Rails: 如何在另一个控制器中访问 self.method？

Rails: How to access self.method in another controller?

class Foo1
  def self.foo1action(cake)
    # returns user object
  end
end

class Foo2
  def foo2action
    user = # here i want call foo1action
  end
end

如何在 foo2action 中调用 foo1action？这是基于 rails 框架。我知道继承是一种方式...我想知道其他方式...

class Foo1
  def self.foo_1_action(cake)
  end
end

class Foo2
  def foo_2_action
    user = ::Foo1.foo_1_action(some_cake)
  end
end