diff --git a/app/views/users/_user_homework_form.html.erb b/app/views/users/_user_homework_form.html.erb
index b22053f6d..6e07e7122 100644
--- a/app/views/users/_user_homework_form.html.erb
+++ b/app/views/users/_user_homework_form.html.erb
@@ -10,7 +10,7 @@
 
 <div class="HomeWorkCon">
   <div>
-    <input  type="text" name="homework_common[name]" id="homework_name" class="InputBox  w701" maxlength="255" onfocus="$('#homework_editor').show()" onkeyup="regex_homework_name();" placeholder="请输入作业标题" value="<%= homework.name%>" >
+    <input  type="text" name="homework_common[name]" id="homework_name" class="InputBox  w701" maxlength="255" onfocus="$('#homework_editor').show()" onkeyup="regex_homework_name();" placeholder="发布作业，请先输入作业标题" value="<%= homework.name%>" >
     <p id="homework_name_span" class="c_red mt5"></p>
   </div>
   <div class="cl"></div>
diff --git a/db/schema.rb b/db/schema.rb
index b98ab20b4..4dd7f1b68 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -476,6 +476,13 @@ ActiveRecord::Schema.define(:version => 20150911064528) do
 
   add_index "delayed_jobs", ["priority", "run_at"], :name => "delayed_jobs_priority"
 
+  create_table "discuss_demos", :force => true do |t|
+    t.string   "title"
+    t.text     "body"
+    t.datetime "created_at", :null => false
+    t.datetime "updated_at", :null => false
+  end
+
   create_table "documents", :force => true do |t|
     t.integer  "project_id",                :default => 0,  :null => false
     t.integer  "category_id",               :default => 0,  :null => false
@@ -490,23 +497,26 @@ ActiveRecord::Schema.define(:version => 20150911064528) do
   add_index "documents", ["created_on"], :name => "index_documents_on_created_on"
   add_index "documents", ["project_id"], :name => "documents_project_id"
 
-  create_table "dts", :force => true do |t|
-    t.string   "IPLineCode"
-    t.string   "Description"
-    t.string   "Num"
-    t.string   "Variable"
-    t.string   "TraceInfo"
-    t.string   "Method"
+  create_table "dts", :primary_key => "Num", :force => true do |t|
+    t.string   "Defect",        :limit => 50
+    t.string   "Category",      :limit => 50
     t.string   "File"
-    t.string   "IPLine"
-    t.string   "Review"
-    t.string   "Category"
-    t.string   "Defect"
-    t.string   "PreConditions"
-    t.string   "StartLine"
+    t.string   "Method"
+    t.string   "Module",        :limit => 20
+    t.string   "Variable",      :limit => 50
+    t.integer  "StartLine"
+    t.integer  "IPLine"
+    t.string   "IPLineCode",    :limit => 200
+    t.string   "Judge",         :limit => 15
+    t.integer  "Review",        :limit => 1
+    t.string   "Description"
+    t.text     "PreConditions", :limit => 2147483647
+    t.text     "TraceInfo",     :limit => 2147483647
+    t.text     "Code",          :limit => 2147483647
     t.integer  "project_id"
-    t.datetime "created_at",    :null => false
-    t.datetime "updated_at",    :null => false
+    t.datetime "created_at"
+    t.datetime "updated_at"
+    t.integer  "id",                                  :null => false
   end
 
   create_table "enabled_modules", :force => true do |t|
@@ -906,7 +916,6 @@ ActiveRecord::Schema.define(:version => 20150911064528) do
     t.datetime "created_on"
     t.integer  "comments_count",               :default => 0,  :null => false
     t.integer  "course_id"
-    t.datetime "updated_on"
   end
 
   add_index "news", ["author_id"], :name => "index_news_on_author_id"