ActiveRecord patch for #last/#first on collection using UUID (PostgreSQL)

active_record_finders.rb

require 'active_record'

message = '[ActiveRecord::FinderMethods] Applying patch for #last/#first on collection using UUID'
# rubocop:disable Rails/Output
puts message
# rubocop:enable Rails/Output

# Please read this
# https://github.com/rails/rails/blob/24d82063bcc86a86eb8c8717d74c0c7340e209e6/activerecord/lib/active_record/relation/finder_methods.rb#L479

module ActiveRecord
  module FinderMethods
    def last(limit = nil)
      if limit
        if order_values.empty? && primary_key
          order(arel_table[:created_at].desc).limit(limit).reverse
        else
          to_a.last(limit)
        end
      else
        find_last
      end
    end

    def find_nth_with_limit(offset, limit)
      if order_values.empty? && primary_key
        order(arel_table[:created_at].asc).limit(limit).offset(offset).to_a
      else
        limit(limit).offset(offset).to_a
      end
    end

    def find_last
      if loaded?
        @records.last
      else
        @last ||=
          if limit_value
            to_a.last
          else
            order(arel_table[:created_at].desc).limit(1).to_a.first
          end
      end
    end
  end
end