class Rails::AppBuilder

end
end
generate “rspec:install”
run “bundle install”
@generator.gem “rspec-rails”, group: [:development, :test]
def test
class CustomAppBuilder < Rails::AppBuilder
what those operations do so you can create another template action.
Gemfile, README, or JavaScript files, without needing to know exactly
This allows you to override entire operations, like the creation of the
generator.
generator without being forced to reverse the operations of the default
The application builder allows you to override elements of the application

def app

def app
  directory "app"
  empty_directory_with_keep_file "app/assets/images"
  keep_file  "app/controllers/concerns"
  keep_file  "app/models/concerns"
end

def bin

def bin
  directory "bin" do |content|
    "#{shebang}\n" + content
  end
  chmod "bin", 0755 & ~File.umask, verbose: false
end

def bin_when_updating

def bin_when_updating
  bin
end

def config

def config
  empty_directory "config"
  inside "config" do
    template "routes.rb" unless options[:updating]
    template "application.rb"
    template "environment.rb"
    template "cable.yml" unless options[:updating] || options[:skip_action_cable]
    template "puma.rb"   unless options[:updating]
    template "storage.yml" unless options[:updating] || skip_active_storage?
    directory "environments"
    directory "initializers"
    directory "locales" unless options[:updating]
  end
end

def config_target_version

def config_target_version
  defined?(@config_target_version) ? @config_target_version : Rails::VERSION::STRING.to_f
end

def config_when_updating

def config_when_updating
  action_cable_config_exist       = File.exist?("config/cable.yml")
  active_storage_config_exist     = File.exist?("config/storage.yml")
  rack_cors_config_exist          = File.exist?("config/initializers/cors.rb")
  assets_config_exist             = File.exist?("config/initializers/assets.rb")
  asset_manifest_exist            = File.exist?("app/assets/config/manifest.js")
  asset_app_stylesheet_exist      = File.exist?("app/assets/stylesheets/application.css")
  csp_config_exist                = File.exist?("config/initializers/content_security_policy.rb")
  permissions_policy_config_exist = File.exist?("config/initializers/permissions_policy.rb")
  @config_target_version = Rails.application.config.loaded_config_version || "5.0"
  config
  if !options[:skip_action_cable] && !action_cable_config_exist
    template "config/cable.yml"
  end
  if !skip_active_storage? && !active_storage_config_exist
    template "config/storage.yml"
  end
  if skip_sprockets? && skip_propshaft? && !assets_config_exist
    remove_file "config/initializers/assets.rb"
  end
  if skip_sprockets? && !asset_manifest_exist
    remove_file "app/assets/config/manifest.js"
  end
  if skip_sprockets? && !asset_app_stylesheet_exist
    remove_file "app/assets/stylesheets/application.css"
  end
  unless rack_cors_config_exist
    remove_file "config/initializers/cors.rb"
  end
  if options[:api]
    unless csp_config_exist
      remove_file "config/initializers/content_security_policy.rb"
    end
    unless permissions_policy_config_exist
      remove_file "config/initializers/permissions_policy.rb"
    end
  end
  if !skip_sprockets?
    insert_into_file "config/application.rb", %(require "sprockets/railtie"), after: /require\(["']rails\/all["']\)\n/
  end
end

def configru

def configru
  template "config.ru"
end

def credentials

def credentials
  return if options[:pretend] || options[:dummy_app]
  require "rails/generators/rails/credentials/credentials_generator"
  Rails::Generators::CredentialsGenerator.new([], quiet: options[:quiet]).add_credentials_file_silently
end

def database_yml

def database_yml
  template "config/databases/#{options[:database]}.yml", "config/database.yml"
end

def db

def db
  directory "db"
end

def db_when_updating

def db_when_updating
  path = File.expand_path("db/schema.rb", destination_root)
  if File.exist?(path)
    gsub_file("db/schema.rb", /ActiveRecord::Schema\.define/, "ActiveRecord::Schema[6.1].define")
  end
end

def gemfile

def gemfile
  template "Gemfile"
end

def gitattributes

def gitattributes
  template "gitattributes", ".gitattributes"
end

def gitignore

def gitignore
  template "gitignore", ".gitignore"
end

def lib

def lib
  empty_directory "lib"
  empty_directory_with_keep_file "lib/tasks"
  empty_directory_with_keep_file "lib/assets"
end

def log

def log
  empty_directory_with_keep_file "log"
end

def master_key

def master_key
  return if options[:pretend] || options[:dummy_app]
  require "rails/generators/rails/master_key/master_key_generator"
  master_key_generator = Rails::Generators::MasterKeyGenerator.new([], quiet: options[:quiet], force: options[:force])
  master_key_generator.add_master_key_file_silently
  master_key_generator.ignore_master_key_file_silently
end

def public_directory

def public_directory
  directory "public", "public", recursive: false
end

def rakefile

def rakefile
  template "Rakefile"
end

def readme

def readme
  copy_file "README.md", "README.md"
end

def ruby_version

def ruby_version
  template "ruby-version", ".ruby-version"
end

def storage

def storage
  empty_directory_with_keep_file "storage"
  empty_directory_with_keep_file "tmp/storage"
end

def system_test

def system_test
  empty_directory_with_keep_file "test/system"
  template "test/application_system_test_case.rb"
end

def test

def test
  empty_directory_with_keep_file "test/fixtures/files"
  empty_directory_with_keep_file "test/controllers"
  empty_directory_with_keep_file "test/mailers"
  empty_directory_with_keep_file "test/models"
  empty_directory_with_keep_file "test/helpers"
  empty_directory_with_keep_file "test/integration"
  template "test/channels/application_cable/connection_test.rb"
  template "test/test_helper.rb"
end

def tmp

def tmp
  empty_directory_with_keep_file "tmp"
  empty_directory_with_keep_file "tmp/pids"
  empty_directory "tmp/cache"
  empty_directory "tmp/cache/assets"
end

def user_default_branch

def user_default_branch
  @user_default_branch ||= `git config init.defaultbranch`
end

def vendor

def vendor
  empty_directory_with_keep_file "vendor"
end

def version_control

def version_control
  if !options[:skip_git] && !options[:pretend]
    run "git init", capture: options[:quiet], abort_on_failure: false
    if user_default_branch.strip.empty?
      `git symbolic-ref HEAD refs/heads/main`
    end
  end
end