Making a Property Mandatory or Optional Following an Update to Another Property

This document provides information on how to use business logic to make a property (field) mandatory or optional when the value in a different property is updated.

The process described below demonstrates how to add a script to a data class to set the value of one property (MYPROP2) to mandatory or optional when the value of a different property (MYPROP1) is set.

1. Open your data class.
2. In the Scripts block of the General tab
   
   1. Select the appropriate type for your script in the Type field.
   2. Accept the default code displayed in the Scripts fields. It is automatically generated using the class code and the script type. You can also enter a unique code for your script.
   3. Accept the numeric value displayed in the Running order field. It is automatically generated to control the order in which the $PROPERTIES and $METHODS labels are called in the event. You can also enter the running order code for your script.
3. Click the Actions button of your script, and click Processing editor. Enter the source code below.

   $PROPERTIES
     Case CURPRO
       When "MYPROP1"    : Gosub MYPROP1
     Endcase
   Return
   # Actions for "MYPROP1"
   $MYPROP1
     Case ACTION
       When "PROPAGATE" : Gosub MYPROP1_PROPAGATE
     Endcase
   Return
   # Set MYPROP2 to Mandatory or not, depending on value of MYPROP1
   $MYPROP1_PROPAGATE
     If THIS.MYPROP1 = CST_AYES
       ASTATUS = fmet THIS.ASETATTRIBUTE("MYPROP2","$isMandatory","true")
     Else
       ASTATUS = fmet THIS.ASETATTRIBUTE("MYPROP2","$isMandatory","false")
     Endif
   Return

4. Save your script.
5. Save and validate your data class.