gistfile1.rb

# Given
# /auth/:section_token/?redirect_url=:redirection_with_token/?option=:option

entity = Instructor.find(5)

# this is a token that expires
confirmation_token = TokenModel.new_for_entity(
  entity_id: entity.token,
  type: :confirmation
)

AuthUrl.new(
  token: section_token,
  redirection: "confirm_relationship/#{confirmation_token}"
  option: :confirm
).to_s