DEPRECATION WARNING: Directly inheriting from ActiveRecord::Migration
is deprecated. Please specify the Rails release the migration was
written for:
class MigrationClass < ActiveRecord::Migration[4.2]
(called from require at bin/rails:4)
Why:
* We're still using id's on routes and other parts of the app, using slugs are more friendly and nice
How:
* Just a migration with a slug column with string type