Ruby on Rails API和Web服务(Ruby on Rails API and web services)

 我是Web应用程序开发的新手，我有一个非常noob的问题。 据我所知，可以使用Rails编写Web应用程序的后端 - 模型，业务逻辑等，并使用HTML，CSS Javascript（不使用Rail的表单助手，嵌入式ruby等）编写后端 - 视图。）并且所述视图将呈现数据暴露Rails API并向其发出AJAX请求。 每次我用Google搜索“rails ajax requests API”时，我只找到了解释如何使用AJAX w / embedded ruby​​而不是教程的教程，这些教程明确区分了如何制作Rails API并使AJAX请求呈现数据。 所以我的问题是： 
 
 1）如果上述任何陈述不正确，您能告诉我吗？ 
 
 2）有人能指点我帮助我理解上述主题的理论和实现的教程吗？ 
 
 谢谢！ 

I am fairly new to web application development and I have a pretty noob question. As I understand, it is possible to write the backend of a web application - models, business logic, etc. using Rails and write the backend - the view - using just HTML, CSS Javascript (without using Rail's form helpers, embedded ruby, etc.) and that the said view would render data exposing a Rails API and making AJAX requests to it. Everytime I googled "rails ajax requests API" I have only found tutorials that explain how to use AJAX w/ embedded ruby instead of tutorials that clearly separate how to make a Rails API and make AJAX requests to render data. So my questions are:
 
1) If any of the above statements are incorrect, could you let me know?
 
2) Can someone point me to tutorials that help me understand the theory and implementation of the aforementioned topics?
 
Thanks!

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