I want to make a migration in Rails, referencing another table. Usually, I would do something like: add_column :post, :user, :references This creates a column named user_id in posts table. But what if, instead of user_id, I want something like author_id? How can I do that?
![Specifying column name in a "references" migration](https://cdn-ak-scissors.b.st-hatena.com/image/square/98d6f053a97a87156775f60757c60865d0f2c47d/height=288;version=1;width=512/https%3A%2F%2Fcdn.sstatic.net%2FSites%2Fstackoverflow%2FImg%2Fapple-touch-icon%402.png%3Fv%3D73d79a89bded)