Add a reference column migration in Rails 4

Question

A user has many uploads. I want to add a column to the uploads table that references the user. What should the migration look like?

Here i

Answer 1

Rails 5

You can still use this command to create the migration:

rails g migration AddUserToUploads user:references

The migration looks a bit different to before, but still works:

class AddUserToUploads < ActiveRecord::Migration[5.0]
  def change
    add_reference :uploads, :user, foreign_key: true
  end
end

Note that it's :user, not :user_id