A Comprehensive Guide to Ruby on Rails Database Migrations
Ruby on Rails provides a powerful and flexible way to update database schemas without dropping and re-creating the database. However, the numerous migration methods, options, and conventions can be overwhelming for developers. In this article, the author presents a comprehensive cheatsheet for the most common migration operations in Rails.
The cheatsheet covers various topics, including generating migrations, migration structure, applying migrations, and reverting migrations. It provides step-by-step instructions and examples for each operation, making it easier for developers to handle schema changes while keeping their updates under version control.
The author also highlights the importance of timestamps in migrations and explains how Rails automatically adds the created_at
and updated_at
columns to new tables. Additionally, the article mentions the db:migrate:status
command, which allows developers to verify the applied migrations.
Overall, this cheatsheet serves as a valuable resource for developers working with Ruby on Rails, providing them with a handy reference for common database operations.