Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

Ruby Active Record Associations in Rails Active Record Associations A "Has Many" Migration

MaryAnn Eleanya
MaryAnn Eleanya
8,626 Points

Hello, I don't know what I am doing wrong.

bin/rails g migration AddOwneridToPets owner_id:integer :index . "I don't know why this answer is not working."

1 Answer


You are very close!

Make sure to capitalize the i in Id when saying AddOwnerIdToPets and remove the space before the :index