use Ecto.Migration
def change do
- create table(:notifications) do
+ create_if_not_exists table(:notifications) do
add :user_id, references(:users, on_delete: :delete_all)
add :activity_id, references(:activities, on_delete: :delete_all)
add :seen, :boolean, default: false
timestamps()
end
- create index(:notifications, [:user_id])
+ create_if_not_exists index(:notifications, [:user_id])
end
end