db/migrate/20161031171301_add_project_id_to_subscriptions.rb


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class AddProjectIdToSubscriptions < ActiveRecord::Migration
  include Gitlab::Database::MigrationHelpers

  DOWNTIME = false

  def up
    add_column :subscriptions, :project_id, :integer
    add_foreign_key :subscriptions, :projects, column: :project_id, on_delete: :cascade
  end

  def down
    remove_column :subscriptions, :project_id
  end
end