修改bug<测试版--项目版--作品下载：成功上传某些资源，正确选择内容类型，却并未正确显示相关内容类型的资源>

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

app/controllers/files_controller.rb

@@ -265,6 +265,7 @@ class FilesController < ApplicationController
                   'size' => "#{Attachment.table_name}.filesize",
                   'downloads' => "#{Attachment.table_name}.downloads"
     sort=''
+
     if params[:sort]
       params[:sort].split(",").each do |sort_type|
         order_by = sort_type.split(":")

app/views/files/_course_file.html.erb

@@ -2,6 +2,7 @@
 <% attachmenttypes = @course.attachmenttypes %>
 <% sufixtypes = @course.contenttypes %>
 
+
 <span class="borad-title"><%=  t(:label_user_course) %>资源共享区</span>
 
 <div class="content-title-top">
@@ -49,7 +50,8 @@
     <% if attachmenttypes.any? %>
         &nbsp; &nbsp; &nbsp;
         <label for="attachment_browse_label"><%= l(:attachment_browse) %></label>
-        <%= select_tag "attachment_browse", content_tag(:option, l(:attachment_all), :value => '0') +options_from_collection_for_select(attachmenttypes, "id", "typeName"),
+        <%= select_tag "attachment_browse", content_tag(:option, l(:attachment_all), :value => '0'  ) +options_from_collection_for_select(attachmenttypes, "id", "typeName", params[:type]),
+
                        :onchange => "course_attachmenttypes_searchex(this.value)" %>
     <% end %>
     <% if sufixtypes.any? %>