1.给各角色添加浏览课程资源文件权限

2.修改课程动态显示逻辑

app/controllers/courses_controller.rb

@@ -62,6 +62,8 @@ class CoursesController < ApplicationController
         course_status = CourseStatus.find_by_course_id(@course.id)
         course_status.destroy if course_status
       elsif params[:course][:is_public] == '1'
+        course_status = CourseStatus.find_by_course_id(@course.id)
+        course_status.destroy if course_status
         course_status = CourseStatus.create(:course_id => @course.id,  :grade => 0)
       end
 
@@ -350,6 +352,7 @@ class CoursesController < ApplicationController
         #gcmend
 
         @courses=handle_course @courses_all, @course_activity_count
+
         @s_type = 3
         @courses = @courses[@course_pages.offset, @course_pages.per_page]
       else
@@ -500,7 +503,7 @@ class CoursesController < ApplicationController
     end
 
     has = {
-        "show_files" => true,
+        "show_course_files" => true,
         "show_messages" => true,
         "show_bids" => true,
         "show_contests" => true,
@@ -516,11 +519,6 @@ class CoursesController < ApplicationController
     @activity.scope_select {|t| !has["show_#{t}"].nil?}
     events = @activity.events(@date_from, @date_to)
 
-   # @activity = Activity.where("update_on between " +@date_from.to_s + " and " +@date_to.to_s  ).order('id desc')
-    #@activity_count =  @activity.count
-    #@activity_pages = Paginator.new @activity_count, pre_count, params['page']
-   # @activity = activity.offset(@activity_pages.offset).limit(@activity_pages.per_page).all
-
     @offset, @limit = api_offset_and_limit({:limit => 10})
     @events_count = events.count
     @events_pages = Paginator.new @events_count, @limit, params['page']

app/models/attachment.rb

@@ -31,11 +31,19 @@ class Attachment < ActiveRecord::Base
   validates_length_of :disk_filename, :maximum => 255
   validates_length_of :description, :maximum => 255
   validate :validate_max_file_size
-  acts_as_taggable
 
+
+  acts_as_taggable
   acts_as_event :title => :filename,
                 :url => Proc.new {|o| {:controller => 'attachments', :action => 'download', :id => o.id, :filename => o.filename}}
 
+
+  acts_as_activity_provider :type => 'course_files',
+                            :permission => :view_files,
+                            :author_key => :author_id,
+                            :find_options => {:select => "#{Attachment.table_name}.*",
+                                              :joins => "LEFT JOIN #{Course.table_name} ( #{Attachment.table_name}.container_type='Course' AND #{Attachment.table_name}.container_id = #{Course.table_name}.id )"}
+
   acts_as_activity_provider :type => 'files',
                             :permission => :view_files,
                             :author_key => :author_id,

app/models/course.rb

@@ -73,6 +73,10 @@ class Course < ActiveRecord::Base
     user.allowed_to?(:view_course, self)
   end
 
+  def parent_id_changed?
+    false
+  end
+
   # 课程的短描述信息
   def short_description(length = 255)
     description.gsub(/^(.{#{length}}[^\n\r]*).*$/m, '\1...').strip if description

app/models/course_journals_for_message.rb

@@ -83,6 +83,7 @@ class CourseJournalsForMessage < ActiveRecord::Base
     message 
   end
 
+
   def act_as_activity
     if self.jour_type == 'Principal' 
       unless self.user_id == self.jour.id &&  self.user_id != self.reply_id && self.reply_id != 0        

app/views/courses/show.html.erb

@@ -16,8 +16,7 @@
                         <table width="580px" border="0">
                           <tr>
                             <td colspan="2" valign="top">
-                              <%= test=e.course%>
-                              <strong> <%= h(e.course) if @course.nil? || (e.course != nil && @course.id != e.course.id) %></strong>
+                              <strong> <%= h(e.event_title) if @course.nil? || (e.course != nil && @course.id != e.course.id) %></strong>
 										<span class="font_lighter">
                                           <% if @canShowRealName %>
                                                <%= link_to_user(e.event_author) if e.respond_to?(:event_author) %>(<%= link_to_user(e.event_author,@canShowRealName) if e.respond_to?(:event_author) %>)
@@ -27,7 +26,7 @@
 
                                           <%= l(:label_new_activity) %> </span>
 
-                              <%= link_to "#{eventToLanguageCourse(e.event_type, @course)}: "<< format_activity_title(e.event_title), (e.event_type.eql?("attachment")&&e.container.kind_of?(course)) ? course_files_path(e.container) : e.event_url %>
+                              <%= link_to "#{eventToLanguageCourse(e.event_type, @course)}: "<< format_activity_title(e.event_title), (e.event_type.eql?("attachment")&&e.container.kind_of?(Course)) ? course_files_path(e.container) : e.event_url %>
                             </td>
                           </tr>
                           <tr>

app/views/files/_new.html.erb

@@ -13,6 +13,8 @@
             <%= select_tag "version_id", content_tag('option', '') +
                     options_from_collection_for_select(versions, "id", "name"), {style: 'width:100px'} %>
           </td>
+      <% else %>
+          <td><p></p></td> <td></td>
       <% end %>
 
       <% if attachmenttypes.any? %>

db/migrate/20140606028512_add_course_roles.rb

@@ -44,6 +44,7 @@ class AddCourseRoles < ActiveRecord::Migration
         role.permissions.append(:view_course )
         role.permissions.append(:search_course )
       end
+      role.permissions.append(:view_course_files )
       role.save
     end
   end

lib/redmine.rb

@@ -110,7 +110,7 @@ Redmine::AccessControl.map do |map|
 
   map.course_module :files do |map|
     map.permission :manage_files, {:files => [:new, :create]}, :require => :loggedin
-    map.permission :view_files, {:files => :index, :versions => :download}, :read => true
+    map.permission :view_course_files, {:files => :index, :versions => :download}, :read => true
   end
   #end
 
@@ -408,6 +408,7 @@ Redmine::Activity.map do |activity|
   activity.register :news
   activity.register :documents, :class_name => %w(Document Attachment)
   activity.register :files, :class_name => 'Attachment'
+  activity.register :course_files, :class_name => 'Attachment'
   activity.register :wiki_edits, :class_name => 'WikiContent::Version', :default => false
   activity.register :messages, :default => false
   activity.register :time_entries, :default => false