loadable_constants_for_path

# File activesupport/lib/active_support/dependencies.rb, line 144
  def loadable_constants_for_path(path, bases = load_paths)
    path = $1 if path =~ /\A(.*)\.rb\Z/
    expanded_path = File.expand_path(path)

    bases.collect do |root|
      expanded_root = File.expand_path(root)
      next unless %r{\A#{Regexp.escape(expanded_root)}(/|\\)} =~ expanded_path

      nesting = expanded_path[(expanded_root.size)..-1]
      nesting = nesting[1..-1] if nesting && nesting[0] == ?/
      next if nesting.blank?

      [
        nesting.camelize,
        # Special case: application.rb might define ApplicationControlller.
        ('ApplicationController' if nesting == 'application')
      ]
    end.flatten.compact.uniq
  end