Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

Ruby Active Record Associations in Rails More Association Options A Migration for a Polymorphic Association

Nicolás Melgarejo
Nicolás Melgarejo
15,532 Points

Hi Community! I can't understand what is wrong in my code

bin/rails g migration AddVehicleToPart vehicle_id:integer vehicle_type:string

1 Answer

The error message you receive is:

Bummer: You're adding a column to an existing table, so it's conventional for the migration name to end with the name of the table you're adding a column to. (The table name should be capitalized when it's part of a migration name.)

From the instructions the name of the table is parts. You are missing the s at the end: AddVehicleToParts.