method
validates_absence_of
v6.1.7.7 -
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- Class:
ActiveRecord::Validations::ClassMethods
validates_absence_of(*attr_names)public
Validates that the specified attributes are not present (as defined by Object#present?). If the attribute is an association, the associated object is considered absent if it was marked for destruction.
See ActiveModel::Validations::HelperMethods.validates_absence_of for more information.