link_to 'Download',get_invoice_path(:number => invoice.invoice_number)

关联的控制器具有get_invoice方法,如下所示：

def get_invoice
    begin
      @pdf = Recurly::Invoice.find(params[:number],:format => 'pdf')
    rescue Recurly::Resource::NotFound => e
      flash[:error] = 'Invoice not found.'
    end
  end

当我点击链接时,我得到了在我的控制台中以二进制形式呈现的PDF.如何在浏览器中渲染PDF？