db/migrate/20180510214435_add_access_token_id_to_web_push_subscriptions.rb


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class AddAccessTokenIdToWebPushSubscriptions < ActiveRecord::Migration[5.2]
  def change
    safety_assured do
      add_reference :web_push_subscriptions, :access_token, null: true, default: nil, foreign_key: { on_delete: :cascade, to_table: :oauth_access_tokens }, index: false
      add_reference :web_push_subscriptions, :user, null: true, default: nil, foreign_key: { on_delete: :cascade }, index: false
    end
  end
end