Issue #664 | Update handling nil value for PgHash #665
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Issue 664: Cache returns last value if nil value provided
When assigning attribute (which uses translations) nil value, it won't invalidate cache and will store previous value.
This possibly can affect any logic, but the common example is ActiveRecord validations. As cache uses previous value, it will pass presence validation, but it is incorrect as current value is nil.
Disabling cache for the attribute fixes situation, but actually it is not a solution.
This change appeared after version 1.2.9 and possibly after implementing logic for the Issue #535