[<10>]
======  "Cancel Reservation" operation ======

To cancel a reservation users would need to navigate to the corresponding reservation and then click on the "Cancel" button. Users can navigate to the reservation either from the form of a member who made the reservation or from the form of the item (this is similar to the "[[docs:6000_case_study:0400_configuration:0700_operations:1000_renew_loan|Renew Loan]]" operation).

To cancel a reservation the system would need to change the status of the reservation to "Cancelled" and the rest will be taken care by the business rules of the ''[[docs:6000_case_study:0400_configuration:0600_business_rules:0400_reservation_object|Reservation]]'' object. In order to do this we would need to define the process called ''CancelReservation'' that requires the ''Reservation'' object as its input and which has the single action defined:

<code aim>Reservation.Status = 'Cancelled' </code>

We will also ask the user to confirm cancellation of the Reservation and check that he replied "Yes" before changing status of the reservation. The whole process will look like so:

<code aim>DISPLAY QUESTION 'Do you want to cancel the reservation?'
IF Question.Reply='Yes' THEN 
 Reservation.Status='Cancelled' </code>