mobilizon/priv/repo/migrations/20180112100000_create_tracks.exs

defmodule Mobilizon.Repo.Migrations.CreateTracks do
  use Ecto.Migration

  def change do
    create table(:tracks) do
      add :name, :string
      add :description, :text
      add :color, :string

      add :event_id, references(:events, on_delete: :delete_all), null: false

      timestamps()
    end

  end
end