I\'m getting an error:
SQLite3::SQLException: no such column: ideas.list_id: SELECT \"ideas\".* FROM \"ideas\" WHERE \"ideas\".\"list_id\" = 2
You can also do this ..
rails g migration add_column_to_users list_id:string
then rake db:migrate
rake db:migrate
also add :list_id attribute in your user controller ;
add :list_id
for more detail check out http://guides.rubyonrails.org/active_record_migrations.html