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要根据请求端的不同而返回不同的页面，首先就得判断出请求端是pc还是mobile。在http请求时，user_agent这个字段会记录用户所用的设备和浏览器。所以就得对user_agent进行解析，来获取是什么设备。

Getting Started

  • Install useragent gem package

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    $ gem install josh-useragent

  • Modify Gemfile

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    gem 'josh-useragent', '~> 0.0.3'

  • Bundle Install Package

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    $ bundle install

  • Usage

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    user_agent = request.user_agent
    或
    user_agent = request.env['HTTP_USER_AGENT']
    p user_agent #=> "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/29.0.1547.3 Safari/537.36"

    user_agent_parsed = UserAgent.parse(user_agent)
    p user_agent_parsed.platform #=> 'Macintosh'
    p user_agent_parsed.browser # => 'Chrome'

  • Other Packages

    agent_orange
    browser