fr@w500 twomodels $ rake db:migrate
==  MakeVendorAString: migrating ==============================================
-- add_column(:softwares, :vendor_str, :string)
   -> 0.0006s
rake aborted!
An error has occurred, this and all later migrations canceled:

undefined method `vendor' for #<MakeVendorAString::Software:0x00000002a48010>

Tasks: TOP => db:migrate
(See full trace by running task with --trace)