unique validator is part of the cborm module. So make sure that the
cborm module is installed first.
box install cborm
The validator is mapped into WireBox as
[email protected] so you can use in your constraints like so:
If you will be using this validator, then the name of the property has to be EXACTLY the same case as the constraint name. To do this, use single or double quotes to declare the constraint name. Please see example below.