https://ruby-china.org/suntianxiang en-us <p>apps/ controllers/ test/ test_controller.rb 目录结构就像这样，我应该怎么写 url 啊。</p> suntianxiang Thu, 06 Nov 2014 12:12:45 +0800 https://ruby-china.org/topics/22523 https://ruby-china.org/topics/22523 <p>我的 action def updeal file = params["upfile"] detail = "type" + file.content_type.strip if file.length &gt; 1 File.open('a.txt',"wb+") do |f| f.write(file.read) end end render(:text =&gt;detail) end 为啥不能用 length 方法？还有啥方法获得吗</p> suntianxiang Mon, 20 Oct 2014 15:07:49 +0800 https://ruby-china.org/topics/22136 https://ruby-china.org/topics/22136