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Rails





Routing

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Example

Create application
$ rails new railsapp -d sqlite3 --skip-test-unit

Done in 8.20s.
Webpacker successfully installed 🎉 🍰

$ grep '^gem' Gemfile
gem 'rails', '~> 6.0.2', '>= 6.0.2.1'
gem 'sqlite3', '~> 1.4'
gem 'puma', '~> 4.1'
gem 'sass-rails', '>= 6'
gem 'webpacker', '~> 4.0'
gem 'turbolinks', '~> 5'
gem 'jbuilder', '~> 2.7'
gem 'bcrypt', '~> 3.1.7'
gem 'bootsnap', '>= 1.4.2', require: false
gem 'rails-i18n'
gem 'kaminari'
gem 'date_validator'
gem 'valid_email2'
gem 'nokogiri'
gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]


check yarn

$ yarn
yarn install v1.22.0
[1/4] Resolving packages...
success Already up-to-date.
Done in 0.96s.



$ bin/bundle


$ grep -v '^#' config/database.yml
default: &default
  adapter: sqlite3
  pool: <%= ENV.fetch("RAILS_MAX_THREADS") { 5 } %>
  timeout: 5000

development:
  <<: *default
  database: db/development.sqlite3
  
test:
  <<: *default
  database: db/test.sqlite3

production:
  <<: *default
  database: db/production.sqlite3

  
$ bin/rails db:create
Created database 'db/development.sqlite3'
Created database 'db/test.sqlite3'


$ cat config/application.rb
require_relative 'boot'

require 'rails/all'

# Require the gems listed in Gemfile, including any gems
# you've limited to :test, :development, or :production.
Bundler.require(*Rails.groups)

module RailsApp
  class Application < Rails::Application
    # Initialize configuration defaults for originally generated Rails version.
	config.load_defaults 6.0
	
	# Settings in config/environments/* take precedence over those specified here.
	# Application configuration can go into files in config/intializers
	# -- all .rb files in that directory are automatically loaded after loading
	# the framework and any gems in your application.
	
	# added
	config.time_zone = 'Tokyo'
	config.i18n.load_path += Dir[Rails.root.join("config", "locales", "**", "*.{rb,yml}").to_s]
	config.i18n.default_locale = :ja
	
	config.generators do |g|
	  g.skip_routes true
	  g.helper false
	  g.assets false
	  g.test_framework :rspec
	  g.controller_specs false
	  g.view_spec false
	end
  end
end


Run

$ bin/rails server --binding=192.168.1.2 --port=3001
or bin/rails s -b 192.168.1.2 -p 3001

=> Booting Puma
=> Rails 6.0.2.1 application starting in development
=> Run `rails server --help` for more startup options
Puma starting in single mode...
* Version 4.3.3 (ruby 2.6.5-p114), codename: Mysterious Traveller
* Min threads: 5, max threads: 5
* Environment: development
* Listening on tcp://192.168.1.2:3001
Use Ctrl-C to stop
 






$ bin/rails g rspec:install
Running via Spring preloader in process 6755
      create  .rspec
	  create  spec
	  create  spec/spec_helper.rb
	  create  spec/rails_helper.rb


$ cat spec/rails_helper.rb
# This file is copied to spec/ when you run 'rails generate rspec:install'
require 'spec_helper'
ENV['RAILS_ENV'] ||= 'test'

require File.expand_path('../config/environment', __dir__)

# Prevent database truncation if the environment is production
abort("The Rails environment is running in production mode!") if Rails.env.production?
require 'rspec/rails'
# Add additional requires below this line. Rails is not loaded until this point!

# Requires supporting ruby files with custom matchers and macros, etc, in
# spec/support/ and its subdirectories. Files matching `spec/**/*_spec.rb` are 
# run as spec files by default. This means that files in spec/support that end 
# in _spec.rb will both be required and run as specs, causing the specs to be 
# run twice. It is recommended that you do not name files matching this glob to 
# end with _spec.rb. You can configure this pattern with the --pattern
# option on the command line or in ~/.rspec, .rspec or `.rspec-local`.
#
# The following line is provided for convenience purposes. It has the downside 
# of increasing the boot-up time by auto-requiring all files in the support 
# directory. Alternatively, in the individual `*_spec.rb` files, manually 
# require only the support files necessary.
#
# Dir[Rails.root.join('spec', 'support', '**', '*.rb')].each { |f| require f }

# Checks for pending migrations and applies them before tests are run.
# If you are not using ActiveRecord, you can remove these lines.
begin
  ActiveRecord::Migration.maintain_test_schema!
rescue ActiveRecord::PendingMigrationError => e
  puts e.to_s.strip
  exit 1
end
RSpec.configure do |config|
 # Remove this line if you're not using ActiveRecord or ActiveRecord fixtures
 config.fixture_path = "#{::Rails.root}/spec/fixtures"
 
 # If you're not using ActiveRecord, or you'd prefer not to run each of your
 # examples within a transaction, remove the following line or assign false
 # instead of true.
 config.use_transactional_fixtures = true
 
 # RSpec Rails can automatically mix in different behaviours to your tests
 # based on their file location, for example enabling you to call `get` and
 # `post` in specs under `spec/controllers`.
 #
 # You can disable this behaviour by removing the line below, and instead
 # explicitly tag your specs with their type, e.g.:
 #
 #     RSpec.describe UsersController, :type => :controller do
 #       # ...
 #     end
 #
 # The different available types are documented in the features, such as in
 # https://relishapp.com/rspec/rspec-rails/docs
 config.infer_spec_type_from_file_location!
 
 # Filter lines from Rails gems in backtraces.
 config.filter_rails_from_backtrace!
 # arbitrary gems may also be filtered via:
 # config.filter_gems_from_backtrace("gem name")
end


new spec
$ mkdir spec/test00
$ vi spec/test00/string_spec.rb
$ cat spec/test00/string_spec.rb
require "spec_helper"

describe String do
  describe "#<<" do
    example "add" do
	  s = "hogehoge"
	  s << "fugafuga"
	  expect(s.size).to eq(16)
	end
  end
end

$ rspec spec/test00/string_spec.rb
.

Finished in 0.00288 seconds (files took 0.13047 seconds to load)
1 example, 0 failures
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