如何在更新对象后总是将状态更改为awaiting_review？

Question

我已经在应用以下状态机：

class Cv < ActiveRecord::Base 
    include Workflow 
    workflow do 
    state :new do 
     event :submit, :transitions_to => :awaiting_review 
    end 
    state :awaiting_review do 
     event :review, :transitions_to => :being_reviewed 
    end 
    state :being_reviewed do 
     event :accept, :transitions_to => :accepted 
     event :reject, :transitions_to => :rejected 
    end 
    state :accepted 
    state :rejected 
    end 

    def submit 
    halt unless valid? 
    end 
end 

# cvs_controller.rb 
def update 
    @cv = Cv.find(params[:id]) 
    if @cv.update_attributes(params[:cv]) 
    # @cv.back_to_review! 
    redirect_to root_path 
    end 
end 

我想移动状态awaiting_review总是后，我更新的对象。

所以我应该在每个状态块中添加event :back_to_review!, :transitions_to => :awaiting_reviewed ??

我使用这种宝石：https://github.com/geekq/workflow

Answer 1

你可以尝试这样的：

编辑：按照您的评论

before_save do |w| 
    w.transition_to_awaiting_review if w.changes['attr_name'] 
end 

event :transtion_to_awaiting_review do 
    transition all => :awaiting_review 
end 

这只会更新时，模型的特定属性变化。