ruby-on-rails – 有人可以为pluginaweek – statemachine提供一

class Ticket < ActiveRecord::Base
  attr_accessible :name,:description
  attr_accessible :state_event
  validates :name,:presence => true

  state_machine :initial => :new do

    event :accept do 
      transition [:new,:feedback] => :accepted
    end

    event :decline do
      transition :new => :declined
    end

    event :feedback do
      transition [:new,:accepted] => :feedbacked
    end

    event :solve do
      transition [:accepted,:feedback] => :solved
    end
  end
end

获取表单中所有可能的转换

<%= f.collection_select :state_event,@ticket.state_transitions,:event,:human_to_name,:include_blank => @ticket.human_state_name %>

获取票证状态：<％= ticket.state％>

获取所有可能的票证转换作为链接：

<% ticket.state_transitions.each do |transition| %>
    <%= link_to transition.event,ticket_path(ticket,ticket: {:state_event => transition.event}),:method => :put %>
<% end %>

列出要在控制器中过滤的所有可能转换

<ul>
  <li class="<%= 'active' if params[:state].blank? %>"><%= link_to 'All',tickets_path %></li>
  <% Ticket.state_machine.states.each do |state| %>
    <li class="<%= 'active' if params[:state] == state.name.to_s  %>">
      <%= link_to state.name,tickets_path(:state => state.name) %>
    </li>
  <% end %>
</ul>

class TicketsController extends ApplicationController
  ...
  def index
    @tickets = Ticket.where("state = ?",params[:state])
    ...