class AddUtmToPlayers < ActiveRecord::Migration[8.1]
  def change
    # Where the player came from. The campaign is run on printed QR codes, so
    # `utm_content` is the interesting one -- it names the physical thing that
    # was scanned (table_talker, canteen_poster, ...). The other three are kept
    # so a non-QR link (mail, intranet) can still be told apart later.
    add_column :players, :utm_source,   :string
    add_column :players, :utm_medium,   :string
    add_column :players, :utm_campaign, :string
    add_column :players, :utm_content,  :string

    add_index :players, :utm_content
    add_index :players, :utm_source
  end
end