ruby-on-rails – Date.new为“11”返回未定义的方法`div’：String

我收到了错误

undefined method `div’ for “11”:String”

提交表单时指向@startdate行.我不明白发生了什么事.如果我在rails控制台中执行这些步骤,它可以正常工作.

在我的控制器中,我有：

@startday = params["startday_#{i}".to_sym]
@startmonth = params["startmonth_#{i}".to_sym]
@startyear = params["startyear_#{i}".to_sym].to_s
@endday = params["endday_#{i}".to_sym]
@endmonth = params["endmonth_#{i}".to_sym]
@endyear = params["endyear_#{i}".to_sym].to_s
@startdate = params["startdate_#{i}".to_sym]
@price = params["price_#{i}".to_sym]
@currency = params[:currency]
@startdate = Date.new(@startyear,@startmonth,@startday)
@enddate = Date.new(@endyear,@endmonth,@endday)

我发送的哈希是：

{
  "startmonth_1"=>"2","startday_1"=>"11","startyear_1"=>"12","endmonth_1"=>"2","endday_1"=>"13","endyear_1"=>"12","price_1"=>"12",}

如果我做了

@startee = @startyear.to_s + '-' + @startmonth.to_s + '-' + @startday
return render :text => @startee

我明白了：

12-2-11

所以我没有看到问题.一切似乎都运转正常.

解决方法

当您需要传递整数时,您将字符串传递给Date.new：

@startday = params[:"startday_#{i}"]
@startmonth = params[:"startmonth_#{i}"]
@startyear = params[:"startyear_#{i}"].to_s
@endday = params[:"endday_#{i}"]
@endmonth = params[:"endmonth_#{i}"]
@endyear = params[:"endyear_#{i}"].to_s
@startdate = params[:"startdate_#{i}"]
@price = params[:"price_#{i}"]
@currency = params[:currency]

@startdate = Date.new(@startyear.to_i,@startmonth.to_i,@startday.to_i)
@enddate = Date.new(@endyear.to_i,@endmonth.to_i,@endday.to_i)

此外,如果您不需要在视图中使用这些变量,则无需将它们设为实例变量,而应将其设置为局部变量(即删除名称中的前导@).