class ParanoiaUniquenessValidator::Validations::UniquenessWithoutDeletedValidator

Public Instance Methods

validate_each(record, attribute, value) click to toggle source
# File lib/paranoia_uniqueness_validator/validations/uniqueness_without_deleted.rb, line 4
def validate_each(record, attribute, value)
  finder_class = find_finder_class_for(record)
  value = map_enum_attribute(finder_class, attribute, value)

  relation = build_relation(finder_class, attribute, value)
  if record.persisted?
    if finder_class.primary_key
      relation = relation.where.not(finder_class.primary_key => record.id_in_database || record.id)
    else
      raise UnknownPrimaryKey.new(finder_class, "Can not validate uniqueness for persisted record without primary key.")
    end
  end
  relation = scope_relation(record, relation)
  relation = relation.merge(options[:conditions]) if options[:conditions]

  if defined?('Paranoia') && Paranoia.respond_to?(:default_sentinel_value)
    sentinel_value = Paranoia.default_sentinel_value
  else
    sentinel_value = nil
  end

  relation = relation.where(deleted_at: sentinel_value)

  if relation.exists?
    error_options = options.except(:case_sensitive, :scope, :conditions)
    error_options[:value] = value

    record.errors.add(attribute, :taken, error_options)
  end
end