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
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