191 lines
12 KiB
Ruby
191 lines
12 KiB
Ruby
#学生提交作品表 #work_status :0 未提交 1 已提交 2 迟交 3 分组作品复制的组员作品
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class StudentWork < ActiveRecord::Base
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attr_accessible :name, :description, :homework_common_id, :user_id, :final_score, :teacher_score, :student_score, :teaching_asistant_score, :system_score, :work_score, :project_id, :is_test, :simi_id, :simi_value, :work_status, :commit_time, :late_penalty, :absence_penalty, :re_commit
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belongs_to :homework_common
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belongs_to :user
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has_many :student_work_projects, :dependent => :destroy
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has_many :student_works_evaluation_distributions, :dependent => :destroy
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has_many :student_works_scores, :dependent => :destroy
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belongs_to :project
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has_many :student_work_tests, order: 'id desc'
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# course's message
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has_many :course_messages, :class_name =>'CourseMessage', :as => :course_message, :dependent => :destroy
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has_many :attachments, :dependent => :destroy
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scope :has_committed, lambda{where("work_status != 0 and work_status != 3")}
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scope :no_copy, lambda{where("work_status != 3")}
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before_destroy :delete_praise
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before_save :set_program_score, :set_src
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after_save :update_avg_sum_score
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after_create :act_as_message
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acts_as_attachable
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def delete_praise
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PraiseTread.where("praise_tread_object_id = #{self.id} AND praise_tread_object_type = 'StudentWork'").destroy_all
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end
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def last_test
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student_work_tests.order('id desc').first
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end
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private
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def set_program_score
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if self.homework_common.is_program_homework? #编程作业，学生提交作品后计算系统得分
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#根据最后一次测试计算得分
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unless last_test
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self.system_score = 0
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else
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self.system_score = last_test.test_score self.homework_common.homework_tests.size
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end
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end
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set_final_score self.homework_common,self
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end
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def set_src
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self.description = last_test.src if last_test
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end
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#成绩计算
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def set_final_score homework,student_work
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if homework && homework.homework_detail_manual
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tea_ass_proportion = homework.homework_detail_manual.ta_proportion
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tea_proportion = homework.homework_detail_manual.te_proportion
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if homework.homework_type != 2 #非编程作业
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if student_work.teacher_score
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if student_work.teaching_asistant_score.nil?
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if student_work.student_score.nil?
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student_work.final_score = student_work.teacher_score
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else
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te_proportion = tea_proportion + tea_ass_proportion / 2
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final_te_score = BigDecimal.new("#{student_work.teacher_score}") * BigDecimal.new("#{te_proportion}")
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final_s_score = BigDecimal.new("#{student_work.student_score}") * (BigDecimal.new('1.0') - BigDecimal.new("#{te_proportion}"))
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final_score = final_te_score + final_s_score
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student_work.final_score = format("%.2f",final_score.to_f)
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end
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else
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if student_work.student_score.nil?
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te_proportion = tea_proportion + (1.0 - tea_proportion - tea_ass_proportion) / 2
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final_te_score = BigDecimal.new("#{student_work.teacher_score}") * BigDecimal.new("#{te_proportion}")
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final_ta_score = BigDecimal.new("#{student_work.teaching_asistant_score}") * (BigDecimal.new('1.0') - BigDecimal.new("#{te_proportion}"))
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final_score = final_te_score + final_ta_score
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student_work.final_score = format("%.2f",final_score.to_f)
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else
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final_te_score = BigDecimal.new("#{student_work.teacher_score}") * BigDecimal.new("#{tea_proportion}")
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final_ta_score = BigDecimal.new("#{student_work.teaching_asistant_score}") * BigDecimal.new("#{tea_ass_proportion}")
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final_s_score = BigDecimal.new("#{student_work.student_score}") * (BigDecimal.new('1.0') - BigDecimal.new("#{tea_proportion}") - BigDecimal.new("#{tea_ass_proportion}"))
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final_score = final_te_score + final_ta_score + final_s_score
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student_work.final_score = format("%.2f",final_score.to_f)
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end
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end
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else
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if student_work.teaching_asistant_score.nil?
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student_work.final_score = student_work.student_score
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elsif student_work.student_score.nil?
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student_work.final_score = student_work.teaching_asistant_score
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else
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ta_proportion = tea_ass_proportion + tea_proportion / 2
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final_ta_score = BigDecimal.new("#{student_work.teaching_asistant_score}") * BigDecimal.new("#{ta_proportion}")
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final_s_score = BigDecimal.new("#{student_work.student_score}") * (BigDecimal.new('1.0') - BigDecimal.new("#{ta_proportion}"))
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final_score = final_ta_score + final_s_score
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student_work.final_score = format("%.2f",final_score.to_f)
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end
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end
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elsif homework.homework_type == 2 && homework.homework_detail_programing #编程作业-----设定：系统评分必定不为空
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#if homework.teacher_priority == 1 #教师优先
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sy_proportion = homework.homework_detail_programing.ta_proportion
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if student_work.teacher_score
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if student_work.teaching_asistant_score.nil? #教辅未评分
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if student_work.student_score.nil?
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ta_proportion = tea_proportion + (1 - tea_proportion - sy_proportion) / 2
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final_te_score = BigDecimal.new("#{student_work.teacher_score}") * BigDecimal.new("#{ta_proportion}")
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final_sy_score = BigDecimal.new("#{student_work.system_score || 0}") * (BigDecimal.new('1.0') - BigDecimal.new("#{ta_proportion}"))
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final_score = final_sy_score + final_te_score
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student_work.final_score = format("%.2f",final_score.to_f)
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else
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rest_proportion = tea_ass_proportion / 3
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final_sy_score = BigDecimal.new("#{student_work.system_score || 0}") * BigDecimal.new("#{sy_proportion + rest_proportion}")
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final_te_score = BigDecimal.new("#{student_work.teacher_score}") * BigDecimal.new("#{tea_proportion + rest_proportion}")
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final_st_score = BigDecimal.new("#{student_work.student_score}") * (BigDecimal.new('1.0') - BigDecimal.new("#{sy_proportion + rest_proportion}") - BigDecimal.new("#{tea_proportion + rest_proportion}"))
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final_score = final_sy_score + final_te_score + final_st_score
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student_work.final_score = format("%.2f",final_score.to_f)
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end
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elsif student_work.student_score.nil? #学生未评分
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rest_proportion = (1 - tea_proportion - sy_proportion - tea_ass_proportion) / 3
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final_sy_score = BigDecimal.new("#{student_work.system_score || 0}") * BigDecimal.new("#{sy_proportion + rest_proportion}")
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final_te_score = BigDecimal.new("#{student_work.teacher_score}") * BigDecimal.new("#{tea_proportion + rest_proportion}")
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final_ta_score = BigDecimal.new("#{student_work.teaching_asistant_score}") * (BigDecimal.new('1.0') - BigDecimal.new("#{sy_proportion + rest_proportion}") - BigDecimal.new("#{tea_proportion + rest_proportion}"))
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final_score = final_sy_score + final_te_score + final_ta_score
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student_work.final_score = format("%.2f",final_score.to_f)
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else
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final_sy_score = BigDecimal.new("#{student_work.system_score || 0}") * BigDecimal.new("#{sy_proportion}")
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final_te_score = BigDecimal.new("#{student_work.teacher_score}") * BigDecimal.new("#{tea_proportion}")
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final_ta_score = BigDecimal.new("#{student_work.teaching_asistant_score}") * BigDecimal.new("#{tea_ass_proportion}")
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final_s_score = BigDecimal.new("#{student_work.student_score}") * (BigDecimal.new('1.0') - BigDecimal.new("#{sy_proportion}") - BigDecimal.new("#{tea_proportion}") - BigDecimal.new("#{tea_ass_proportion}"))
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final_score = final_sy_score + final_ta_score + final_te_score + final_st_score
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student_work.final_score = format("%.2f",final_score.to_f)
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end
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else
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if student_work.teaching_asistant_score.nil? #教辅未评分
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if student_work.student_score.nil?
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student_work.final_score = student_work.system_score
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else
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ta_proportion = sy_proportion + (tea_ass_proportion + tea_proportion) / 2
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final_sy_score = BigDecimal.new("#{student_work.system_score || 0}") * BigDecimal.new("#{ta_proportion}")
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final_st_score = BigDecimal.new("#{student_work.student_score}") * (BigDecimal.new('1.0') - BigDecimal.new("#{ta_proportion}"))
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final_score = final_sy_score + final_st_score
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student_work.final_score = format("%.2f",final_score.to_f)
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end
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elsif student_work.student_score.nil? #学生未评分
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if student_work.teaching_asistant_score.nil?
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student_work.final_score = student_work.system_score
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else
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ta_proportion = sy_proportion + (1.0 - tea_ass_proportion - sy_proportion) / 2
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final_sy_score = BigDecimal.new("#{student_work.system_score || 0}") * BigDecimal.new("#{ta_proportion}")
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final_ts_score = BigDecimal.new("#{student_work.teaching_asistant_score}") * (BigDecimal.new('1.0') - BigDecimal.new("#{ta_proportion}"))
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final_score = final_sy_score + final_ts_score
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student_work.final_score = format("%.2f",final_score.to_f)
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end
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else
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rest_proportion = tea_proportion / 3
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final_sy_score = BigDecimal.new("#{student_work.system_score || 0}") * BigDecimal.new("#{sy_proportion + rest_proportion}")
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final_ts_score = BigDecimal.new("#{student_work.teaching_asistant_score}") * BigDecimal.new("#{tea_ass_proportion + rest_proportion}")
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final_st_score = BigDecimal.new("#{student_work.student_score}") * (BigDecimal.new('1.0') - BigDecimal.new("#{sy_proportion + rest_proportion}") - BigDecimal.new("#{tea_ass_proportion + rest_proportion}"))
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final_score = final_sy_score + final_ts_score + final_st_score
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student_work.final_score = format("%.2f",final_score.to_f)
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end
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end
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end
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if student_work.final_score
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score = student_work.final_score - student_work.absence_penalty - student_work.late_penalty - student_work.appeal_penalty
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student_work.work_score = format("%.2f",(score < 0 ? 0 : score).to_f) if score
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else
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student_work.work_score = nil
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end
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end
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end
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#更新course_homework_statistics中的avg_score和total_score
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def update_avg_sum_score
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course_homework_statistics = CourseHomeworkStatistics.where(:user_id => self.user_id, :course_id => self.homework_common.course_id).first
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if course_homework_statistics
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course = self.homework_common.course
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homework_ids = course.homework_commons.empty? ? "(-1)" : "(" + course.homework_commons.map{|hw| hw.id}.join(",") + ")"
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student_works = StudentWork.where("homework_common_id in #{homework_ids} and work_status !=0")
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user = self.user
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average_score = user.student_works.where(:id => student_works.map(&:id)).select("AVG(student_works.work_score) as score").first ? user.student_works.where(:id => student_works.map(&:id)).select("AVG(student_works.work_score) as score").first.score : 0
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total_score = user.student_works.where(:id => student_works.map(&:id)).select("SUM(student_works.work_score) as score").first ? user.student_works.where(:id => student_works.map(&:id)).select("SUM(student_works.work_score) as score").first.score : 0
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course_homework_statistics.update_attributes(:average_score => average_score, :total_score => total_score)
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end
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end
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# status == 0 : delay
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def act_as_message
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if self.work_status != 0 && self.created_at > self.homework_common.end_time
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self.course_messages << CourseMessage.new(:user_id => self.user_id, :course_id => self.homework_common.course_id, :viewed => false, :status => false)
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end
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end
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end
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