neiam /gitgud

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

  # Comments become editable and soft-deletable.
  #
  # Deletion is soft on purpose: the history timeline interleaves a
  # comment's edits with everything else that happened, and those
  # events have to keep rendering after the comment is gone. A hard
  # delete would leave the timeline pointing at nothing.
  def change do
    for table <- [:issue_comments, :pr_comments] do
      alter table(table) do
        add :edited_at, :utc_datetime
        add :deleted_at, :utc_datetime
      end
    end
  end
end