socialforge/app/models/student_work_test.rb

# encoding: utf-8
class StudentWorkTest < ActiveRecord::Base
  attr_accessible :student_work_id, :homework_test_id

  belongs_to :homework_test
  belongs_to :student_work

  def status_to_s
    case self.result
      when -1
        '编译出错'
      when -2
        '答题错误'
      when -3
        '答案错误'
      when 1
        '运行出错'
      when 2
        '超时'
      when 3
        '内存超出'
      when 4
        '输出超出'
      when 5
        '禁用函数'
      when 6
        '其他错误'
      when 0
        '成功'
      else
        '未知错误'
    end
  end

  def test_score
    if self.result == 0
      format("%.1f",100.0 / self.student_work.homework_common.homework_tests.count)
    else
      0
    end
  end
end