FIX bug

app/controllers/files_controller.rb

@@ -16,12 +16,17 @@ class FilesController < ApplicationController
     sort = params[:sort] || 0 # 0: 降序；1: 升序
     sort_type = params[:sort_type] || 'created_on' # created_on：时间排序， downloads：下载次数排序; quotes: 引用次数排序
     course_second_category_id = params[:course_second_category_id] || 0 # 0: 为主目录， 其他为次目录id
-    @user = current_user || nil
+    @user = current_user
     @attachments = @course.attachments.by_course_second_category_id(course_second_category_id)
                        .includes(attachment_group_settings: :course_group, author: [:user_extension, :course_members])
                        .ordered(sort: sort.to_i, sort_type: sort_type.strip)
+
     get_category(@course, course_second_category_id)
+    @total_count = @attachments.size
+    @public_count = @attachments.publiced.size
+    @private_count = @total_count - @public_count
 
+    @attachments = @attachments.by_keywords(params[:search])
     @attachments =
       case @user.course_identity(@course)
       when 5
@@ -32,12 +37,6 @@ class FilesController < ApplicationController
         @attachments
       end
 
-    @total_count = @attachments.size
-    @public_count = @attachments.publiced.size
-    @private_count = @total_count - @public_count
-
-    @attachments = @attachments.by_keywords(params[:search])
-
     @attachments = @attachments.page(@page).per(@page_size)
   end