使用：

1. gem 'aasm'

2.設(shè)置一個初始狀態(tài)

class Customer < ActiveRecord::Base
    include AASM

    aasm  do
        state :published, initial => true
        state :checked_success
        state :checked_faild
    end
end

3.狀態(tài)轉(zhuǎn)換
初始狀態(tài)為published(未審核)，審核通過，則為checked，審核未通過，則為denied。

  class Customer < ActiveRecord::Base
    include AASM

    aasm  do
        state :published, initial => true
        state :checked_success
        state :checked_faild
        state :deleted
        
        #正在審核
        event :on_checked do
              translation :from => :published, :to => :on_checking
         end

          #審核通過
          event :checked_succeed do 
              translation :from => :on_checking, :to  => :finished
          end
          
          #刪除該記錄
          event :deleted do
              translation :from => [:checked, :finished], :to => :sleeping
          end

    end
end

觸發(fā)切換事件執(zhí)行的條件 after_commit: :事件