ActiveRecord.jsJavaScript 对象映射框架

ActiveRecord.js 是一个开源的JavaScript 对象映射框架，包括：

• Google Gears (client-side persistence)


• In Memory (if no SQL server is available on the client)


• Adobe AIR (client-side persistence)


• SQLite and MySQL (via Aptana Jaxer, the open source Ajax server)


• additional environments (like HTML5) expected to come through working with the community on the project

ActiveRecord.js abstracts away underlying SQL commands so that JavaScript developers can have a unified API for storing, finding, selecting and retrieving objects and their data using the ActiveRecord pattern popularized by the Ruby on Rails community.

示例代码：

1. var User = ActiveRecord.define('users',{  


2.     username: '',  


3.     email: ''  


4. });  


5. User.hasMany('articles');  


6.   


7. var ryan = User.create({  


8.     username: 'ryan',  


9.     email: 'rjohnson@aptana.com'  


10. });  


11.   


12. var Article = ActiveRecord.define('articles',{  


13.     name: '',  


14.     body: '',  


15.     user_id: 0  


16. });  


17. Article.belongsTo('user');  


18.   


19. var a = Article.create({  


20.     name: 'Announcing ActiveRecord.js',  


21.     user_id: ryan.id  


22. });  


23. a.set('name','Announcing ActiveRecord.js!!!');  


24. a.save();  


25.   


26. a.getUser() == ryan;  


27. ryan.getArticleList()[0] == a;