about the first question, I can suggest you TeamBox, very similar to Basecamp, but it's open source, with an avaiable repository on github. it's written in rails.
for the second question: for sure I learnt about MVC approach (I re-applied same philosophy to PHP in some works). the next generation frameworks are using even more abstractions and layers. for example using ORM libraries for different databases (you save time writing SQL queries, you can use same API for different databases, even for the new NoSQL storages). I suggest you to look for Redis, CouchDB and MongoDB databases. they are different each other about approach and data-organization, but they are becoming very useful for complicated web-apps
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我知道从 Ruby News 保存这条推文会派上用场。
看一下 Chris Lowis 的帖子：可供研究和学习的开源 Rails 应用。
I knew that saving this tweet from Ruby News would come in handy.
Take a look at Chris Lowis's post: Open-source rails apps to study and learn from.
关于第一个问题，我可以建议你TeamBox，与Basecamp非常相似，但它是开源的，有可用的github 上的存储库。它是用 Rails 编写的。
对于第二个问题：我当然了解了 MVC 方法（我在一些作品中将相同的理念重新应用于 PHP）。下一代框架正在使用更多的抽象和层。例如，对不同的数据库使用 ORM 库（您可以节省编写 SQL 查询的时间，您可以对不同的数据库使用相同的 API，甚至对于新的 NoSQL 存储也是如此）。
我建议你寻找 Redis、CouchDB 和 MongoDB 数据库。它们在方法和数据组织方面彼此不同，但它们对于复杂的网络应用程序变得非常有用
about the first question, I can suggest you TeamBox, very similar to Basecamp, but it's open source, with an avaiable repository on github. it's written in rails.
for the second question: for sure I learnt about MVC approach (I re-applied same philosophy to PHP in some works). the next generation frameworks are using even more abstractions and layers. for example using ORM libraries for different databases (you save time writing SQL queries, you can use same API for different databases, even for the new NoSQL storages).
I suggest you to look for Redis, CouchDB and MongoDB databases. they are different each other about approach and data-organization, but they are becoming very useful for complicated web-apps