ruby、sinatra 和 haml 中的联系表

我对这三个方面都是新手，我正在尝试为网站编写一个简单的联系表格。我想出的代码如下，但我知道它存在一些基本问题（由于我对 sinatra 缺乏经验）。任何帮助完成这项工作的帮助将不胜感激，我似乎无法弄清楚/找到这类事情的文档。

联系页面的 haml 代码：

%form{:name => "email", :id => "email", :action => "/contact", :method => "post", :enctype => "text/plain"}
  %fieldset
    %ol
      %li
        %label{:for => "message[name]"} Name:
        %input{:type => "text", :name => "message[name]", :class => "text"}
      %li
        %label{:for => "message[mail]"} Mail:
        %input{:type => "text", :name => "message[mail]", :class => "text"}
      %li
        %label{:for => "message[body]"} Message:
        %textarea{:name => "message[body]"}
    %input{:type => "submit", :value => "Send", :class => "button"}

这是我在 sinatra 的 app.rb 中的代码：

require 'rubygems'
require 'sinatra'
require 'haml'
require 'pony'

    get '/' do
        haml :index
    end 

    get '/contact' do
        haml :contact
    end

    post '/contact' do
        name = #{params[:name]}
        mail = #{params[:mail]}
        body = #{params[:body]}     
        Pony.mail(:to => '*emailaddress*', :from => mail, :subject => 'art inquiry from' + name, :body => body) 
    end

我为你们中的任何人想出了答案：

haml:

%form{ :action => "", :method => "post"}
  %fieldset
    %ol
      %li
        %label{:for => "name"} Name:
        %input{:type => "text", :name => "name", :class => "text"}
      %li
        %label{:for => "mail"} email:
        %input{:type => "text", :name => "mail", :class => "text"}
      %li
        %label{:for => "body"} Message:
        %textarea{:name => "body"}
    %input{:type => "submit", :value => "Send", :class => "button"}

还有app.rb：

post '/contact' do
        name = params[:name]
        mail = params[:mail]
        body = params[:body]

        Pony.mail(:to => '*emailaddress*', :from => "#{mail}", :subject => "art inquiry from #{name}", :body => "#{body}")

        haml :contact
    end