编写《作业查询存储过程》

Signed-off-by: alan <547533434@qq.com>

app/controllers/courses_controller.rb

@@ -285,7 +285,7 @@ class CoursesController < ApplicationController
     member.course_group_id = group.id
     member.save
     @group = group
-
+    @members = student_homework_score
     @course_groups = @course.course_groups
     @membercount = @members.count
     search_group_members group
@@ -298,7 +298,7 @@ class CoursesController < ApplicationController
     member.save
     @group = group
     @course_groups = @course.course_groups
-
+    @members = student_homework_score
     @membercount = @members.count
     search_group_members group
   end
@@ -309,12 +309,12 @@ class CoursesController < ApplicationController
     @is_remote = true
     if params[:group_id] && params[:group_id] != "0"
       @group = CourseGroup.find(params[:group_id])
-      @results = student_homework_score.find_all {|mem| mem.course_group_id == group.id}
+      @results = student_homework_score.find_all {|mem| mem.course_group_id == @group.id}
     else
       @results = student_homework_score
     end
     @@result = @results
-
+    
     @members = searchStudent(@course)
     @membercount = @members.count
     @results = paginateHelper @results

app/controllers/members_controller.rb

@@ -129,7 +129,7 @@ class MembersController < ApplicationController
               member =  Member.new(:role_ids => params[:membership][:role_ids], :user_id => user_id)
               role = Role.find_by_id(params[:membership][:role_ids])
               # 这里的判断只能通过角色名，可以弄成常量
-              if role.name == "学生"
+              if role.name == "学生" || role.name == "Student"
                 StudentsForCourse.create(:student_id => user_id, :course_id =>@course.id)
               end
               members << member
@@ -210,7 +210,7 @@ class MembersController < ApplicationController
         if (params[:membership][:role_ids])
           role = Role.find(params[:membership][:role_ids][0])
           # 这里的判断只能通过角色名，可以弄成常量
-          if role.name == "学生"
+          if role.name == "学生"  || role.name == "Student"
             StudentsForCourse.create(:student_id => @member.user_id, :course_id =>@course.id)
           else
             joined = StudentsForCourse.where('student_id = ? and course_id = ?', @member.user_id,@course.id)

db/migrate/20141226074532_select_member_score.rb

@@ -1,97 +1,100 @@
-
+#encoding=UTF-8
-DELIMITER $$
+class SelectMemberScore < ActiveRecord::Migration
-
+  def up
-CREATE
+    sql = ("
-    /*[DEFINER = { user | CURRENT_USER }]*/
+
-    PROCEDURE `member_score`(IN courseid INT)
+CREATE
-    /*LANGUAGE SQL
+
-    | [NOT] DETERMINISTIC
+    PROCEDURE `member_score`(IN courseid INT)
-    | { CONTAINS SQL | NO SQL | READS SQL DATA | MODIFIES SQL DATA }
+
-    | SQL SECURITY { DEFINER | INVOKER }
+    BEGIN
-    | COMMENT 'string'*/
+
-    BEGIN
+	CREATE TEMPORARY TABLE IF NOT EXISTS course_teachers (
-    
+           id INT
-	CREATE TEMPORARY TABLE IF NOT EXISTS course_teachers (  
+
-           id INT 
+         );
-          
+         TRUNCATE TABLE course_teachers;
-         );  
+
-         TRUNCATE TABLE course_teachers; 
+	 CREATE TEMPORARY TABLE IF NOT EXISTS mems (
-         
+           id INT ,
-	 CREATE TEMPORARY TABLE IF NOT EXISTS mems (  
+           user_id INT,
-           id INT ,  
+           course_id INT,
-           user_id INT,  
+					 created_on DATETIME,
-           course_id INT,  
+           course_group_id INT,
-					 created_on DATETIME,
+					 score FLOAT DEFAULT 0
-           course_group_id INT,
+         );
-					 score FLOAT DEFAULT 0
+         TRUNCATE TABLE mems;
-         );  
+
-         TRUNCATE TABLE mems; 
+	 CREATE TEMPORARY TABLE IF NOT EXISTS mem_home (
-
+           id INT,
-	 CREATE TEMPORARY TABLE IF NOT EXISTS mem_home (  
+           user_id INT,
-           id INT,  
+           course_id INT,
-           user_id INT,  
+					 created_on DATETIME,
-           course_id INT,  
+           course_group_id INT,
-					 created_on DATETIME,
+					 home_id INT,
-           course_group_id INT,
+					 score FLOAT DEFAULT 0
-					 home_id INT, 
+         );
-					 score FLOAT DEFAULT 0
+         TRUNCATE TABLE mem_home;
-         );  
+
-         TRUNCATE TABLE mem_home;  
+   CREATE TEMPORARY TABLE IF NOT EXISTS t_scores (
-
+
-   CREATE TEMPORARY TABLE IF NOT EXISTS t_scores (  
+           home_id INT,
-           
+           score FLOAT
-           home_id INT,  
+         );
-           score FLOAT
+         TRUNCATE TABLE t_scores;
-         );  
+
-         TRUNCATE TABLE t_scores; 
+   CREATE TEMPORARY TABLE IF NOT EXISTS s_scores (
-
+
-   CREATE TEMPORARY TABLE IF NOT EXISTS s_scores (  
+           home_id INT,
-           
+           score FLOAT
-           home_id INT,  
+         );
-           score FLOAT
+         TRUNCATE TABLE s_scores;
-         );  
+
-         TRUNCATE TABLE s_scores; 
+ CREATE TEMPORARY TABLE IF NOT EXISTS scores (
-
+
- CREATE TEMPORARY TABLE IF NOT EXISTS scores (  
+           user_id INT,
-           
+           score FLOAT
-           user_id INT,  
+         );
-           score FLOAT
+         TRUNCATE TABLE scores;
-         );  
+
-         TRUNCATE TABLE scores; 
+         INSERT INTO course_teachers (SELECT members.user_id FROM members WHERE members.user_id NOT IN (SELECT student_id FROM students_for_courses WHERE course_id = courseid));
-         
+
-         INSERT INTO course_teachers (SELECT members.user_id FROM members WHERE members.user_id NOT IN (SELECT student_id FROM students_for_courses WHERE course_id = courseid));
+
-
+
-				#查出所有的学生
+ INSERT INTO mems (id, user_id, course_id, created_on, course_group_id)
-	   
+						(SELECT members.id, members.user_id, members.course_id, members.created_on, members.course_group_id
- INSERT INTO mems (id, user_id, course_id, created_on, course_group_id)  
+							FROM members WHERE course_id = courseid AND members.user_id NOT IN (SELECT id FROM course_teachers));
-						(SELECT members.id, members.user_id, members.course_id, members.created_on, members.course_group_id
+
-							FROM members WHERE course_id = courseid AND members.user_id NOT IN (SELECT id FROM course_teachers));
+         INSERT INTO mem_home (id, user_id, course_id, created_on, course_group_id,home_id)
-       
+						(SELECT members.id, members.user_id, members.course_id, members.created_on, members.course_group_id, homework_attaches.id
-				# 查出所有的学生列表及其作业
+							FROM members, homework_attaches WHERE course_id = courseid
-         INSERT INTO mem_home (id, user_id, course_id, created_on, course_group_id,home_id)  
+						AND members.user_id = homework_attaches.user_id AND members.user_id NOT IN (SELECT id FROM course_teachers)
-						(SELECT members.id, members.user_id, members.course_id, members.created_on, members.course_group_id, homework_attaches.id
+					 AND homework_attaches.bid_id IN (SELECT bid_id FROM homework_for_courses WHERE course_id = courseid ));
-							FROM members, homework_attaches WHERE course_id = courseid 
+
-						AND members.user_id = homework_attaches.user_id AND members.user_id NOT IN (SELECT id FROM course_teachers)
+			INSERT INTO t_scores (home_id, score)	(SELECT rateable_id,AVG(seems_rateable_rates.stars)
-					 AND homework_attaches.bid_id IN (SELECT bid_id FROM homework_for_courses WHERE course_id = courseid ));
+		FROM seems_rateable_rates WHERE rateable_type = 'HomeworkAttach' AND rateable_id IN (SELECT mem_home.home_id FROM mem_home)
-			
+		AND rater_id  IN (SELECT id FROM course_teachers)
-			INSERT INTO t_scores (home_id, score)	(SELECT rateable_id,AVG(seems_rateable_rates.stars) 
+			 GROUP BY rateable_id);
-		FROM seems_rateable_rates WHERE rateable_type = 'HomeworkAttach' AND rateable_id IN (SELECT mem_home.home_id FROM mem_home)
+
-		AND rater_id  IN (SELECT id FROM course_teachers)
+			INSERT INTO s_scores (home_id, score)	(SELECT rateable_id,AVG(seems_rateable_rates.stars)
-			 GROUP BY rateable_id);
+		FROM seems_rateable_rates WHERE rateable_type = 'HomeworkAttach' AND rateable_id IN (SELECT mem_home.home_id FROM mem_home)
-			 
+			AND rater_id NOT IN (SELECT id FROM course_teachers)
-			INSERT INTO s_scores (home_id, score)	(SELECT rateable_id,AVG(seems_rateable_rates.stars) 
+			 GROUP BY rateable_id) ;
-		FROM seems_rateable_rates WHERE rateable_type = 'HomeworkAttach' AND rateable_id IN (SELECT mem_home.home_id FROM mem_home)
+
-			AND rater_id NOT IN (SELECT id FROM course_teachers)
+		UPDATE mem_home, t_scores SET mem_home.score = t_scores.score WHERE mem_home.home_id = t_scores.home_id ;
-			 GROUP BY rateable_id) ;  
+
-	
+		UPDATE mem_home, s_scores SET mem_home.score = s_scores.score WHERE mem_home.home_id = s_scores.home_id AND mem_home.score = 0;
-		UPDATE mem_home, t_scores SET mem_home.score = t_scores.score WHERE mem_home.home_id = t_scores.home_id ;
+
-		 
+		INSERT INTO scores (user_id, score) (SELECT user_id, SUM(score) FROM mem_home GROUP BY user_id);
-		UPDATE mem_home, s_scores SET mem_home.score = s_scores.score WHERE mem_home.home_id = s_scores.home_id AND mem_home.score = 0;
+		UPDATE mems, scores SET mems.score = scores.score WHERE mems.user_id = scores.user_id;
-   
+
-		INSERT INTO scores (user_id, score) (SELECT user_id, SUM(score) FROM mem_home GROUP BY user_id);
+		SELECT * FROM mems ORDER BY score DESC;
-		UPDATE mems, scores SET mems.score = scores.score WHERE mems.user_id = scores.user_id;
+    END;
-	
+
-		SELECT * FROM mems ORDER BY score DESC;
+    ")
-    END$$
+      execute(sql)
-
+  end
-DELIMITER ;
+
+  def down
+  end
+end

db/schema.rb

@@ -11,7 +11,7 @@
 #
 # It's strongly recommended to check this file into your version control system.
 
-ActiveRecord::Schema.define(:version => 20141210070327) do
+ActiveRecord::Schema.define(:version => 20141226074532) do
 
   create_table "activities", :force => true do |t|
     t.integer "act_id",   :null => false