1.添加课程垃圾数据清理迁移文件

2.课程首页逻辑更改

app/controllers/welcome_controller.rb

@@ -30,6 +30,11 @@ class WelcomeController < ApplicationController
   end
   
   def course
+    if params[:school_id]
+      @school_id = params[:school_id]
+    else
+      @school_id = User.current.user_extensions.school.id
+    end
     @logoLink ||= logolink()
   end
   

app/helpers/watchers_helper.rb

@@ -67,6 +67,30 @@ module WatchersHelper
   
     link_to text, url, :remote => true, :method => method, :class => css
   end
+
+  # add by nwb
+  # 关注课程
+  def new_course_watcher_link(objects, user, options=[])
+    return '' unless user && user.logged?
+    objects = Array.wrap(objects)
+
+    watched = objects.any? {|object| object.watched_by?(user)}
+    @watch_flag = (objects.first.instance_of?(User) or objects.first.instance_of?(Project) or (objects.first.instance_of?(Contest)))
+    css =  @watch_flag ? ([watcher_css(objects), watched ? 'icon ' : 'icon '].join(' ') << options[0].to_s) :
+        ([watcher_css(objects), watched ? 'icon icon-fav ' : 'icon icon-fav-off '].join(' ') << options[0].to_s)
+
+    text = @watch_flag ?
+        (watched ? l(:button_unfollow) : l(:button_follow)) : (watched ? l(:button_unwatch) : l(:button_watch))
+
+    url = watch_path(
+        :object_type => objects.first.class.to_s.underscore,
+        :object_id => (objects.size == 1 ? objects.first.id : objects.map(&:id).sort)
+    )
+    method = watched ? 'delete' : 'post'
+
+    link_to text, url, :remote => true, :method => method, :class => css
+  end
+
   # added by fq, modify nyan
   # Somebody may use option params
   def join_in_course(course, user, options=[])

app/helpers/welcome_helper.rb

@@ -233,8 +233,9 @@ module WelcomeHelper
   def find_all_new_hot_course limit = 9 ,school_id = 0
     #sort_project_by_hot_rails 1, 'course_ac_para DESC', limit
     time_now = Time.new.strftime("%Y");
-    Course.visible.joins(:course_status).where("#{Course.table_name}.created_at like '%#{time_now}%' and #{Course.table_name}.school_id <>
+    courses = Course.visible.joins(:course_status).where("#{Course.table_name}.created_at like '%#{time_now}%' and #{Course.table_name}.school_id <>
        ?", school_id).order("course_ac_para DESC").limit(limit).all
+    courses
   end
 
   def find_all_hot_bid

app/views/welcome/course.html.erb

@@ -39,24 +39,24 @@
 
     </div>
     <div class="course welcome_left" id="welcome_left" >
-			<span class="font_welcome_school"> <% if params[:school_id].nil? and User.current.user_extensions.school.nil? %>
+			<span class="font_welcome_school"> <% if @school_id.nil? and User.current.user_extensions.school.nil? %>
               <% else%>
-					<% if params[:school_id] == "0" %>
+					<% if @school_id == "0" %>
                   <% else %>
-						<% if params[:school_id].nil? %>
+						<% if @school_id.nil? %>
 							<%= link_to School.find(User.current.user_extensions.school.id).name, options={:action => 'course',:school_id => User.current.user_extensions.school.id}, html_options={:class => 'font_welcome_school',:method => 'get'}%>
                           <br />
 						<% else %>
-							<%= link_to School.find(params[:school_id]).name ,options={:action => 'course',:school_id => params[:school_id]}, html_options={:class => 'font_welcome_school',:method => 'get'}%>
+							<%= link_to School.find(@school_id).name ,options={:action => 'course',:school_id => @school_id}, html_options={:class => 'font_welcome_school',:method => 'get'}%>
                           <br />
 						<% end %>
 					<% end %>
 				<% end %> </span>
       <span class="font_welcome_trustie"><%= l(:label_welcome_trustie) %><%= l(:label_welcome_trustie_course) %> </span>
-      <% if params[:school_id].nil? and User.current.user_extensions.school.nil? %>
+      <% if @school_id.nil? and User.current.user_extensions.school.nil? %>
           <span class="font_welcome_tdescription">, <%= l(:label_welcome_trustie_course_description) %></span>
       <% else %>
-          <% if params[:school_id] == "0" %>
+          <% if @school_id == "0" %>
               <span class="font_welcome_tdescription">, <%= l(:label_welcome_trustie_course_description) %></span>
           <% end %>
       <% end %>
@@ -73,7 +73,7 @@
 
 <div id="J_Slide" class="d-p-index-box d-p-index-hotproject">
   <h3><strong>新开课程</strong></h3>
-  <% school_course = find_miracle_course(10, 7,params[:school_id]) %>
+  <% school_course = find_miracle_course(10, 7,@school_id) %>
   <% if(school_course.count == 0) %>
       <span><%= link_to "更多>>", {:controller => 'courses', :action => 'index', :school_id => nil} %></span>
       <div class="d-p-projectlist-box">
@@ -86,7 +86,7 @@
             该学校未开设任何课程，您可以查看其他学校课程
           </p>
           <h1></h1>
-          <% find_all_new_hot_course(9,params[:school_id]).map do |project| %>
+          <% find_all_new_hot_course(9,@school_id).map do |project| %>
               <li class='<%= cycle("odd", "even") %>'  title=<%=project.description.to_s%>>
                 <div class='avatar'>
                   <%= image_tag(get_course_avatar(project), :class => "avatar-4") %>
@@ -94,7 +94,7 @@
                 <!-- 上左下右 -->
                 <div class='desc_item' >
                     <span class=''>
-                        <% course = Course.find_by_extra(project.identifier)%>
+                        <% course = Course.find_by_extra(project.extra)%>
                       <% if(course.school == nil) %>
                         &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
                         <% else %>
@@ -116,13 +116,6 @@
                 <!-- 				<div class='desc_item' style="">
                 <span class='font_lighter' title=<%#=project.description.to_s%>><%#=project.description.truncate(25, omission: '...')%></span>
             </div> -->
-                <div>
-                  <% if !course_endTime_timeout?(project)%>
-                      <div >
-                        <%= new_watcher_link(project, User.current)%>
-                      </div>
-                  <% end %>
-                </div>
               </li>
           <% end %>
         </ul>
@@ -134,7 +127,7 @@
           </span>
       <% else %>
           <span>
-            <%= link_to "更多>>", {:controller => 'courses', :action => 'index', :school_id => params[:school_id]} %>
+            <%= link_to "更多>>", {:controller => 'courses', :action => 'index', :school_id => @school_id} %>
           </span>
       <% end %>
       <div class="d-p-projectlist-box">
@@ -181,7 +174,7 @@
                 该学校开设课程较少，您可以查看其他学校课程
               </p>
             </li>
-            <% find_all_new_hot_course(9 - school_course.count,params[:school_id]).map do |project| %>
+            <% find_all_new_hot_course(9 - school_course.count,@school_id).map do |project| %>
               <li class='<%= cycle("odd", "even") %>'  title=<%=project.description.to_s%>>
                 <div class='avatar'>
                   <%= image_tag(get_course_avatar(project), :class => "avatar-4") %>

db/migrate/20140703085204_clear_course_data.rb

@@ -0,0 +1,11 @@
+class ClearCourseData < ActiveRecord::Migration
+  def up
+    # 清理课程表垃圾数据
+    # 之前删除项目未删除课程的数据
+    sql = 'delete from courses where name is null and extra not in (select identifier from projects)'
+    execute(sql)
+  end
+
+  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 => 20140701075839) do
+ActiveRecord::Schema.define(:version => 20140703085204) do
 
   create_table "activities", :force => true do |t|
     t.integer "act_id",   :null => false