On Migration: undefined method `to_sym' for nil:NilClass

Question

I\'m running Rails 3.0.3 and I accidentally made a typo in my migration: I created a migration that creates a new column with a type of boolen (it should have b

Answer 1

I had almost exactly the same issue (had misspelled bolean) and couldn't get rake db:rollbackto work, nor dropping the column name (because of SQLite3), using Rails 4.0.2.

As I didn't care if the DB data was deleted, this is how I fixed it:

1. Drop the entire database rake db:drop
2. Edit the [timestamp]_migration_name.rb file to correctly say boolean
3. Create the database again rake db:create
4. Migrate the data rake db:migrate
5. (Restart the web server, et voila!)