diff --git a/app/controllers/issues_controller.rb b/app/controllers/issues_controller.rb
index b97699058..bdbdc7d9c 100644
--- a/app/controllers/issues_controller.rb
+++ b/app/controllers/issues_controller.rb
@@ -183,6 +183,7 @@ class IssuesController < ApplicationController
     end
   end
 
+  # 用户发布新issue
   def create
     call_hook(:controller_issues_new_before_save, { :params => params, :issue => @issue })
     @issue.save_attachments(params[:attachments] || (params[:issue] && params[:issue][:uploads]))
@@ -225,6 +226,7 @@ class IssuesController < ApplicationController
   end
 
   def edit
+    # 修改实例变量的值
     return unless update_issue_from_params
 
     respond_to do |format|
@@ -233,6 +235,7 @@ class IssuesController < ApplicationController
     end
   end
 
+  # 用户编辑更改issue
   def update
     if params[:issue_detail]
       issue = Issue.find(params[:id])
@@ -240,6 +243,7 @@ class IssuesController < ApplicationController
       @saved = update_user_issue_detail(issue, params)
       return
     else
+      # 修改实例变量的值
       return unless update_issue_from_params
       @issue.save_attachments(params[:attachments] || (params[:issue] && params[:issue][:uploads]))
       saved = false
@@ -575,6 +579,7 @@ class IssuesController < ApplicationController
     @time_entry = TimeEntry.new(:issue => @issue, :project => @issue.project)
     @time_entry.attributes = params[:time_entry]
 
+    # 更新issue状态时，journal表产生记录，返回@current_journal
     @issue.init_journal(User.current)
 
     issue_attributes = params[:issue]
diff --git a/app/models/issue.rb b/app/models/issue.rb
index 4cfea1f43..222a4f4e2 100644
--- a/app/models/issue.rb
+++ b/app/models/issue.rb
@@ -757,6 +757,7 @@ class Issue < ActiveRecord::Base
     end
   end
 
+# 更新issue时，判断更新之前当前是否有自动更新的评论
   def init_journal(user, notes = "")
     @current_journal ||= Journal.new(:journalized => self, :user => user, :notes => notes)
     if new_record?
@@ -1454,8 +1455,18 @@ class Issue < ActiveRecord::Base
   end
 
   # Callback on file attachment
+  # 在执行issue模块前 执行：当附件被添加时，产生评论
+  # 第一次创建issue时，@current_journal为nil，评论不产生
+  # 当附件名称重名时，也不产生评论
+  # 当更新isuue时，第一次上传的附件的已经存在，则不更新次附件评论
   def attachment_added(obj)
-    if @current_journal && @current_journal.user_id == obj.author_id && JournalDetail.find_all_by_value(obj.filename).count == 0
+
+      # 找出该issue评论表中，附件重名的个数
+      jor = Journal.where(:journalized_id => self.id)
+      jor_ids = jor.empty? ? "(-1)" : "(" + jor.map{|detail| detail.id}.join(",") + ")"
+      jor_details_count = JournalDetail.where("journal_id in #{jor_ids} and value = '#{obj.filename}'").count
+
+    if @current_journal && @current_journal.user_id == obj.author_id && jor_details_count == 0 && self.attachments.find_all_by_filename(obj.filename).count == 0
       @current_journal.details << JournalDetail.new(:property => 'attachment', :prop_key => obj.id, :value => obj.filename)
 
     end
diff --git a/db/schema.rb b/db/schema.rb
index 043bf70d7..f0f276544 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -11,7 +11,7 @@
 #
 # It's strongly recommended to check this file into your version control system.
 
-ActiveRecord::Schema.define(:version => 20160830090214) do
+ActiveRecord::Schema.define(:version => 20160907080621) do
 
   create_table "activities", :force => true do |t|
     t.integer  "act_id",                                  :null => false
@@ -157,13 +157,13 @@ ActiveRecord::Schema.define(:version => 20160830090214) do
   create_table "attachments", :force => true do |t|
     t.integer  "container_id"
     t.string   "container_type", :limit => 30
-    t.string   "filename",                     :default => "", :null => false
-    t.string   "disk_filename",                :default => "", :null => false
-    t.integer  "filesize",                     :default => 0,  :null => false
+    t.string   "filename",                     :default => "",    :null => false
+    t.string   "disk_filename",                :default => "",    :null => false
+    t.integer  "filesize",                     :default => 0,     :null => false
     t.string   "content_type",                 :default => ""
-    t.string   "digest",         :limit => 40, :default => "", :null => false
-    t.integer  "downloads",                    :default => 0,  :null => false
-    t.integer  "author_id",                    :default => 0,  :null => false
+    t.string   "digest",         :limit => 40, :default => "",    :null => false
+    t.integer  "downloads",                    :default => 0,     :null => false
+    t.integer  "author_id",                    :default => 0,     :null => false
     t.datetime "created_on"
     t.string   "description"
     t.string   "disk_directory"
@@ -173,6 +173,7 @@ ActiveRecord::Schema.define(:version => 20160830090214) do
     t.integer  "quotes"
     t.integer  "is_publish",                   :default => 1
     t.date     "publish_time"
+    t.boolean  "init_file",                    :default => false
   end
 
   add_index "attachments", ["author_id"], :name => "index_attachments_on_author_id"