Ruby on rails 3.2 PDFKit-未定义的方法'；扫描"；错误

获取此错误：

NoMethodError in AwardsController#certificate 
undefined method `scan' for #<Array:0x0000000354bd40>

运行包安装

application.rb：

require 'pdfkit'
config.middleware.use "PDFKit::Middleware"

routes.rb：

match 'awards/certificate/:id' => 'awards#certificate', :as => :certificate, :via => :get

主控主任：

def certificate
    @award = Award.find(params[:id])
    html = render :layout => false 
    kit = PDFKit.new(html, :page_size => 'Letter')
    kit.stylesheets << RAILS_ROOT + '/public/stylesheets/scaffold.css'
    send_data(kit.to_pdf, :filename => "#{@award.nominee_fullname Certificate}", :type => 'application/pdf')
  end

耙道：

certificate GET    /awards/certificate/:id(.:format)     awards#certificate

如果我把.pdf放在URL的末尾，我会得到：

Routing Error

No route matches [GET] "/highfive/awards/certificate/51"

---

有人知道我做错了什么吗？提前感谢。

使用

渲染到字符串

而不是

渲染

certificate GET    /awards/certificate/:id(.:format)     awards#certificate

Routing Error

No route matches [GET] "/highfive/awards/certificate/51"