webmachine的init 和 to_html

请问 群里 有没有 用 webmachine， init 和 to_html 是必须的吗 

这个问题 困惑了 我一会。昨天就应该发现他们的本质，还好只拖到了今天开始

下面 默认提供的to_html方法，当然如果喜欢 可以改成to_htm

init是必须的 初始化用的

。。。。。

 

content_types_provided

[{"text/html", to_html}]

[{Mediatype, Handler}]

This should return a list of pairs where each pair is of the form {Mediatype, Handler} where Mediatype is a string of content-type format and the Handler is an atom naming the function which can provide a resource representation in that media type. Content negotiation is driven by this return value. For example, if a client request includes an Accept header with a value that does not appear as a first element in any of the return tuples, then a 406 Not Acceptable will be sent.