我的解决方案是禁用空白输入并选择:

My solution was to disable blank inputs and selects:

$('form').submit (e) ->
  $(@).find('select,input').map( (i, e) -> e.disabled = !$(e).val() )

关于删除utf8，我发现了此.所以我***继续发送它.

Regarding removing utf8 I found this. So I better keep sending it.

在服务器上执行所有这些操作会导致在使用redirect_to时产生额外的请求，因此我更喜欢使用客户端代码.

Doing all of this on server resulted in an additional request when using redirect_to, so I prefer to use client side code.