You can add your own custom buttons to the Reservation form on the calendar. These buttons can reference a VisualForce page and its controller to perform any kind of logic on existing Reservations.

You can also define a custom Apex class to perform actions on the Reservation without leaving the Reservation Form.

Redirecting to a custom VisualForce page

1. Click on Setup and search for Custom Settings

2. Click on Manage next to Custom Buttons

3. Click New

4. Fill in an appropriate Name and Label

5. Fill in /apex/c__{vfpagename}?id= in the URL field where {vfpagename} is the name of your visualforce page

6. Click Save

This button will now be added to the reservation form. On click, it will perform the logic in the VisualForce page's controller on the reservation record.

Defining a custom apex class

1. Create a global Apex class that implements the B25.ExecutableCustomButton interface. For an example, see the code below.

2. Click on Setup and search for Custom Settings

3. Click on Manage next to Custom Buttons

4. Click New

5. Fill in an appropriate Name and Label

6. Fill in the name of the apex class in the Executable Class Name field

7. Click Save

This button will now be added to the Reservation Form. On click, it will perform the logic in the Apex class and update the form according to any changes made.

Implementing the B25.ExecutableCustomButton interface

The B25.ExecutableCustomButton requires you to implement one method public void execute(B25.ExecutableCustomButtonContext context).

This method is called when the user clicks the button on the Reservation Form.

The ExecutableCustomButtonContext object contains the following data:

Below is a sample implementation that moves the Reservation forward by one hour. It updates both the B25__StartLocal__c and B25__Start__c fields, as otherwise a 'time mismatch error' may occur. 

Sample implementation

global with sharing class SampleImplementation implements B25.ExecutableCustomButton {

   public void execute(B25.ExecutableCustomButtonContext context) {
      context.reservation.B25__StartLocal__c = context.reservation.B25__StartLocal__c.addHours(1);
      context.reservation.B25__EndLocal__c = context.reservation.B25__EndLocal__c.addHours(1);
      context.reservation.B25__Start__c = context.reservation.B25__Start__c.addHours(1);
      context.reservation.B25__End__c = context.reservation.B25__End__c.addHours(1);
      Database.update(context.reservation);
   }
}

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