Ask yourself: what would be the benefits of switching to Rails 3.1?
You'll have access to the latest and greatest upgrades to the framework such as the Asset Pipeline and better engine support. Rails 3.1 is where Rails is headed, so why not make the switch now?
As for staying on Rails 3.0, I don't see any reason to do that at all.
I as for me, I would switch to Rails 3.1, if your project is not quite large. I have 3 projects: rails 2.3.5, rails 3.0.5 and 3.1. And it is become hard to maintain older versions. When your project is not complex - you can easily migrate to fresh Rails and not fix any database or other dependencies.
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问问自己：切换到 Rails 3.1 有什么好处？
您将可以访问该框架的最新、最强大的升级，例如资产管道等发动机支持。 Rails 3.1 是 Rails 的发展方向，那么为什么不现在就进行切换呢？
至于留在 Rails 3.0 上，我根本看不出有任何理由这样做。
Ask yourself: what would be the benefits of switching to Rails 3.1?
You'll have access to the latest and greatest upgrades to the framework such as the Asset Pipeline and better engine support. Rails 3.1 is where Rails is headed, so why not make the switch now?
As for staying on Rails 3.0, I don't see any reason to do that at all.
就我而言，如果您的项目不是很大，我会切换到 Rails 3.1。我有 3 个项目：rails 2.3.5、rails 3.0.5 和 3.1。并且维护旧版本变得困难。当您的项目并不复杂时 - 您可以轻松迁移到新的 Rails，而无需修复任何数据库或其他依赖项。
I as for me, I would switch to Rails 3.1, if your project is not quite large. I have 3 projects: rails 2.3.5, rails 3.0.5 and 3.1. And it is become hard to maintain older versions. When your project is not complex - you can easily migrate to fresh Rails and not fix any database or other dependencies.