修复项目资源排序无效的BUG

app/controllers/files_controller.rb

@@ -45,11 +45,45 @@ class FilesController < ApplicationController
                   'filename' => "#{Attachment.table_name}.filename",
                   'size' => "#{Attachment.table_name}.filesize",
                   'downloads' => "#{Attachment.table_name}.downloads"
+    sort = ""
 
     if params[:project_id]
       @isproject = true
-      @containers = [ Project.includes(:attachments).reorder("#{Attachment.table_name}.created_on DESC").find(@project.id)]
+
-      @containers += @project.versions.includes(:attachments).reorder("#{Attachment.table_name}.created_on DESC").all.sort
+      if params[:sort]
+        params[:sort].split(",").each do |sort_type|
+          order_by = sort_type.split(":")
+
+          case order_by[0]
+            when "filename"
+              attribute = "filename"
+            when "size"
+              attribute = "filesize"
+            when "attach_type"
+              attribute = "attachtype"
+            when "content_type"
+              attribute = "created_on"
+            when "field_file_dense"
+              attribute = "is_public"
+            when "downloads"
+              attribute = "downloads"
+            when "created_on"
+              attribute = "created_on"
+          end
+
+          if order_by.count == 1
+            sort += "#{Attachment.table_name}.#{attribute} desc "
+          elsif order_by.count == 2
+            sort += "#{Attachment.table_name}.#{attribute} #{order_by[1]} "
+          end
+          if sort_type != params[:sort].split(",").last
+            sort += ","
+          end
+        end
+      end
+
+      @containers = [ Project.includes(:attachments).reorder(sort).find(@project.id)]
+      @containers += @project.versions.includes(:attachments).reorder(sort).all.sort
 
       show_attachments @containers
 
@@ -57,7 +91,6 @@ class FilesController < ApplicationController
     elsif params[:course_id]
       @isproject = false
 
-      sort = ""
       if params[:sort]
         params[:sort].split(",").each do |sort_type|
           order_by = sort_type.split(":")