如何訪問特定導軌模型的acts_as_state_machine狀態集合？

Question

是否有可能訪問狀態的集合給定模型：

類談話 包括AASM

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 

末

我希望能夠得到國家的數組一樣：

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

這可能嗎？

Answer 1

的AASM寶石有兩個類方法，返回狀態的集合爲一個給定的模型：

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