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module Paginable
extend ActiveSupport::Concern
included do
def self.paginate_by_max_id(limit, max_id = nil, since_id = nil)
query = order('id desc').limit(limit)
query = query.where('id < ?', max_id) unless max_id.blank?
query = query.where('id > ?', since_id) unless since_id.blank?
query
end
end
end
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