关联了项目的作业附件提交不了

app/controllers/attachments_controller.rb

@@ -64,7 +64,7 @@ class AttachmentsController < ApplicationController
     # modify by nwb
     # 下载添加权限设置
      candown = false
-    if (@attachment.container.has_attribute?(:project) || @attachment.container.has_attribute?(:project_id)) && @attachment.container.project
+    if @attachment.container.class.to_s != "HomeworkAttach" &&(@attachment.container.has_attribute?(:project) || @attachment.container.has_attribute?(:project_id)) && @attachment.container.project
       project = @attachment.container.project
       candown= User.current.member_of?(project) || (project.is_public && @attachment.is_public == 1)
     elsif  @attachment.container.is_a?(Project)
@@ -89,7 +89,6 @@ class AttachmentsController < ApplicationController
     elsif  @attachment.container_type == "Bid" && @attachment.container && @attachment.container.courses
       candown = User.current.member_of_course?(@attachment.container.courses.first) || (course.is_public == 1 && @attachment.is_public == 1)
     else
-
       candown = @attachment.is_public == 1
     end
     if candown || User.current.admin? || User.current.id == @attachment.author_id

db/schema.rb

@@ -11,7 +11,7 @@
 #
 # It's strongly recommended to check this file into your version control system.
 
-ActiveRecord::Schema.define(:version => 20141119011439) do
+ActiveRecord::Schema.define(:version => 20141120091234) do
 
   create_table "activities", :force => true do |t|
     t.integer "act_id",   :null => false
@@ -52,6 +52,7 @@ ActiveRecord::Schema.define(:version => 20141119011439) do
     t.string   "disk_directory"
     t.integer  "attachtype",                   :default => 1
     t.integer  "is_public",                    :default => 1
+    t.integer  "copy_from"
   end
 
   add_index "attachments", ["author_id"], :name => "index_attachments_on_author_id"