Very often, I’d like to know if an object is .valid? inherently - that
is, if it meets all the validations that are run on it by itself, but I
don’t care if one of the fields is not unique.
What’s the best way to determine this - that is, to run all the
validations except the validates_uniquness ones?
(A common use case is when importing data - it’s important to
distinguish between corrupt data, and between data that has already been
imported).