可以在rails上的ruby中使用“数据库优先”方法吗？

Question

是否可以在GUI mysql管理器中创建db模式，然后基于此模式创建（或更新）模型？

Answer 1

This is what migrations are for. Once you learn the DSL, writing migrations (esp. with the built-in generators) is much easier than fiddling with a GUI to create tables. Check out the migrations guide for detailed info.

ActiveRecord already does a lot automatically based on the database schema, such as adding getters and setters based on columns. I'm not sure what more you're wanting, so I dont know how to help you any more specifically.

Answer 2

Migrations might look confusing on first sight, but once you get used to them migrations work naturally in Rails. If you mistype a name, you just rollback and correct the migration file. Or write another mig that corrects the error in the rare case you used it on the production db.

They give you far more power, especially if your project went through several version stages. You can at any point rollback and migrate to any former state and when you add new columns you can easily set default values or write short ruby scripts that adjusts values or relations.