C

• configure

I

• inherited,
• instance

R

• respond_to?

執行個體公用方法

# File railties/lib/rails/railtie/configurable.rb, line 25
def configure(&block)
  class_eval(&block)
end

# File railties/lib/rails/railtie/configurable.rb, line 13
def inherited(base)
  raise "You cannot inherit from a #{superclass.name} child"
end

# File railties/lib/rails/railtie/configurable.rb, line 17
def instance
  @instance ||= new
end

# File railties/lib/rails/railtie/configurable.rb, line 21
def respond_to?(*args)
  super || instance.respond_to?(*args)
end