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# encoding: utf-8
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module ExerciseHelper
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def shixun_question_level level
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case level
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when 1
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"初级题"
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when 2
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"中级题"
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when 3
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"高级题"
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when 4
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"顶级题"
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end
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end
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def exercise_shixun_json_data shixuns
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shixuns.map do |shixun|
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shixun_owner = shixun.owner.try(:show_name)
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shixun_path = shixun_path(shixun)
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shixun_level = shixun.shixun_level
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owner_path = user_path(shixun.owner)
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shixun.attributes.dup.except("gpid", "identifier", "major_id", "webssh", "homepage_show", "fork_from", "git_url",
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"mirror_script_id", "repo_name", "pod_life").merge({
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shixun_owner: shixun_owner,
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shixun_level: shixun_level,
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shixun_path: shixun_path,
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owner_path: owner_path
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})
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end
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end
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def un_commit_num exercise
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course = exercise.course
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member = course.members.where(:user_id => User.current.id).first
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exercise_users = exercise.exercise_users
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student_count = course.student.count
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if member.present? && member.teacher_course_groups.count > 0
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group_students = course.members.where(:course_group_id => member.teacher_course_groups.pluck(:course_group_id)).map(&:user_id)
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student_count = group_students.size
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exercise_users = exercise_users.where(:user_id => group_students)
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end
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student_count - exercise_users.where(:commit_status => 1, :user_id => course.student.map(&:student_id)).count
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end
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def has_commit_num exercise
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course = exercise.course
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member = course.members.where(:user_id => User.current.id).first
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exercise_users = exercise.exercise_users
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if member.present? && member.teacher_course_groups.count > 0
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group_students = course.members.where(:course_group_id => member.teacher_course_groups.pluck(:course_group_id)).map(&:user_id)
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exercise_users = exercise_users.where(:user_id => group_students)
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end
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exercise_users.where(:commit_status => 1, :user_id => course.student.map(&:student_id)).count
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end
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def un_comment_num exercise
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course = exercise.course
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member = course.members.where(:user_id => User.current.id).first
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exercise_users = exercise.exercise_users
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if member.present? && member.teacher_course_groups.count > 0
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group_students = course.members.where(:course_group_id => member.teacher_course_groups.pluck(:course_group_id)).map(&:user_id)
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exercise_users = exercise_users.where(:user_id => group_students)
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end
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exercise_users.where(:commit_status => 1, :subjective_score => -1).count
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end
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def has_comment_num exercise
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course = exercise.course
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member = course.members.where(:user_id => User.current.id).first
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exercise_users = exercise.exercise_users
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if member.present? && member.teacher_course_groups.count > 0
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group_students = course.members.where(:course_group_id => member.teacher_course_groups.pluck(:course_group_id)).map(&:user_id)
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exercise_users = exercise_users.where(:user_id => group_students)
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end
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exercise_users.where("commit_status = 1 and subjective_score != -1").count
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end
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def answer_is_correct eq, user
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is_correct = false
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case eq.question_type
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when 1
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answer = get_user_answer(eq, user)
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standard_answer = get_user_standard_answer(eq, user)
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is_correct = !answer.empty? && !standard_answer.empty? && answer.first.exercise_choice.choice_position == standard_answer.first.exercise_choice_id
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when 2
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standard_answer = get_user_standard_answer(eq, user)
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is_correct = !standard_answer.empty? && get_mulscore(eq, user).to_i == standard_answer.first.exercise_choice_id
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when 3
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answer = get_user_answer(eq, user)
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standard_answer = get_user_standard_answer(eq, user)
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is_correct = !answer.empty? && !standard_answer.empty? && standard_answer.collect{|answer| answer.strip}.include?(answer.first.answer_text.strip.downcase)
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when 5
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is_correct = eq.exercise_shixun_answers.where(:status => 1, :user_id => user.id).count == eq.shixun.challenges.count
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end
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is_correct
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end
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def question_correct_rate eq, user_ids
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count = 0
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rate = 0
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user_ids_str = user_ids.length == 0 ? "(-1)" : "("+user_ids.join(",")+")"
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user_ids.each do |user_id|
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user = User.where(:id => user_id).first
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case eq.question_type
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when 1, 2, 3
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if user && answer_is_correct(eq, user)
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count += 1
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end
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rate = user_ids.length == 0 ? 0 : count.to_f / user_ids.length
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when 4
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rate = user_ids.length * eq.question_score > 0 ? eq.exercise_answers.where("user_id in #{user_ids_str} and score <> -1").collect(&:score).sum.to_f / (user_ids.length * eq.question_score) : 0
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when 5
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rate = user_ids.length * eq.question_score > 0 ? eq.exercise_shixun_answers.where("user_id in #{user_ids_str}").collect(&:score).sum.to_f / (user_ids.length * eq.question_score) : 0
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end
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end
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rate = format("%.1f", rate*100)
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end
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#多选的时候查询去重
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def total_answer id, user_ids
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user_ids = user_ids.blank? ? "(-1)" : "(" + user_ids.join(",") + ")"
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total = ExerciseAnswer.find_by_sql("SELECT distinct(user_id) FROM `exercise_answers` where exercise_question_id = #{id} and user_id in #{user_ids}").count
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end
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def shixun_question_score eq, user
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score = 0
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if eq.question_type == 5
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eq.exercise_shixun_answers.where(:user_id => user.id).each do |answer|
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score += answer.score
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end
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end
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score
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end
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# 单选
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def sigle_selection_standard_answer(params)
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size = params.ord - 96
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if size > 0 # 小写字母答案
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answer = params.ord - 96
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else
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answer = params.ord - 64
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end
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end
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# 多选
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def multiselect_standard_answer(params)
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size = params.ord - 96
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answer = []
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if size > 0 # 小写字母答案
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for i in 0..(params.length-1)
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answer << (params[i].ord - 96).to_s
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end
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else
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for i in 0..(params.length-1)
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answer << (params[i].ord - 64)
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end
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end
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answer = answer.sort
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answer.join("")
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end
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#
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def fill_standart_answer(params, standart_answer)
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params.each do |param|
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standart_answer.answer_text = param.value
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standart_answer.save
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end
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end
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# 获取多选的得分
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def get_mulscore(question, user)
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ecs = ExerciseAnswer.where("user_id =? and exercise_question_id =?", user.id, question.id)
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arr = []
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ecs.each do |ec|
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arr << ec.exercise_choice.choice_position
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end
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#arr = arr.sort
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str = arr.sort.join("")
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return str
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end
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# 判断用户是否已经提交了问卷
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# status 为0的时候是用户点击试卷。为1表示用户已经提交
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def has_commit_exercise?(exercise_id, user_id)
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pu = ExerciseUser.where("exercise_id=? and user_id=? and status=?",exercise_id, user_id, true)
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if pu.empty?
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false
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else
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true
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end
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end
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def can_edit_exercise exercise, exercise_user
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exercise_end = exercise.end_time.nil? ? false : exercise.end_time > Time.now
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if exercise.time == -1
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can_edit_excercise = exercise_end && exercise_user.commit_status == 0
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else
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left_time = (Time.now.to_i - exercise_user.start_at.to_i) < exercise.time.to_i * 60
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can_edit_excercise = !exercise_user.status && left_time && exercise_end
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end
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can_edit_excercise
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end
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# 判断学生是否点击过问卷，点击则为他保存一个记录，记录start_at
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def has_click_exercise?(exercise_id, user_id)
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pu = ExerciseUser.where("exercise_id=? and user_id=? and status=?",exercise_id, user_id, false)
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if pu.empty?
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false
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else
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true
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end
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end
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def convert_to_char(str)
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result = ""
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length = str.length
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unless str.nil?
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if length === 1
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result += (str.to_i + 64).chr
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return result
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elsif length > 1
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for i in 0...length
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result += (str[i].to_i + 64).chr
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end
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return result
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end
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end
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return result
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end
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def convert_to_chi_num num
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result = ""
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case num.to_i
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when 1
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result = '一'
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when 2
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result = '二'
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when 3
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result = '三'
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when 4
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result = '四'
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when 5
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result = '五'
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when 6
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result = '六'
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when 7
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result = '七'
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when 8
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result = '八'
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when 9
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result = '九'
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end
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return result
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end
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def get_current_score exercise
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total_score = 0
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mc_score = 0
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mcq_score = 0
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single_score = 0
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multi_score = 0
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shixun_score = 0
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unless exercise.nil?
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exercise.exercise_questions.each do |exercise_question|
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unless exercise_question.question_score.nil?
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total_score += exercise_question.question_score
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case exercise_question.question_type
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when 1
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mc_score += exercise_question.question_score
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when 2
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mcq_score += exercise_question.question_score
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when 3
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single_score += exercise_question.question_score
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when 4
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multi_score += exercise_question.question_score
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when 5
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shixun_score += exercise_question.question_score
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end
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end
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end
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return total_score, mc_score, mcq_score, single_score, multi_score, shixun_score
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end
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return total_score, mc_score, mcq_score, single_score, multi_score, shixun_score
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end
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def answer_be_selected?(answer,user)
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# pv = answer.exercise_answers.where("#{ExerciseAnswer.table_name}.user_id = #{user.id} ")
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pv = answer.exercise_answers.select{|e| e.user_id == user.id}
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if !pv.nil? && pv.size > 0
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true
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else
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false
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end
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end
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#获取未完成的题目
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def get_uncomplete_question exercise, exercise_user
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# all_questions = exercise.exercise_questions.includes(:exercise_answers).where("question_type != 5")
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uncomplete_question = []
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questions = exercise.user_question_list(exercise_user.id)
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questions.includes(:exercise_answers).where("question_type != 5").each do |question|
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# answers = get_user_answer(question, user)
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answers = question.exercise_answers.select{|e| e.user_id == exercise_user.user_id}
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if answers.empty?
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uncomplete_question << question
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end
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end
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uncomplete_question
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end
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# 获取未通关的实训
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def get_uncomplete_shixun exercise, exercise_user
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questions = exercise.user_question_list(exercise_user.try(:id))
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all_questions = questions.where("question_type = 5")
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uncomplete_shixun = []
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all_questions.each do |question|
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myshixun = Myshixun.where(:shixun_id => question.shixun_id, :user_id => user.id).first
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unless myshixun && myshixun.is_complete?
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uncomplete_shixun << question
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end
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end
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uncomplete_shixun
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end
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# 题目已答或未答
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def question_answer_or_not question, user
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if question.question_type == 5
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# is_answer = question.exercise_shixun_answers.where(:user_id => user.id, :status => 1).count > 0
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is_answer = question.exercise_shixun_answers.select{|e| e.user_id == user.id && e.status == 1}.count > 0
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else
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# is_answer = user.exercise_answer.where(:exercise_question_id => question.id).count > 0
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is_answer = question.exercise_answers.select{|e| e.user_id == user.id}.count > 0
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end
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is_answer
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end
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def question_commit_status question, user
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status = ""
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case question.question_type
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when 3, 4
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get_anwser_vote_text(question.id,user.id) == "" ? status = "未答" : status = ""
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when 1, 2
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get_user_answer(question,user).empty? ? status = "未答" : status = ""
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when 5
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question.exercise_shixun_answers.where(:user_id => user.id).empty? ? status = "未答" : status = ""
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end
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status
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end
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# 获取文本题答案
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def get_anwser_vote_text(question_id,user_id)
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pv = ExerciseAnswer.find_by_exercise_question_id_and_user_id(question_id,user_id)
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if pv.nil?
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''
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else
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pv.answer_text
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end
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end
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def new_get_anwser_vote_text question, user
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pv = question.exercise_answers.select{|exercise_answer| exercise_answer.user_id == user.id}
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if pv.blank?
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''
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else
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pv.first.try(:answer_text)
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end
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end
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# 获取当前学生回答问题的答案
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def get_user_answer(question,user)
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user_answer = question.exercise_answers.where("#{ExerciseAnswer.table_name}.user_id = #{user.id}")
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# user_answer = question.exercise_answers.select{|e| e.user_id == user.id}
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user_answer
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end
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# 获取问题的标准答案
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def get_user_standard_answer(question,user)
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if question.question_type == 3
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standard_answer =[]
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question.exercise_standard_answers.each do |answer|
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standard_answer << answer.answer_text.downcase
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end
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else
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standard_answer = question.exercise_standard_answers
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end
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standard_answer
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end
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# 问题随机的下拉列表
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def question_random_select
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type = []
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option1 = []
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option1 << "题目不随机打乱"
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option1 << 0
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type << option1
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option2 = []
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option2 << "题目随机打乱"
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option2 << 1
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type << option2
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end
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# 选项随机的下拉列表
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def choice_random_select
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type = []
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option1 = []
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option1 << "选项不随机打乱"
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option1 << 0
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type << option1
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option2 = []
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option2 << "选项随机打乱"
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option2 << 1
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|
|
type << option2
|
|
|
end
|
|
|
|
|
|
#允许学生查看结果的下拉列表
|
|
|
def show_result_select
|
|
|
type = []
|
|
|
option1 = []
|
|
|
option1 << "允许学生查看测验结果"
|
|
|
option1 << 1
|
|
|
type << option1
|
|
|
option2 = []
|
|
|
option2 << "不允许学生查看测验结果"
|
|
|
option2 << 0
|
|
|
type << option2
|
|
|
end
|
|
|
|
|
|
end |
