socialforge/app/models/student_work.rb

150 lines
8.4 KiB
Ruby

#学生提交作品表
class StudentWork < ActiveRecord::Base
attr_accessible :name, :description, :homework_common_id, :user_id, :final_score, :teacher_score, :student_score, :teaching_asistant_score, :project_id, :is_test
belongs_to :homework_common
belongs_to :user
has_many :student_works_evaluation_distributions, :dependent => :destroy
has_many :student_works_scores, :dependent => :destroy
belongs_to :project
has_many :student_work_tests, order: 'id desc'
# course's message
has_many :course_messages, :class_name =>'CourseMessage', :as => :course_message, :dependent => :destroy
before_destroy :delete_praise
before_save :set_program_score, :set_src
after_create :act_as_message
acts_as_attachable
def delete_praise
PraiseTread.where("praise_tread_object_id = #{self.id} AND praise_tread_object_type = 'StudentWork'").destroy_all
end
def last_test
student_work_tests.order('id desc').first
end
private
def set_program_score
if homework_common.is_program_homework? #编程作业,学生提交作品后计算系统得分
#根据最后一次测试计算得分
unless last_test
self.system_score = 0
else
self.system_score = last_test.test_score
end
end
set_final_score self.homework_common,self
end
def set_src
self.description = last_test.src if last_test
end
#成绩计算
def set_final_score homework,student_work
if homework && homework.homework_detail_manual
if homework.homework_type == 1 #匿评作业
if homework.teacher_priority == 1 #教师优先
if student_work.teacher_score
student_work.final_score = student_work.teacher_score
else
if student_work.teaching_asistant_score.nil?
student_work.final_score = student_work.student_score
elsif student_work.student_score.nil?
student_work.final_score = student_work.teaching_asistant_score
else
ta_proportion = homework.homework_detail_manual.ta_proportion
final_ta_score = BigDecimal.new("#{student_work.teaching_asistant_score}") * BigDecimal.new("#{ta_proportion}")
final_s_score = BigDecimal.new("#{student_work.student_score}") * (BigDecimal.new('1.0') - BigDecimal.new("#{ta_proportion}"))
final_score = final_ta_score + final_s_score
student_work.final_score = format("%.2f",final_score.to_f)
end
end
else #不考虑教师评分
if student_work.teaching_asistant_score.nil?
student_work.final_score = student_work.student_score
elsif student_work.student_score.nil?
student_work.final_score = student_work.teaching_asistant_score
else
ta_proportion = homework.homework_detail_manual.ta_proportion
final_ta_score = BigDecimal.new("#{student_work.teaching_asistant_score}") * BigDecimal.new("#{ta_proportion}")
final_s_score = BigDecimal.new("#{student_work.student_score}") * (BigDecimal.new('1.0') - BigDecimal.new("#{ta_proportion}"))
final_score = final_ta_score + final_s_score
student_work.final_score = format("%.2f",final_score.to_f)
end
end
elsif homework.homework_type == 2 && homework.homework_detail_programing #编程作业-----设定:系统评分必定不为空
if homework.teacher_priority == 1 #教师优先
if student_work.teacher_score
student_work.final_score = student_work.teacher_score
else
if student_work.teaching_asistant_score.nil? #教辅未评分
if student_work.student_score.nil?
student_work.final_score = student_work.system_score
else
ta_proportion = homework.homework_detail_programing.ta_proportion + homework.homework_detail_manual.ta_proportion / 2
final_sy_score = BigDecimal.new("#{student_work.system_score || 0}") * BigDecimal.new("#{ta_proportion}")
final_st_score = BigDecimal.new("#{student_work.student_score}") * (BigDecimal.new('1.0') - BigDecimal.new("#{ta_proportion}"))
final_score = final_sy_score + final_st_score
student_work.final_score = format("%.2f",final_score.to_f)
end
elsif student_work.student_score.nil? #学生未评分
if student_work.teaching_asistant_score.nil?
student_work.final_score = student_work.system_score
else
ta_proportion = homework.homework_detail_programing.ta_proportion + (1.0 - homework.homework_detail_manual.ta_proportion - homework.homework_detail_programing.ta_proportion) / 2
final_sy_score = BigDecimal.new("#{student_work.system_score || 0}") * BigDecimal.new("#{ta_proportion}")
final_ts_score = BigDecimal.new("#{student_work.teaching_asistant_score}") * (BigDecimal.new('1.0') - BigDecimal.new("#{ta_proportion}"))
final_score = final_sy_score + final_ts_score
student_work.final_score = format("%.2f",final_score.to_f)
end
else
final_sy_score = BigDecimal.new("#{student_work.system_score || 0}") * BigDecimal.new("#{homework.homework_detail_programing.ta_proportion}")
final_ts_score = BigDecimal.new("#{student_work.teaching_asistant_score}") * BigDecimal.new("#{homework.homework_detail_manual.ta_proportion}")
final_st_score = BigDecimal.new("#{student_work.student_score}") * (BigDecimal.new('1.0') - BigDecimal.new("#{homework.homework_detail_programing.ta_proportion}") - BigDecimal.new("#{homework.homework_detail_manual.ta_proportion}"))
final_score = final_sy_score + final_ts_score + final_st_score
student_work.final_score = format("%.2f",final_score.to_f)
end
end
else #不考虑教师评分
if student_work.teaching_asistant_score.nil? #教辅未评分
if student_work.student_score.nil?
student_work.final_score = student_work.system_score
else
ta_proportion = homework.homework_detail_programing.ta_proportion + homework.homework_detail_manual.ta_proportion / 2
final_sy_score = BigDecimal.new("#{student_work.system_score || 0}") * BigDecimal.new("#{ta_proportion}")
final_st_score = BigDecimal.new("#{student_work.student_score}") * (BigDecimal.new('1.0') - BigDecimal.new("#{ta_proportion}"))
final_score = final_sy_score + final_st_score
student_work.final_score = format("%.2f",final_score.to_f)
end
elsif student_work.student_score.nil? #学生未评分
if student_work.teaching_asistant_score.nil?
student_work.final_score = student_work.system_score
else
ta_proportion = homework.homework_detail_programing.ta_proportion + (1.0 - homework.homework_detail_manual.ta_proportion - homework.homework_detail_programing.ta_proportion) / 2
final_sy_score = BigDecimal.new("#{student_work.system_score || 0}") * BigDecimal.new("#{ta_proportion}")
final_ts_score = BigDecimal.new("#{student_work.teaching_asistant_score}") * (BigDecimal.new('1.0') - BigDecimal.new("#{ta_proportion}"))
final_score = final_sy_score + final_ts_score
student_work.final_score = format("%.2f",final_score.to_f)
end
else
final_sy_score = BigDecimal.new("#{student_work.system_score || 0}") * BigDecimal.new("#{homework.homework_detail_programing.ta_proportion}")
final_ts_score = BigDecimal.new("#{student_work.teaching_asistant_score}") * BigDecimal.new("#{homework.homework_detail_manual.ta_proportion}")
final_st_score = BigDecimal.new("#{student_work.student_score}") * (BigDecimal.new('1.0') - BigDecimal.new("#{homework.homework_detail_programing.ta_proportion}") - BigDecimal.new("#{homework.homework_detail_manual.ta_proportion}"))
final_score = final_sy_score + final_ts_score + final_st_score
student_work.final_score = format("%.2f",final_score.to_f)
end
end
end
end
end
# status == 0 : delay
def act_as_message
if self.created_at > self.homework_common.end_time + 1
self.course_messages << CourseMessage.new(:user_id => self.user_id, :course_id => self.homework_common.course_id, :viewed => false, :status => false)
end
end
end