Question

我有一个Rails 4.2.beta1应用程序，我试图在成功创建一个新对象后返回:show方法。资源嵌套在以下方法中：

resources :accounts do
    resources :lists do
end

我得到的错误是：

ActionController::UrlGenerationError (No route matches {
    :account_id=>#<List id: 21, creator_id: 1, list_type_id: 1, 
                        name: "Test 16", description: nil, 
                        created_at: "2014-10-07 03:59:56", 
                        updated_at: "2014-10-07 03:59:56">, 
    :action=>"show", :controller=>"lists", :format=>nil, :id=>nil} 
    missing required keys: [:id]):

app/views/lists/show.json.jbuilder:2:in `_app_views_lists_show_json_jbuilder__4188070110312340824_70141816016640'
app/controllers/lists_controller.rb:31:in `create'

我在这里看到的是，rails错误地认为新的List对象是account_id ...

以下是我的create操作：

# POST /lists
# POST /lists.json
def create
  @list = List.new(creator: @account, list_type: ListType.find(list_params[:list_type_id]), name: list_params[:name])
  if @list.save
    @account.subscriptions << @list
    render action: :show, status: :created, location: [@account, @list] and return
  end
  render json: @list.errors, status: :unprocessable_entity
end

我找到了这个Q / A here并且在那里得到了所有答案而结果没有变化。为了列出它们，我尝试了以下所有......

#1
render action: :show, status: :created, location: [@account, @list] and return

#2
render action: 'show', status: :created, location: [@account, @list] and return

#3
render action: :show, status: :created, location: [@list.creator, @list] and return

#4
render action: :show, status: :created, location: @list and return

#5
render action: :show, status: :created, location: [@list, @account] and return

#6
render action: :show, status: :created, location: [:account, @list] and return

#7
render action: :show, status: :created, location: accounts_list_url(@account, @list) and return

#8
render action: :show, status: :created and return

#9
redirect_to action: :show, status: :created, location: [@account, @list] and return

#10
redirect_to accounts_lists_url(@account, @list) and return

所有这些都产生相同的错误（或明显的错误，比如像＃5那样使用错误的顺序）

需要注意的另一件事是＃7＆amp;＆amp; ＃10产生错误：

NoMethodError (undefined method `accounts_lists_url' for #<ListsController:0x007f9652235c40>)

对我来说这似乎也很奇怪

Answer 1

所以....我觉得自己像个白痴。我正在阅读错误消息，但实际上并没有 正在阅读 错误消息。

问题发生在我的show.json.jbuilder文件中。我有account_list_url(@list)电话，这显然是不正确的。我以为我在那里检查了但显然没有。

带回家消息：如果错误消息显示带有jbuilder的堆栈跟踪。查看jbuilder文件...

ActionController :: UrlGenerationError没有路由匹配AND NoMethodError未定义方法`accounts_lists_url＆＃39;使用嵌套资源

1 个答案: