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...n a certain value is updated or created in a particular columns, a number of other columns columns are unique and that another column does not contain a certain value. I have been able to use the validates_uniqueness_of :column_a (to be updated or inserted) with , :scope => [ :column_b , :column_c , :column_d ] . This works well but now I also need to extend it so that a certain column is not equal to 0. How can I extend the validation rule to also include that a check is carried out that this other column does not equal to 0 Kind Regards Gurdipe -- You received this message because...