app的课程动态界面api修改

添加活跃学生查看，
获取作业的匿评率

app/api/mobile/entities/course_dynamic.rb

@@ -58,10 +58,11 @@ module Mobile
       course_dynamic_expose :document_count
       course_dynamic_expose :topic_count
       course_dynamic_expose :homework_count
-
+      course_dynamic_expose :course_student_num
+      course_dynamic_expose :time_from_now
       course_dynamic_expose :current_user_is_member
       course_dynamic_expose :current_user_is_teacher
-      #在dynamics里解析出四种动态
+
       expose :documents,using:Mobile::Entities::Attachment do |f,opt|
         obj = nil
         f[:dynamics].each do |d|
@@ -110,6 +111,16 @@ module Mobile
         obj
       end
 
+      expose :active_students,using:Mobile::Entities::User do |f,opt|
+        obj = nil
+        f[:dynamics].each do |d|
+          if d[:type] == 7
+            obj =  d[:active_students]
+          end
+        end
+        obj
+      end
+
     end
   end
 end

app/api/mobile/entities/homework.rb

@@ -30,6 +30,13 @@ module Mobile
                     f.course.homework_commons.index(f) + 1
                   when :homework_status_teacher
                     homework_status_desc f
+                  when :student_evaluation_part
+                    get_evaluation_part f ,3
+                  when :ta_evaluation_part
+                    get_evaluation_part f , 2
+                  when :homework_anony_type
+                    val = f.homework_type == 1 && !f.homework_detail_manual.nil?
+                    val
                 end
             end
           end
@@ -79,12 +86,14 @@ module Mobile
       homework_expose :homework_submit_num
       homework_expose :homework_notsubmit_num
 
-      expose :submit_student_list ,using: Mobile::Entities::User do |f,opt|
+      homework_expose :homework_status_student       #学生看到的作业的状态
-        get_submit_sutdent_list f
-      end
-      homework_expose :homework_status_student       #老师看到的作业的状态
       homework_expose :homework_status_teacher  #老师看到的状态
 
+      homework_expose :student_evaluation_part #学生匿评比率
+      homework_expose :ta_evaluation_part #教辅评价比率
+
+      homework_expose :homework_anony_type #是否是匿评作业
+
     end
   end
 end

app/api/mobile/entities/user.rb

@@ -53,6 +53,8 @@ module Mobile
       user_expose :score
       #学号
       user_expose :student_num
+      # 活跃值
+      user_expose :active_count
     end
   end
 

app/helpers/api_helper.rb

@@ -129,9 +129,39 @@ module ApiHelper
   def show_homework_deadline homework
    day = 0
     if (day = (Date.parse(homework.end_time.to_s) - Date.parse(Time.now.to_s)).to_i) > 0
-      "距作业截止还有" << (Date.parse(Time.now.to_s) - Date.parse(homework.end_time.to_s)).to_i.to_s << "天"
+      "距作业截止还有" << day.to_s << "天"
     else
       "已截止，但可补交"
     end
   end
+
+  #获取作业中学生的匿评比率
+  # 匿评比率 = 学生总共评价的作业的作业份数  /  作业份数 * 分配数 * 100%
+  # 教辅匿评比率 = 教辅已经评价的作业份数 / 总的作业份数 * 100%
+  def get_evaluation_part homework,role
+    homework_eva_completed_task_num = 0
+    homework_eva_task_num = 0
+    #匿评作业 # 且匿评状态不是还没有开启匿评
+    if homework.homework_type == 1 && homework.homework_detail_manual &&  homework.homework_detail_manual.comment_status != 1
+      # 总共需要评价的任务数
+      homework_eva_task_num = homework.homework_detail_manual.evaluation_num * homework.student_works.count
+      unless homework_eva_task_num == 0 #总任务数不为0 的情况下
+        #获取已经评价了多少的份作业  student_work_score里记录了评价情况，每条记录有提交作业的id
+        #先求出提交作业的id集合
+        work_ids = "(" + homework.student_works.map(&:id).join(",") + ")"
+        #只要 student_work_score 中的 student_work_id在work_ids集合中，那么久说明这个任务被完成了
+
+        sql = "select count(1) from student_works_scores where reviewer_role = #{role} and  student_work_id in #{work_ids} "
+        homework_eva_completed_task_num = ActiveRecord::Base.connection().select_value(sql)
+      end
+    end
+    if homework_eva_task_num == 0
+      0
+    else
+     ( homework_eva_completed_task_num /  homework_eva_task_num.to_f * 100 ) .round(2)
+    end
+
+  end
+
+
 end

app/services/courses_service.rb

@@ -4,6 +4,7 @@ class CoursesService
   include CoursesHelper
   include HomeworkAttachHelper
   include ApiHelper
+  include ActionView::Helpers::DateHelper
 
   #参数school_id为0或不传时返回所有课程，否则返回对应学校的课程
   #参数per_page_count分页功能，每页显示的课程数
@@ -657,22 +658,12 @@ class CoursesService
     membership.each do |mp|
       course = mp.course
       latest_course_dynamics = []
-      dynamics_count = 0
+
-      # 课程学霸 学生总分数排名靠前的5个人
-      homework_count = course.homework_commons.count
-      sql = "select users.*,sum(IFNULL(0,student_works.final_score))/#{homework_count} score from student_works left outer join users on student_works.user_id = users.id" <<
-         " where  homework_common_id in ( select id from homework_commons where homework_commons.course_id = #{course.id}) GROUP BY student_works.user_id ORDER BY score limit 0,6"
-      better_students = User.find_by_sql(sql)
-      if homework_count != 0  &&  !better_students.empty?
-         latest_course_dynamics <<{:type=> 6,:time=>Time.now.to_s,:count=> 6,:better_students=> better_students}
-         dynamics_count += 1
-      end
       # 课程通知
       latest_news = course.news.page(1).per(2).order("created_on desc")
       unless latest_news.first.nil?
         latest_course_dynamics << {:type => 1, :time => latest_news.first.created_on,:count=>course.news.count,
                                     :news => latest_news.all}
-        dynamics_count += 1
       end
 
       # 课程讨论区
@@ -694,12 +685,31 @@ class CoursesService
       homeworks = course.homework_commons.page(1).per(2).order('created_at desc')
       unless homeworks.first.nil?
         latest_course_dynamics << {:type => 4, :time => homeworks.first.updated_at, :count=>course.homework_commons.count , :homeworks => homeworks}
-        dynamics_count += 1
       end
       latest_course_dynamics.sort! { |order, newer| newer[:time] <=> order[:time] }
+      # 课程学霸 学生总分数排名靠前的5个人
+      homework_count = course.homework_commons.count
+      sql = "select users.*,sum(IFNULL(0,student_works.final_score))/#{homework_count} score from student_works left outer join users on student_works.user_id = users.id" <<
+          " where  homework_common_id in ( select id from homework_commons where homework_commons.course_id = #{course.id}) GROUP BY student_works.user_id ORDER BY score limit 0,4"
+      better_students = User.find_by_sql(sql)
+      # 找出在课程讨论区发帖回帖数最多的
+      active_students = []
+      sql1 = " select users.*,count(author_id) active_count from messages " <<
+          " LEFT JOIN users on messages.author_id = users.id " <<
+          " where messages.board_id in (select id from boards where boards.course_id = #{course.id} ) " <<
+          " GROUP BY messages.author_id ORDER BY count(author_id) desc " <<
+          " limit 0,4"
+      active_students = User.find_by_sql(sql1)
+      if homework_count != 0  &&  !better_students.empty?
+        latest_course_dynamics <<{:type=> 6,:time=>Time.now.to_s,:count=> 4,:better_students=> better_students}
+      end
+      unless active_students.empty?
+        latest_course_dynamics <<{:type=> 7,:time=>Time.now.to_s,:count=> 4,:active_students=>active_students}
+      end
         latest_course_dynamic = latest_course_dynamics.first
         unless latest_course_dynamic.nil?
-          result << {:course_name => course.name,:current_user_is_member => current_user.member_of_course?(course),:current_user_is_teacher => is_course_teacher(current_user,course), :course_id => course.id, :course_img_url => url_to_avatar(course), :course_time => course.time, :course_term => course.term,:message => dynamics_count, :dynamics => latest_course_dynamics, :count => dynamics_count}
+          result << {:course_name => course.name,:current_user_is_member => current_user.member_of_course?(course),:current_user_is_teacher => is_course_teacher(current_user,course), :course_id => course.id, :course_img_url => url_to_avatar(course), :course_time => course.time, :course_term => course.term,:message => "", :dynamics => latest_course_dynamics,
+                     :course_student_num=>course ? course.members.count : 0,:time_from_now=> distance_of_time_in_words(Time.now, latest_course_dynamic[:time].to_time) << "前"}
         end
     end
     #返回数组集合

db/schema.rb

@@ -721,6 +721,16 @@ ActiveRecord::Schema.define(:version => 20150702073308) do
 
   add_index "journal_details", ["journal_id"], :name => "journal_details_journal_id"
 
+  create_table "journal_details_copy", :force => true do |t|
+    t.integer "journal_id",               :default => 0,  :null => false
+    t.string  "property",   :limit => 30, :default => "", :null => false
+    t.string  "prop_key",   :limit => 30, :default => "", :null => false
+    t.text    "old_value"
+    t.text    "value"
+  end
+
+  add_index "journal_details_copy", ["journal_id"], :name => "journal_details_journal_id"
+
   create_table "journal_replies", :id => false, :force => true do |t|
     t.integer "journal_id"
     t.integer "user_id"