discourse/db/migrate/20130809211409_add_avatar_to_users.rb

class AddAvatarToUsers < ActiveRecord::Migration[4.2]
  def change
    add_column :users, :use_uploaded_avatar, :boolean, default: false
    add_column :users, :uploaded_avatar_template, :string
    add_column :users, :uploaded_avatar_id, :integer
  end
end