精品课程推荐

app/helpers/application_helper.rb

@@ -54,6 +54,11 @@ module ApplicationHelper
     course.is_excellent? ? true : false
   end
 
+  # 判断课程对成员是否可见
+  def visible_course?(course)
+    (course.is_delete? or (!course.is_public? && !User.current.member_of_course?(course))) ? false : true
+  end
+
   # 获取项目/课程总分
   # 发布缺陷 4分 回复缺陷 1分 提交一次 4分 讨论帖子 2分 回复帖子 1分 发布新闻 1分
   def static_project_score obj

app/helpers/courses_helper.rb

@@ -11,6 +11,32 @@ module CoursesHelper
   #StudentRoles = [5, 10]
   #AllPeople = StudentRoles+TeacherRoles
   ## return people count
+
+  # 推荐的精品课程
+  def excellent_course_recommend course
+    q = "%#{course.name.strip}%"
+    result = find_excelletn_course(q, course)
+  end
+
+  # 查询符合条件的精品课程
+  def find_excelletn_course keywords, course
+    # 用新课程名去匹配精品课程中按课程名和Tag名
+    if !course.is_public? && !User.current.member_of_course?(course)
+      sql = "SELECT distinct c.* FROM `courses` c, tags t, taggings ts where t.id = ts.tag_id and ts.taggable_id = c.id  and c.is_excellent = 1 and is_delete = 0 and
+          ts.taggable_type = 'Course' and (t.name like '%#{keywords}%'or c.name like '%#{keywords}%')"
+      resultSetTag =  Course.find_by_sql(sql)
+    else
+      sql = "SELECT distinct c.* FROM `courses` c, tags t, taggings ts where t.id = ts.tag_id and ts.taggable_id = c.id  and c.is_excellent = 1 and is_delete = 0 and
+          ts.taggable_type = 'Course' and (t.name like '%#{keywords}%'or c.name like '%#{keywords}%') ORDER BY c.updated_at desc limit 0,5;"
+      resultSetTag = Course.visible.find_by_sql(sql)
+    end
+
+  end
+
+  # 判断精品课程是否可见，非课程成员无法查看私有课程
+  def visible_excellent_course obj
+    # if course.is_pu
+  end
   
   # 返回x项目成员数量，即roles表中定义的所有成员
   def projectCount project    

app/models/course.rb

@@ -72,7 +72,7 @@ class Course < ActiveRecord::Base
   before_save :self_validate
   # 公开课程变成私有课程，所有资源都变成私有
   after_update :update_files_public,:update_course_ealasticsearch_index,:update_activity
-  after_create :create_board_sync, :act_as_course_activity, :act_as_course_message,:create_course_ealasticsearch_index
+  after_create :create_board_sync, :act_as_course_activity, :act_as_course_message,:create_course_ealasticsearch_index, :add_course_ead
   before_destroy :delete_all_members,:delete_course_ealasticsearch_index
 
   safe_attributes 'extra',
@@ -384,6 +384,12 @@ class Course < ActiveRecord::Base
   def act_as_course_message
     self.course_messages << CourseMessage.new(:user_id => self.tea_id, :course_id => self.id, :viewed => false)
   end
+
+  # 发布新课导语
+  def add_course_ead
+
+  end
+
   #项目与课程分离后，很多课程的名称等信息为空，这些数据信息存储在项目表中！！就是数据兼容的问题
   #def name
   #  read_attribute('name') || Project.find_by_identifier(self.extra).try(:name)
@@ -405,6 +411,7 @@ class Course < ActiveRecord::Base
       self.__elasticsearch__.index_document
     end
   end
+
   def update_course_ealasticsearch_index
     if self.is_public == 1 and self.is_delete == 0 #如果是初次更新成为公开或者恢复被删除的情况，会报错，那么这条记录尚未被索引过。没有报错就是更新的其他属性
       begin
@@ -428,13 +435,17 @@ class Course < ActiveRecord::Base
 
     end
   end
+
+  #动态的更新
+  def update_activity
+    update_course_activity(self.class, self.id)
+    update_user_activity(self.class, self.id)
+    update_org_activity(self.class, self.id)
+  end
+
 end
-#动态的更新
-def update_activity
-  update_course_activity(self.class, self.id)
-  update_user_activity(self.class, self.id)
-  update_org_activity(self.class, self.id)
-end
+
+
 
 # Delete the previous articles index in Elasticsearch
 # Course.__elasticsearch__.client.indices.delete index: Course.index_name rescue nil

app/views/courses/_recommendation.html.erb

@@ -1,41 +1,18 @@
-<ul class="courseR">
-  <p class="fontGrey2 f14"><%= l(:label_homework_recommendation) %></p>
-  <li class="mt15"> <%= image_tag(url_to_avatar(course), :width => "40", :height => "40", :class => "fl mr10 rankPortrait", :alt => "logo") %>
-    <div class="fl">
-      <p class="f12 mb5"><a href="javascript:void:(0);" class="hidden fl w170"><%=link_to course.name, course_path(course) %> </a></p>
-      <p class="f12">
-        <span class="fl mr15 fontGrey4"><%= l(:project_module_attachments) %>(<a href="javascript:void:(0);" class="linkBlue2"><%= course.attachments.count %></a>)</span>
-        <span class="fl fontGrey4"><%= l(:label_homework_commont) %>(<a href="javascript:void:(0);" class="linkBlue2"><%= course.homework_commons.count %></a>)</span></p>
-    </div>
-    <div class="cl"></div>
-  </li>
-  <li class="mt15"> <img src="images/courses/pic_courses.jpg" width="40" height="40" alt="logo" class="fl mr10 rankPortrait" />
-    <div class="fl">
-      <p class="f12 mb5"><a href="javascript:void:(0);" class="hidden fl w170">前端技术II(2015秋季学期）</a></p>
-      <p class="f12"><span class="fl mr15 fontGrey4">资源(<a href="javascript:void:(0);" class="linkBlue2">29</a>)</span><span class="fl fontGrey4">作业(<a href="javascript:void:(0);" class="linkBlue2">8</a>)</span></p>
-    </div>
-    <div class="cl"></div>
-  </li>
-  <li class="mt15"> <img src="images/courses/pic_courses.jpg" width="40" height="40" alt="logo" class="fl mr10 rankPortrait" />
-    <div class="fl">
-      <p class="f12 mb5"><a href="javascript:void:(0);" class="hidden fl w170">数据库(2015秋季学期）</a></p>
-      <p class="f12"><span class="fl mr15 fontGrey4">资源(<a href="javascript:void:(0);" class="linkBlue2">29</a>)</span><span class="fl fontGrey4">作业(<a href="javascript:void:(0);" class="linkBlue2">8</a>)</span></p>
-    </div>
-    <div class="cl"></div>
-  </li>
-  <li class="mt15"> <img src="images/courses/pic_courses.jpg" width="40" height="40" alt="logo" class="fl mr10 rankPortrait" />
-    <div class="fl">
-      <p class="f12 mb5"><a href="javascript:void:(0);" class="hidden fl w170">离散数学(2015秋季学期）</a></p>
-      <p class="f12"><span class="fl mr15 fontGrey4">资源(<a href="javascript:void:(0);" class="linkBlue2">29</a>)</span><span class="fl fontGrey4">作业(<a href="javascript:void:(0);" class="linkBlue2">8</a>)</span></p>
-    </div>
-    <div class="cl"></div>
-  </li>
-  <li class="mt15"> <img src="images/courses/pic_courses.jpg" width="40" height="40" alt="logo" class="fl mr10 rankPortrait" />
-    <div class="fl">
-      <p class="f12 mb5"><a href="javascript:void:(0);" class="hidden fl w170">组成原理(2015秋季学期）</a></p>
-      <p class="f12"><span class="fl mr15 fontGrey4">资源(<a href="javascript:void:(0);" class="linkBlue2">29</a>)</span><span class="fl fontGrey4">作业(<a href="javascript:void:(0);" class="linkBlue2">8</a>)</span></p>
-    </div>
-    <div class="cl"></div>
-  </li>
-  <div class="cl"></div>
-</ul>
+<% unless excellent_course_recommend(course).count == 0 %>
+    <ul class="courseR mb10">
+      <p class="fontGrey2 f14"><%= l(:label_homework_recommendation) %></p>
+      <% excellent_course_recommend(course).each do |c_course| %>
+          <li class="mt15"> <%= image_tag(url_to_avatar(c_course), :width => "40", :height => "40", :class => "fl mr10 rankPortrait", :alt => "logo") %>
+            <div class="fl">
+              <p class="f12 mb5"><a href="javascript:void:(0);" class="hidden fl w170"><%=link_to c_course.name, course_path(c_course) %> </a></p>
+              <p class="f12">
+                <span class="fl mr15 fontGrey4"><%= l(:project_module_attachments) %>(<%= link_to c_course.attachments.count, course_files_path(c_course), :class => "linkBlue2" %>)</span>
+                <span class="fl fontGrey4"><%= l(:label_homework_commont) %>(<%= link_to c_course.homework_commons.count, homework_common_index_path(c_course), :class => "linkBlue2" %>)</span></p>
+            </div>
+            <div class="cl"></div>
+          </li>
+      <% end %>
+      <div class="cl"></div>
+    </ul>
+<% end %>
+

db/migrate/20160118014219_define_excellent_course.rb

@@ -0,0 +1,17 @@
+class DefineExcellentCourse < ActiveRecord::Migration
+  def up
+    arr = [302,192,370,394,183,361,117,218,379,178,418,203,342,403,225]
+    for i in 0..arr.length-1
+      begin
+      puts arr[i]
+      course = Course.find(arr[i])
+      course.update_attribute(:is_excellent, true)
+      rescue
+        logger.error("Course is not found!")
+      end
+    end
+  end
+
+  def down
+  end
+end