From a52633e9e3af5ea5998caf9a2e92138664448d11 Mon Sep 17 00:00:00 2001
From: cxt <853663049@qq.com>
Date: Mon, 4 Nov 2019 21:32:49 +0800
Subject: [PATCH] =?UTF-8?q?=E8=B0=83=E6=95=B4?=
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---
 ...91104132649_migrate_2796_exercise_score.rb | 60 +++++++++++++++++++
 1 file changed, 60 insertions(+)
 create mode 100644 db/migrate/20191104132649_migrate_2796_exercise_score.rb

diff --git a/db/migrate/20191104132649_migrate_2796_exercise_score.rb b/db/migrate/20191104132649_migrate_2796_exercise_score.rb
new file mode 100644
index 000000000..375116e94
--- /dev/null
+++ b/db/migrate/20191104132649_migrate_2796_exercise_score.rb
@@ -0,0 +1,60 @@
+class Migrate2796ExerciseScore < ActiveRecord::Migration[5.2]
+  def calculate_student_score(exercise,user)
+    score1 = 0.0  #实训题
+    exercise_questions = exercise.exercise_questions.includes(:exercise_standard_answers)
+    exercise_questions.each do |q|
+      answers_content = q.exercise_answers.where(user_id: user.id)  #学生的答案
+      if q.question_type <= 2  #为选择题或判断题时
+        if answers_content.present?   #学生有回答时
+          answer_choice_array = []
+          answers_content.each do |a|
+            answer_choice_array.push(a.exercise_choice.choice_position)  #学生答案的位置
+          end
+          user_answer_content = answer_choice_array.sort
+          standard_answer = q.exercise_standard_answers.pluck(:exercise_choice_id).sort  #该问题的标准答案，可能有多个
+
+          #TODO: 旧版多选题的标准答案是放在一个里面的，新版又做成了一个题有多个标准答案（exercise_choice_id存放的是标准答案的位置..）
+          if q.question_type == 1 && standard_answer.size == 1
+            standard_answer = standard_answer.first.to_s.split("").map(&:to_i).sort
+          end
+
+          if user_answer_content == standard_answer  #答案一致,多选或单选才给分，答案不对不给分
+            if standard_answer.size > 0
+              q_score_1 = q.question_score
+              # q_score_1 = (q.question_score.to_f / standard_answer.count)   #当多选答案正确时，每个answer的分数均摊。
+            else
+              q_score_1 = 0.0
+            end
+            answers_content.update_all(:score => q_score_1)
+            score1 = score1 + q.question_score
+          else
+            answers_content.update_all(:score => -1.0)
+            score1 += 0.0
+          end
+        else
+          score1 += 0.0
+        end
+      end
+    end
+    score1
+  end
+
+  def change
+    exercise = Exercise.find_by(id: 2796)
+    if exercise
+      exercise_users = exercise.exercise_users.where("start_at is not null and commit_status = 0")
+      exercise_users.each do |exercise_user|
+        calculate_score = calculate_student_score(exercise, exercise_user.user)
+        subjective_score = exercise_user.subjective_score
+        total_score_subjective_score = subjective_score < 0.0 ? 0.0 : subjective_score
+        total_score = calculate_score + total_score_subjective_score
+        if exercise_user.end_at.nil?
+          exercise_user.update_attributes!(score:total_score,objective_score:calculate_score,end_at:exercise.end_time,commit_status:1,status:1,commit_method:3)
+        else
+          exercise_user.update_attributes!(score:total_score,objective_score:calculate_score)
+        end
+        puts exercise_user.id
+      end
+    end
+  end
+end