同步课堂的学生作品数据

lib/tasks/migrate_course_student_work.rake

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+# 执行示例  bundle exec rake migrate_course_student_work:homework args=2933
+desc "创建课堂学生的作业数据"
+
+namespace :migrate_course_student_work do
+  if ENV['args']
+    course_id = ENV['args'].split(",")[0] # 对应课堂的id
+  end
+
+  task homework: :environment do
+    course = Course.find_by(id: course_id)
+    if course.present?
+      student_ids = course.students.pluck(:user_id)
+
+      # 如果之前存在相关作品，则更新is_delete字段
+      student_works = StudentWork.joins(:homework_common).where(user_id: student_ids, homework_commons: {course_id: course.id})
+      student_works.update_all(is_delete: 0)
+
+      attrs = %i[homework_common_id user_id created_at updated_at]
+
+      StudentWork.bulk_insert(*attrs) do |worker|
+        student_ids.each do |user_id|
+          same_attrs = {user_id: user_id}
+          course.homework_commons.where(homework_type: %i[normal group practice]).each do |homework|
+            next if StudentWork.where(user_id: user_id, homework_common_id: homework.id).any?
+            worker.add same_attrs.merge(homework_common_id: homework.id)
+          end
+        end
+      end
+    end
+  end
+end