1 class RemoveKindColumns < ActiveRecord::Migration
3 remove_column :links, :head_kind
4 remove_column :links, :tail_kind
5 remove_column :logs, :object_kind
9 add_column :links, :head_kind, :string
10 add_column :links, :tail_kind, :string
11 add_column :logs, :object_kind, :string