neiam /gitgud

defmodule GitGud.Repo.Migrations.AddPrSourceRepo do
  use Ecto.Migration

  def change do
    alter table(:pull_requests) do
      # NULL = same-repo PR (current behavior). Otherwise the PR's
      # source branch lives on this fork; mergeability + merge use a
      # `refs/pull/<N>/head` we fetch into the target.
      add :source_repository_id, references(:repositories, on_delete: :nilify_all)
    end

    create index(:pull_requests, [:source_repository_id])
  end
end