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常數

DEFAULT_ALIASES = { rails: { actions: "-a", orm: "-o", javascripts: ["-j", "--js"], resource_controller: "-c", scaffold_controller: "-c", stylesheets: "-y", template_engine: "-e", test_framework: "-t" }, test_unit: { fixture_replacement: "-r", } }
 
DEFAULT_OPTIONS = { rails: { api: false, assets: true, force_plural: false, helper: true, integration_tool: nil, orm: false, resource_controller: :controller, resource_route: true, scaffold_controller: :scaffold_controller, system_tests: nil, test_framework: nil, template_engine: :erb } }
 

類別公開方法

api_only!()

設定僅限 API 應用程式的產生器。它基本上隱藏了所有通常與瀏覽器相關的內容,例如資源檔和session遷移產生器,並完全停用輔助方法和資源檔,以便 scaffold 等產生器不會建立它們。

# File railties/lib/rails/generators.rb, line 116
def api_only!
  hide_namespaces "assets", "helper", "css", "js"

  options[:rails].merge!(
    api: true,
    assets: false,
    helper: false,
    template_engine: nil
  )

  options[:mailer] ||= {}
  options[:mailer][:template_engine] ||= :erb
end

fallbacks()

保存已設定的產生器後備方案。如果插件開發人員希望產生器群組在缺少產生器的情況下 fallback 到另一個群組,則可以新增後備方案。

例如,shoulda 被認為是一個 test_framework,並且是 test_unit 的擴展。但是,大多數 shoulda 產生器都與 test_unit 產生器相似。

然後,Shoulda 可以通過新增後備方案來告知產生器在某些產生器不可用時搜尋 test_unit 產生器

Rails::Generators.fallbacks[:shoulda] = :test_unit
# File railties/lib/rails/generators.rb, line 108
def fallbacks
  @fallbacks ||= {}
end

help(command = "generate")

顯示說明訊息以及可用的產生器。

# File railties/lib/rails/generators.rb, line 170
def help(command = "generate")
  puts "Usage:"
  puts "  bin/rails #{command} GENERATOR [args] [options]"
  puts
  puts "General options:"
  puts "  -h, [--help]     # Print generator's options and usage"
  puts "  -p, [--pretend]  # Run but do not make any changes"
  puts "  -f, [--force]    # Overwrite files that already exist"
  puts "  -s, [--skip]     # Skip files that already exist"
  puts "  -q, [--quiet]    # Suppress status output"
  puts
  puts "Please choose a generator below."
  puts

  print_generators
end

hidden_namespaces()

返回隱藏的產生器命名空間陣列。產生器命名空間可能由於各種原因而被隱藏。有些命名空間有別名,例如「rails:migration」,可以使用較短的「migration」來呼叫。

# File railties/lib/rails/generators.rb, line 134
def hidden_namespaces
  @hidden_namespaces ||= begin
    orm      = options[:rails][:orm]
    test     = options[:rails][:test_framework]
    template = options[:rails][:template_engine]

    [
      "rails",
      "resource_route",
      "#{orm}:migration",
      "#{orm}:model",
      "#{test}:controller",
      "#{test}:helper",
      "#{test}:integration",
      "#{test}:system",
      "#{test}:mailer",
      "#{test}:model",
      "#{test}:scaffold",
      "#{test}:view",
      "#{test}:job",
      "#{template}:controller",
      "#{template}:scaffold",
      "#{template}:mailer",
      "action_text:install",
      "action_mailbox:install",
      "devcontainer"
    ]
  end
end

hide_namespace(*namespaces)

hide_namespaces(*namespaces)

也稱為:hide_namespace
# File railties/lib/rails/generators.rb, line 164
def hide_namespaces(*namespaces)
  hidden_namespaces.concat(namespaces)
end

invoke(namespace, args = ARGV, config = {})

接收命名空間、參數和行為以調用產生器。它被用作 generate、destroy 和 update 命令的預設入口點。

# File railties/lib/rails/generators.rb, line 261
      def invoke(namespace, args = ARGV, config = {})
        names = namespace.to_s.split(":")
        if klass = find_by_namespace(names.pop, names.any? && names.join(":"))
          args << "--help" if args.empty? && klass.arguments.any?(&:required?)
          klass.start(args, config)
          run_after_generate_callback if config[:behavior] == :invoke
        else
          options = sorted_groups.flat_map(&:last)
          error = Command::CorrectableNameError.new("Could not find generator '#{namespace}'.", namespace, options)

          puts <<~MSG
            #{error.detailed_message}
            Run `bin/rails generate --help` for more options.
          MSG
          exit 1
        end
      end

print_generators()

# File railties/lib/rails/generators.rb, line 192
def print_generators
  sorted_groups.each { |b, n| print_list(b, n) }
end

public_namespaces()

# File railties/lib/rails/generators.rb, line 187
def public_namespaces
  lookup!
  subclasses.map(&:namespace)
end

sorted_groups()

# File railties/lib/rails/generators.rb, line 196
def sorted_groups
  namespaces = public_namespaces
  namespaces.sort!

  groups = Hash.new { |h, k| h[k] = [] }
  namespaces.each do |namespace|
    base = namespace.split(":").first
    groups[base] << namespace
  end

  rails = groups.delete("rails")
  rails.map! { |n| n.delete_prefix("rails:") }
  rails.delete("app")
  rails.delete("plugin")
  rails.delete("encrypted_file")
  rails.delete("encryption_key_file")
  rails.delete("master_key")
  rails.delete("credentials")
  rails.delete("db:system:change")

  hidden_namespaces.each { |n| groups.delete(n.to_s) }

  [[ "rails", rails ]] + groups.sort.to_a
end

類別私有方法

command_type()

# File railties/lib/rails/generators.rb, line 306
def command_type # :doc:
  @command_type ||= "generator"
end

file_lookup_paths()

# File railties/lib/rails/generators.rb, line 314
def file_lookup_paths # :doc:
  @file_lookup_paths ||= [ "{#{lookup_paths.join(',')}}", "**", "*_generator.rb" ]
end

lookup_paths()

# File railties/lib/rails/generators.rb, line 310
def lookup_paths # :doc:
  @lookup_paths ||= %w( rails/generators generators )
end

print_list(base, namespaces)

# File railties/lib/rails/generators.rb, line 285
def print_list(base, namespaces) # :doc:
  namespaces = namespaces.reject { |n| hidden_namespaces.include?(n) }
  super
end