What are Ruby on Rails migrations and how do versions work?
An example of an AI chatbot conversation about Ruby on Rails migrations and their versioning system.
What are Ruby on Rails migrations and how do versions work?
Ruby on Rails migrations are a way to modify your database schema over time. Each migration file has a version number that helps track changes.
How do I create a new migration in Rails?
You can create a new migration using the command rails generate migration MigrationName. This will create a new migration file.
Can I roll back a migration? How does that work?
Yes, you can roll back a migration using the command rails db:rollback. This will revert the last migration applied.
What happens if I change a migration after it's been run?
If you change a migration after it's been run, you should create a new migration to apply the changes instead of modifying the existing one.
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