priv/repo/migrations/20200914105800_add_notification_constraints.exs


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defmodule Pleroma.Repo.Migrations.AddNotificationConstraints do
  use Ecto.Migration

  def up do
    drop(constraint(:notifications, "notifications_activity_id_fkey"))

    alter table(:notifications) do
      modify(:activity_id, references(:activities, type: :uuid, on_delete: :delete_all),
        null: false
      )
    end
  end

  def down do
    drop(constraint(:notifications, "notifications_activity_id_fkey"))

    alter table(:notifications) do
      modify(:activity_id, references(:activities, type: :uuid, on_delete: :delete_all),
        null: true
      )
    end
  end
end