Question

我的数据层次结构是'案例'有很多'类别'有很多'任务'

我已经遵循文档，资源永远不应该嵌套超过1级。因此，我使用浅如下：

my routes.rb

resources :cases do
    resources :categories, :shallow => true do
      resources :tasks, :shallow => true
  end
end

佣金路线

     category_tasks GET    /categories/:category_id/tasks(.:format)     tasks#index
                       POST   /categories/:category_id/tasks(.:format)     tasks#create
     new_category_task GET    /categories/:category_id/tasks/new(.:format) tasks#new
             edit_task GET    /tasks/:id/edit(.:format)                    tasks#edit
                  task GET    /tasks/:id(.:format)                         tasks#show
                       PATCH  /tasks/:id(.:format)                         tasks#update
                       PUT    /tasks/:id(.:format)                         tasks#update
                       DELETE /tasks/:id(.:format)                         tasks#destroy
       case_categories GET    /cases/:case_id/categories(.:format)         categories#index
                       POST   /cases/:case_id/categories(.:format)         categories#create
     new_case_category GET    /cases/:case_id/categories/new(.:format)     categories#new
         edit_category GET    /categories/:id/edit(.:format)               categories#edit
              category GET    /categories/:id(.:format)                    categories#show
                       PATCH  /categories/:id(.:format)                    categories#update
                       PUT    /categories/:id(.:format)                    categories#update
                       DELETE /categories/:id(.:format)                    categories#destroy
                 cases GET    /cases(.:format)                             cases#index
                       POST   /cases(.:format)                             cases#create
              new_case GET    /cases/new(.:format)                         cases#new
             edit_case GET    /cases/:id/edit(.:format)                    cases#edit
                  case GET    /cases/:id(.:format)                         cases#show
                       PATCH  /cases/:id(.:format)                         cases#update
                       PUT    /cases/:id(.:format)                         cases#update
                       DELETE /cases/:id(.:format)                         cases#destroy
                  root GET    /                                            cases#index

我已将类别视图放入case / show.html.erb以显示此案例中的类别。

案例的网址#show是 localhost：3000 / cases / 9

如果我想创建一个新类别，链接将是 localhost：3000 / cases / 9 / categories / new

它适用于redirect_to案例#show page with my categories＃create action

def create
    @case = Case.find(params[:case_id])
    @category = Category.new(category_params)
    @category.case = @case
    @case.member = current_member

    if @category.save
      redirect_to case_path(@case)
    else
      render :new
    end
end

但是当我尝试编辑类别并更新它时

网址更改为 localhost：3000 / categories / 2 / edit 我已经没有case_id了。

它无法重定向回案例#show page localhost：3000 / cases / 9

我尝试将类似的代码编写为我的创建操作，如下所示

def update
   @case = Case.find(params[:case_id])
   @category = Category.find(params[:id])
   @category.case = @case

   if @category.update(category_params)
      redirect_to case_path(@case)
   else
      render :edit
   end
end

但它无法获取case_id和错误消息，如下所示

Couldn't find Case with 'id'=

如何在编辑和更新“类别”后重定向到 localhost：3000 / cases / 9 ？

Answer 1

shallow: true根据document将edit_category更改为浅路线。浅路线中没有父资源ID。

您可以改用@case = @category.case。无需category_id PARAM

Answer 2

由于您不想在编辑类别时更改大小写，请尝试以下方法。

def update
   @category = Category.find(params[:id])
   @case = @category.case

   if @category.update(category_params)
      redirect_to case_path(@case)
   else
      render :edit
   end
end

rails路由无法正确重定向

2 个答案: