Migration Generator in Ruby

From the Ruby on Rails cheat sheet · Generators · verified Jul 2026

Migration Generator

Generate standalone database migrations

bash

# Add column migration
rails generate migration AddEmailToUsers email:string

# Remove column migration
rails generate migration RemoveEmailFromUsers email:string

# Create join table
rails generate migration CreateJoinTableUserProject user project

✅ Rails infers migration content from name convention

💡 AddXxxToYyy and RemoveXxxFromYyy auto-generate code

🔍 Use CreateJoinTable for many-to-many relationships

⚡ Always review generated migration before running

generatormigrationdatabase

More Ruby tasks

Model Generator
Controller Generator
Scaffold Generator

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