Ruby on rails 如何访问特定rails模型的acts\u as\u state\u机器状态集合？

是否可以访问给定模型的状态集合：

  aasm_states
  aasm_states_for_select

课堂对话 包括原子吸收光谱法

aasm_initial_state :unread

aasm_state :unread
aasm_state :read
aasm_state :closed

aasm_event :view do
  transitions :to => :read, :from => [:unread]
end

aasm_event :close do
  transitions :to => :closed, :from => [:read, :unread]
end

结束

我希望能够获得一系列状态，如：

['unread', 'read', 'closed']

---

这可能吗？

AASM gem有两个类方法，用于返回给定模型的状态集合：

  aasm_states
  aasm_states_for_select

例如：

class Note < ActiveRecord::Base
  aasm_initial_state :unread

  aasm_state :unread
  aasm_state :read
  aasm_state :closed

  aasm_event :view do
    transitions :to => :read, :from => [:unread]
  end

  aasm_event :close do
    transitions :to => :closed, :from => [:read, :unread]
  end 
end

> Note.aasm_states
> Note.aasm_states_for_select

class注释:read，：from=>[：unread]
结束
aasm_事件：关闭do
转换：到=>：已关闭，：从=>[：已读，：未读]
结束
结束
>注：aasm_州
>注：aasm表示“选择”