Generating migrations from Rails schema updates, instead of the other way around

Question

I hate writing migrations, but it's important for the schemas to stay in sync. What I'd much rather do is update my schema.rb and have Rails notice, then run something which generates the appropriate migration based on the difference between the old version and the current version.

Is there a way I can do that?

Answer 1

Some Googling revealed this plugin: http://errtheblog.com/posts/65-automatically

It does not actually create migrations for you. But it looks like it does basically what you are looking for.

Edit: Here is the up-to-date link to the plugin code: http://github.com/pjhyett/auto_migrations/