validates_uniqueness_of scoped to multiple columns

Question

When using Validates_uniqueness_of with the :scope option, is it valid to pass an array of columns like this:

validates_uniqueness_of :x, :scope => [:y, :z]

As I want :x to be unique in the context of both :y and :z If not then how could you achieve this? 2 validations one for each scope?

Thanks

Answer 1

Yes, it's valid and your syntax is exactly the way to achieve it. See the validations documentation page for more details.