MiniXml

一个简单的生成XML的gem，可以用于RSS订阅

安装

gem install mini_xml

Rails中安装：

gem "mini_xml"

bundle install

使用方法：

require 'mini_xml'

xml = ""
pagetitle = "Mini XML"
xml = MiniXml.generate do
  xml(version: '1.0', encoding: 'GBK')
  html do
    head do
      title {pagetitle}
      comment "this is a test"
    end
    body do
      h1(style: "font-family:sans-serif") { pagetitle }
      ul type: "Square" do
        li {Time.now}
        li {RUBY_VERSION}
      end
    end
  end
end
puts xml

输出如下：

<?xml version="1.0"  encoding="UTF-8"?>
<html>
    <head><title>Mini XML</title>
        <!-- this is a test -->
    </head>
    <body>
        <h1 style="font-family:sans-serif">Mini XML</h1>
        <ul type="Square"><li>2014-10-15 17:09:52 +0800</li><li>1.9.3</li></ul>
    </body>
</html>

传递一个子元素为hash的数组：

data = {data: [
    {title: '11111111111111', username: 'user1', email: 'user1@qq.com', link: 'https://code.csdn.net/news/2822064'},
    {title: '22222222222222', username: 'user2', email: 'user2@qq.com', link: 'https://code.csdn.net/news/2822064'},
    {title: '33333333333333', username: 'user3', email: 'user3@qq.com', link: 'https://code.csdn.net/news/2822064'},
    {title: '44444444444444', username: 'user4', email: 'user4@qq.com', link: 'https://code.csdn.net/news/2822064'},
    {title: '55555555555555', username: 'user5', email: 'user5@qq.com', link: 'https://code.csdn.net/news/2822064'}
]}

puts MiniXml.xml_from_data(data, [:title, :username, :link])

输出如下：
<?xml version="1.0"  encoding="UTF-8"?>
<rss version="2.0">
    <channel>
        <title>RSS</title>
        <description></description>
        <link></link>
        <item><title>11111111111111</title><username>user1</username><link>https://code.csdn.net/news/2822064</link></item>
        <item><title>22222222222222</title><username>user2</username><link>https://code.csdn.net/news/2822064</link></item>
        <item><title>33333333333333</title><username>user3</username><link>https://code.csdn.net/news/2822064</link></item>
        <item><title>44444444444444</title><username>user4</username><link>https://code.csdn.net/news/2822064</link></item>
        <item><title>55555555555555</title><username>user5</username><link>https://code.csdn.net/news/2822064</link></item>
    </channel>
</rss>

传递一个有属性的对象：

class User
  attr_reader :title, :username, :email, :link

  def initialize(attributes)
    attributes.each do |attr, value|
      eval("@#{attr}=value")
    end
  end
end
data1 = {
    title: 'RSS订阅',
    description: '欢迎订阅',
    link: 'http://www.baidu.com',
    data: [
        User.new({title: '11111111111111', username: 'user1', email: 'user1@qq.com', link: 'https://code.csdn.net/news/2822064'}),
        User.new({title: '22222222222222', username: 'user2', email: 'user2@qq.com', link: 'https://code.csdn.net/news/2822064'}),
        User.new({title: '33333333333333', username: 'user3', email: 'user3@qq.com', link: 'https://code.csdn.net/news/2822064'}),
        User.new({title: '44444444444444', username: 'user4', email: 'user4@qq.com', link: 'https://code.csdn.net/news/2822064'}),
        User.new({title: '55555555555555', username: 'user5', email: 'user5@qq.com', link: 'https://code.csdn.net/news/2822064'})
    ]
}
puts MiniXml.xml_from_data(data1, [:title, :username, :link])

输出：
<?xml version="1.0"  encoding="UTF-8"?>
<rss version="2.0">
    <channel>
        <title>RSS订阅</title>
        <description>欢迎订阅</description>
        <link>http://www.baidu.com</link>
        <item><title>11111111111111</title><username>user1</username><link>https://code.csdn.net/news/2822064</link></item>
        <item><title>22222222222222</title><username>user2</username><link>https://code.csdn.net/news/2822064</link></item>
        <item><title>33333333333333</title><username>user3</username><link>https://code.csdn.net/news/2822064</link></item>
        <item><title>44444444444444</title><username>user4</username><link>https://code.csdn.net/news/2822064</link></item>
        <item><title>55555555555555</title><username>user5</username><link>https://code.csdn.net/news/2822064</link></item>
    </channel>
</rss>

mini_xml

MiniXml

安装

使用方法：

Acknowledgements