method
find_nth_from_last
v5.1.7 -
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Class: ActiveRecord::FinderMethods
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find_nth_from_last(index)
private
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# File activerecord/lib/active_record/relation/finder_methods.rb, line 543 def find_nth_from_last(index) if loaded? records[-index] else relation = if order_values.empty? && primary_key order(arel_attribute(primary_key).asc) else self end relation.to_a[-index] # TODO: can be made more performant on large result sets by # for instance, last(index)[-index] (which would require # refactoring the last(n) finder method to make test suite pass), # or by using a combination of reverse_order, limit, and offset, # e.g., reverse_order.offset(index-1).first end end