educoder/app/models/ec_score_level.rb

class EcScoreLevel < ApplicationRecord
  belongs_to :ec_course

  default_scope { order(position: :asc) }

  def compare_condition
    max_position = self.class.maximum(:position)
    # 特殊情况：只有一条记录
    position < max_position || max_position == 1 ? 'not_less_than' : 'less_than'
  end
end