我正在处理嵌套资源项目,并在我的步骤控制器中收到错误:
def create @step = Step.new(step_params) respond_to do |f| if @step.save f.html { redirect_to @step,notice: 'Step was successfully created.' } f.json { render action: 'show',status: :created,location: @step } else f.html { render action: 'new' } f.json { render json: @step.errors,status: :unprocessable_entity } end end end
我得到的错误是:
undefined method `step_url' for #<StepsController:0x007feeb6442198>
我的路线看起来像这样:
root 'lists#index' resources :lists do resources :steps end
解决方法
在使用嵌套资源时,请更新create操作,如下所示:
def create @list = List.find(params[:list_id]) @step = @list.steps.build(step_params) ## Assuming that list has_many steps respond_to do |f| if @step.save ## update the url passed to redirect_to as below f.html { redirect_to list_step_url(@list,@step),status: :unprocessable_entity } end end end
运行rake路线以查看可用路线.
步骤#show的路线看起来像
GET lists/:list_id/steps/:id steps#show
使用list_step_url和2个参数@list For:list_id和@step for:id to to show page of Step.