Populating a slug field in a migration

[sanderjson]

I have some number of Posts from cargo loco g scaffold posts title:string content:text and then later realize I want to reference url by slug and not by id.

• I create a migration with cargo loco g migration AddSlugToPosts slug:string
• I apply the migration (but there is no slug) with cargo logo db migrate
• I can now reference slug in my controllers and pass data to frontend

I want to be able to apply the migration that adds thew new schema and populate the column slug from slugify(title)

How should I have handled this migration? Is there already some best practice with slugifying routes in loco? Is this a task for the manager? I read the docs on models & manager here, but I am not sure how to apply that to my task.