+  system! 'gem install bundler --conservative'
+  system('bundle check') || system!('bundle install')
+
+  puts "\n== Updating database =="
+  system! 'bin/rails db:migrate'
+
+  puts "\n== Removing old logs and tempfiles =="
+  system! 'bin/rails log:clear tmp:clear'
+
+  puts "\n== Restarting application server =="
+  system! 'bin/rails restart'
+end

config/boot.rb

-require 'rubygems'
+def rails5?
+  %w[1 true].include?(ENV["RAILS5"])
+end
 
-# Set up gems listed in the Gemfile.
-ENV['BUNDLE_GEMFILE'] ||= File.expand_path('../../Gemfile', __FILE__)
+require 'rubygems' unless rails5?
+
+gemfile = rails5? ? "Gemfile.rails5" : "Gemfile"
+ENV['BUNDLE_GEMFILE'] ||= File.expand_path("../#{gemfile}", __dir__)
 
+# Set up gems listed in the Gemfile.
 require 'bundler/setup' if File.exist?(ENV['BUNDLE_GEMFILE'])

config/environment.rb

 # Load the rails application
-require File.expand_path('../application', __FILE__)
+
+# Remove this condition when upgraded to rails 5.0.
+if %w[1 true].include?(ENV["RAILS5"])
+  require_relative 'application'
+else
+  require File.expand_path('../application', __FILE__)
+end
 
 # Initialize the rails application
 Rails.application.initialize!

config/environments/production.rb

@@ -9,7 +9,11 @@ Rails.application.configure do
   config.action_controller.perform_caching = true
 
   # Disable Rails's static asset server (Apache or nginx will already do this)
+  if Gitlab.rails5?
+    config.public_file_server.enabled = false
+  else
     config.serve_static_files = false
+  end
 
   # Compress JavaScripts and CSS.
   config.assets.js_compressor = :uglifier

config/environments/test.rb

@@ -18,7 +18,13 @@ Rails.application.configure do
 
   # Configure static asset server for tests with Cache-Control for performance
   config.assets.compile = false if ENV['CI']
+
+  if Gitlab.rails5?
+    config.public_file_server.enabled = true
+  else
     config.serve_static_files = true
+  end
+
   config.static_cache_control = "public, max-age=3600"
 
   # Show full error reports and disable caching

config/initializers/application_controller_renderer.rb

+# Remove this `if` condition when upgraded to rails 5.0.
+# The body must be kept.
+if Gitlab.rails5?
+  # Be sure to restart your server when you modify this file.
+
+  # ActiveSupport::Reloader.to_prepare do
+  #   ApplicationController.renderer.defaults.merge!(
+  #     http_host: 'example.org',
+  #     https: false
+  #   )
+  # end
+end

config/initializers/new_framework_defaults.rb

+# Remove this `if` condition when upgraded to rails 5.0.
+# The body must be kept.
+if Gitlab.rails5?
+  # Be sure to restart your server when you modify this file.
+  #
+  # This file contains migration options to ease your Rails 5.0 upgrade.
+  #
+  # Once upgraded flip defaults one by one to migrate to the new default.
+  #
+  # Read the Guide for Upgrading Ruby on Rails for more info on each option.
+
+  Rails.application.config.action_controller.raise_on_unfiltered_parameters = true
+
+  # Enable per-form CSRF tokens. Previous versions had false.
+  Rails.application.config.action_controller.per_form_csrf_tokens = false
+
+  # Enable origin-checking CSRF mitigation. Previous versions had false.
+  Rails.application.config.action_controller.forgery_protection_origin_check = false
+
+  # Make Ruby 2.4 preserve the timezone of the receiver when calling `to_time`.
+  # Previous versions had false.
+  ActiveSupport.to_time_preserves_timezone = false
+
+  # Require `belongs_to` associations by default. Previous versions had false.
+  Rails.application.config.active_record.belongs_to_required_by_default = false
+
+  # Do not halt callback chains when a callback returns false. Previous versions had true.
+  ActiveSupport.halt_callback_chains_on_return_false = true
+end

config/spring.rb

+%w(
+  .ruby-version
+  .rbenv-vars
+  tmp/restart.txt
+  tmp/caching-dev.txt
+).each { |path| Spring.watch(path) }