Migrationsbest practices (27) object oriented design (7) testing (7) models (4) performance (4) views (4) gems (3) case studies (2) cloudflare (1) controllers (1) metaprogramming (1) migrations (1) All PostsRails migration best practicesNever Modify the `up` Method on a Committed Migration. Never Use External Code in a Migration. Always Provide a `down` Method in MigrationsBest Practices MigrationsRoland Lopez Roland Lopez09/05/2024 · 2 min read