Question

我在Rails中一直在努力解决这类问题。我正在尝试为给定城市创建统计记录。我想我不需要粘贴我的模特？以下是错误，URL，视图和控制器代码。

这是我的错误：

NoMethodError in Statistics#new
Showing new.html.haml where line #2 raised:
undefined method `statistics_path' for #<#<Class:0x007faf5e172928>:0x007faf5e717ef0>

我走的路是：

http://127.0.0.1:3000/cities/1/statistics/new

路线：

city_statistics GET    /cities/:city_id/statistics(.:format)          statistics#index
                         POST   /cities/:city_id/statistics(.:format)          statistics#create
  new_city_statistic GET    /cities/:city_id/statistics/new(.:format)      statistics#new
 edit_city_statistic GET    /cities/:city_id/statistics/:id/edit(.:format) statistics#edit
      city_statistic GET    /cities/:city_id/statistics/:id(.:format)      statistics#show
                         PUT    /cities/:city_id/statistics/:id(.:format)      statistics#update
                         DELETE /cities/:city_id/statistics/:id(.:format)      statistics#destroy
               cities GET    /cities(.:format)                                  cities#index
                         POST   /cities(.:format)                                  cities#create
            new_city GET    /cities/new(.:format)                              cities#new
           edit_city GET    /cities/:id/edit(.:format)                         cities#edit
                city GET    /cities/:id(.:format)                              cities#show
                         PUT    /cities/:id(.:format)                              cities#update
                         DELETE /cities/:id(.:format)                              cities#destroy

routes.rb:

resources :cities do
   resources :statistics
end

routes.rb:

控制器：

def new
  @statistic = Statistic.new

  respond_to do |format|
    format.html # new.html.haml
    format.json { render :json => @statistic }
  end
end

查看：

%legend New Stat
= form_for(@statistic) do |f| ###### ERROR HERE #######
  = f.label :city_id
  = f.text_field :city_id
  .actions
    = f.submit "Add", :id => "add-statistic", :class => "btn btn-primary"

编辑添加了routes.rb

Answer 1

两件事。

由于@nathan指的是城市的复数形式的英文是城市，所以你的路线有问题，也许你重命名了？（请加入routes.rb）
你有一个statictic的路线，这是一个城市的嵌套资源，所以对于表格助手你应该传递

= form_for([@city, @statistic]) do |f|

Answer 2

您的路径文件显示citys而不是cities。也许你被ActiveResource复数问题所困扰了？

转到页面创建新记录时出现NoMethodError

2 个答案: