Add column to existing ember model

Wow this is hard to find.

I have an existing model in ember and I would like to add a new column. I have't been able to see how to generate this from the CLI, so have manually added it to my component.js and models/post.js. I've added the field to my form and the handlebar to my view. Checking Firebase I can confirm I'm not updating the field.

In Rails I would simply run rails generate migration add_snippet_to_posts snippet:string but doing this in Ember just creates a new model.

How do I do this?