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# frozen_string_literal: true
module Gitlab
module Graphql
module Pagination
module Keyset
# This class handles the last(N) ActiveRecord call even if a special ORDER BY configuration is present.
# For the last(N) call, ActiveRecord calls reverse_order, however for some cases it raises
# ActiveRecord::IrreversibleOrderError error.
class LastItems
# rubocop: disable CodeReuse/ActiveRecord
def self.take_items(scope, count)
if Gitlab::Pagination::Keyset::Order.keyset_aware?(scope)
order = Gitlab::Pagination::Keyset::Order.extract_keyset_order_object(scope)
items = scope.reorder(order.reversed_order).first(count)
items.is_a?(Array) ? items.reverse : items
else
scope.last(count)
end
end
end
end
end
end
end
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