多次点击发送按钮不应新建多个作业

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@@ -1 +1 @@
-{"access_token":"yFUfEXFu0_Pl_jdojoRv6eA8pmGjyRkRIL1VCB2HZ4kVJhEq6crriyCRCI-_u5QbWgtepiIOvqTHtXpKgzMuaB7Eo7MjlMcXeecqhzTjnvpivK5HUzGhZXBG1dk_BxicJAFlCAARIN","expires_in":7200,"got_token_at":1461934858}
+{"access_token":"bFlabz0uBcoIBfWL7nBJkgpl26aOWDy-dyCOvH_MjUo_hMOOKG83WV1cCL1MG6H-AE-6eMI0iyLoOoAMv9Y3pFFsLYD-GAGr3UH9fT8OqeHMDlFhXyRTvHv9l2QPHGpcARUcCGANEH","expires_in":7200,"got_token_at":1462934760}

app/views/users/_user_homework_form.html.erb

@@ -3,6 +3,7 @@
 
     <%= javascript_include_tag 'homework','baiduTemplate' %>
     <script type="text/javascript">
+      var first_click = true;
       $(function(){
         if($.trim($("#anonymous_comment").val()) == 1) {
             $("#anonymous_comment").attr('checked',true);
@@ -70,10 +71,12 @@
                   contentmsg:params.contentmsg,
                   textarea:params.textarea
               });*/
-              if(is_checked){
+              if(first_click && is_checked){
                   if(flag){
+                      first_click = false;
                       return true;
                   }else{
+                      first_click = false;
                       $(this)[0].submit();
                       return false;
                   }

db/schema.rb

@@ -11,7 +11,7 @@
 #
 # It's strongly recommended to check this file into your version control system.
 
-ActiveRecord::Schema.define(:version => 20160504060751) do
+ActiveRecord::Schema.define(:version => 20160509025404) do
 
   create_table "activities", :force => true do |t|
     t.integer  "act_id",                                  :null => false
@@ -485,7 +485,7 @@ ActiveRecord::Schema.define(:version => 20160504060751) do
     t.integer  "viewed"
     t.datetime "created_at",          :null => false
     t.datetime "updated_at",          :null => false
-    t.string   "content"
+    t.text     "content"
     t.integer  "status"
     t.integer  "apply_user_id"
     t.integer  "apply_result"
@@ -1107,6 +1107,23 @@ ActiveRecord::Schema.define(:version => 20160504060751) do
     t.integer  "viewed_count",  :default => 0
   end
 
+  create_table "mess", :id => false, :force => true do |t|
+    t.string   "课程名"
+    t.integer  "课程ID",                    :default => 0,  :null => false
+    t.string   "教师姓",                     :default => "", :null => false
+    t.string   "教师名",       :limit => 30, :default => "", :null => false
+    t.string   "主贴名",                     :default => "", :null => false
+    t.integer  "主贴或回帖ID",                 :default => 0,  :null => false
+    t.integer  "回帖对应主贴ID"
+    t.integer  "帖子点赞数"
+    t.integer  "主贴回复数",                   :default => 0,  :null => false
+    t.text     "主贴或回帖内容"
+    t.datetime "发帖时间",                                    :null => false
+    t.integer  "发帖或回帖用户ID",               :default => 0,  :null => false
+    t.string   "发帖或回帖用户姓",                :default => "", :null => false
+    t.string   "发帖或回帖用户名",  :limit => 30, :default => "", :null => false
+  end
+
   create_table "message_alls", :force => true do |t|
     t.integer  "user_id"
     t.integer  "message_id"
@@ -1779,6 +1796,31 @@ ActiveRecord::Schema.define(:version => 20160504060751) do
   add_index "students_for_courses", ["course_id"], :name => "index_students_for_courses_on_course_id"
   add_index "students_for_courses", ["student_id"], :name => "index_students_for_courses_on_student_id"
 
+  create_table "sub_document_comments", :force => true do |t|
+    t.text     "content"
+    t.text     "title"
+    t.integer  "sub_domain_id"
+    t.integer  "creator_id"
+    t.integer  "parent_id"
+    t.integer  "reply_id"
+    t.integer  "locked"
+    t.integer  "sticky"
+    t.integer  "org_subfield_id"
+    t.datetime "created_at",      :null => false
+    t.datetime "updated_at",      :null => false
+  end
+
+  create_table "sub_domains", :force => true do |t|
+    t.integer  "org_subfield_id"
+    t.integer  "priority",        :default => 0
+    t.string   "name"
+    t.string   "field_type"
+    t.integer  "hide",            :default => 0
+    t.integer  "status",          :default => 0
+    t.datetime "created_at",                     :null => false
+    t.datetime "updated_at",                     :null => false
+  end
+
   create_table "subfield_subdomain_dirs", :force => true do |t|
     t.integer  "org_subfield_id"
     t.string   "name"