数据

app/models/user.rb

@@ -43,6 +43,7 @@ class User < ApplicationRecord
   has_many :shixun_members, :dependent => :destroy
   has_many :shixuns, :through => :shixun_members
   has_many :myshixuns, :dependent => :destroy
+  has_many :games, :dependent => :destroy
   has_many :study_shixuns, through: :myshixuns, source: :shixun   # 已学习的实训
   has_many :course_messages
   has_many :courses, foreign_key: 'tea_id', dependent: :destroy

app/services/subjects/user_used_info_service.rb

@@ -0,0 +1,30 @@
+class Subject::UserUsedInfoService < ApplicationService
+  attr_reader :subject, :shixun_ids
+
+  def initialize(subject)
+    @subject = subject
+    @shixun_ids = subject.shixuns.pluck(:id)
+
+  end
+
+  def call
+    users = User.joins(:myshixuns).where(myshixuns: {shixun_id: shixun_ids}).group(:user_id)
+
+    users_info = []
+    users.includes(:myshixuns, :games).each do |user|
+      games = user.games
+      name = "#{user.lastname}#{user.firstname}"
+      passed_myshixun_count = user.myshixuns.select{|m| m.status == 1}.size
+      passed_games_count = games.select{|g| g.status == 2}.size
+      code_line_count = "未完成"
+      evaluate_count =  games.sum(evaluate_count)
+      cost_time = games.sum(:cost_time)
+      user_login = user.login
+      users_info << {login: user_login, name: name, passed_myshixun_count: passed_myshixun_count,
+                     passed_games_count: passed_games_count, code_line_count: code_line_count,
+                     evaluate_count: evaluate_count, cost_time: cost_time}
+    end
+    users_info
+  end
+
+end