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How to work with Git branches and Rails migrations

Asked 2011-01-19T12:10:10.303
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I am working on a rails app with quite a few git branches and many of them include db migrations. We try to be careful but occasionally some piece of code in master asks for a column that got removed/renamed in another branch.

  1. What would be a nice solution to "couple" git branches with DB states?

  2. What would these "states" actually be?

    We can't just duplicate a database if it's a few GBs in size.

  3. And what should happen with merges?

  4. Would the solution translate to noSQL databases as well?

    We currently use MySQL, mongodb and redis

EDIT: Looks like I forgot to mention a very important point, I am only interested in the development environment but with large databases (a few GBs in size).

ruby-on-rails database git
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Perhaps you should take this as a hint that your development database is too big? If you can use db/seeds.rb and a smaller data set for development then your issue can be easily solved by using schema.rb and seeds.rb from the current branch.

That assumes that your question relates to development; I can't imagine why you'd need to regularly switch branches in production.

answered 2011-01-20T16:13:01.193

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