Ruby on rails 抢救rails控制器中的无效日期

我有一个控制器：

pickuptime = params[:appointment][:pickuptime]
pickuptime = DateTime.strptime(pickuptime, "%m/%d/%Y %l:%M %p %Z")

begin
  pickuptime = params[:appointment][:pickuptime]
  pickuptime = DateTime.strptime(pickuptime, "%m/%d/%Y %l:%M %p %Z")
rescue ArgumentError => e
  flash[:error] = e.message
  redirect_to :back
  return
end

如果

DateTime.strtime

回退

无效日期

错误并将其重定向回上一页，并显示闪烁消息“Invalid Date”，我想

rescue

it。我怎样才能做到这一点

---

我正在使用Ruby 2.1.2和Rails 4.1.4。谢谢

您可以在控制器中执行此操作：

pickuptime = params[:appointment][:pickuptime]
pickuptime = DateTime.strptime(pickuptime, "%m/%d/%Y %l:%M %p %Z")

begin
  pickuptime = params[:appointment][:pickuptime]
  pickuptime = DateTime.strptime(pickuptime, "%m/%d/%Y %l:%M %p %Z")
rescue ArgumentError => e
  flash[:error] = e.message
  redirect_to :back
  return
end

---

无效日期

错误应为ArgumentError异常，并显示所需的消息

谢谢，我唯一需要更改的就是在

重定向到：back

之后添加一个

return

。