class CreateTransplantRejectionTreatments < ActiveRecord::Migration[5.2]
  def change
    # The treatment given for an episode
    create_table :transplant_rejection_treatments do |t|
      t.text :name, null: false, index: :unique
      t.integer :position, index: true, null: false, default: 0
      t.timestamps null: false
    end

    add_reference(
      :transplant_rejection_episodes,
      :treatment,
      foreign_key: { to_table: :transplant_rejection_treatments },
      index: true
    )
  end
end