ruby-on-rails – 未定义的方法“_index_path”form_for问题

车型/ equipment.rb

class Equipment < ActiveRecord::Base
  attr_accessible :name,:tracking_number
  validates :tracking_number,:presence => true,:uniqueness => { :case_sensitive => true }
end

控制器/ equipments_controllers.rb

class EquipmentsController < ApplicationController
  def index
    @equipments = Equipment.paginate(:page => params[:page])
  end

  def new
    @equipment  = Equipment.new
  end

end

视图/设备/ new.html.rb

<h1>Add an equipment</h1>
<%= form_for (@equipment) do |f| %>
  <%= render 'shared/error_messages',:object => f.object %>
  <div class="field">
    <%= f.label :name %> <br />
    <%= f.text_field :name %>
  </div>
  <div class="field">
    <%= f.label :tracking_number %><br />
    <%= f.text_field :tracking_number %>
  </div>
  <%= f.submit "Add" %>
<% end  %>

的routes.rb

EquipmentTracking::Application.routes.draw do
  root :to => "equipments#index"
  resources :equipments
end

我看不到任何错误,但输出如下：

NoMethodError in Equipments#new
Showing /opt/ror/equipment_tracking/app/views/equipments/new.html.erb where line #2 raised:
undefined method `equipment_index_path' for #<#<Class:0xb6725a2c>:0xb6724640>

如果我把它改成了

<%= form_for (:equipment) do |f| %>

它似乎工作正常.我也确定静态变量@equipment从此开始传递

<%= @equipment %>

回报

#<Equipment:0xb685ece0>

我在这里亏了我刚刚完成了我在跟踪railstutorial.org的书时所做的一切,我能够完成这本书.