module ActiveSupport::Autoload

Active Support Autoload¶ ↑

Autoload and eager load conveniences for your library.

This module allows you to define autoloads based on Rails conventions (i.e. no need to define the path it is automatically guessed based on the filename) and also define a set of constants that needs to be eager loaded:

module MyLib
  extend ActiveSupport::Autoload

  autoload :Model

  eager_autoload do
    autoload :Cache
  end
end

Then your library can be eager loaded by simply calling:

MyLib.eager_load!

Public Instance Methods

autoload (const_name, path = @_at_path)

Calls superclass method

# File activesupport/lib/active_support/dependencies/autoload.rb, line 30
def autoload(const_name, path = @_at_path)
  unless path
    full = [name, @_under_path, const_name.to_s].compact.join("::")
    path = Inflector.underscore(full)
  end

  if @_eager_autoload
    @_eagerloaded_constants ||= []
    @_eagerloaded_constants << const_name
  end

  super const_name, path
end

autoload_at (path) { || ... }

# File activesupport/lib/active_support/dependencies/autoload.rb, line 51
def autoload_at(path)
  @_at_path, old_path = path, @_at_path
  yield
ensure
  @_at_path = old_path
end

autoload_under (path) { || ... }

# File activesupport/lib/active_support/dependencies/autoload.rb, line 44
def autoload_under(path)
  @_under_path, old_path = path, @_under_path
  yield
ensure
  @_under_path = old_path
end

eager_autoload () { || ... }

# File activesupport/lib/active_support/dependencies/autoload.rb, line 58
def eager_autoload
  old_eager, @_eager_autoload = @_eager_autoload, true
  yield
ensure
  @_eager_autoload = old_eager
end

eager_load! ()

# File activesupport/lib/active_support/dependencies/autoload.rb, line 65
def eager_load!
  if @_eagerloaded_constants
    @_eagerloaded_constants.each { |const_name| const_get(const_name) }
    @_eagerloaded_constants = nil
  end
end