diff --git a/disable/endorse-sql-table-model.cpp b/disable/endorse-sql-table-model.cpp
new file mode 100644
index 0000000..ea45f47
--- /dev/null
+++ b/disable/endorse-sql-table-model.cpp
@@ -0,0 +1,88 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil -*- */
+/*
+ * Copyright (c) 2013, Regents of the University of California
+ *                     Yingdi Yu
+ *
+ * BSD license, See the LICENSE file for more information
+ *
+ * Author: Yingdi Yu <yingdi@cs.ucla.edu>
+ */
+
+#include "endorse-sql-table-model.h"
+
+#ifndef Q_MOC_RUN
+#include "logging.h"
+#endif
+
+
+INIT_LOGGER("EndorseSqlTableModel");
+
+EndorseSqlTableModel::EndorseSqlTableModel(QObject * parent, QSqlDatabase db)
+  : QSqlTableModel(parent, db)
+{}
+  
+EndorseSqlTableModel::~EndorseSqlTableModel()
+{}
+
+Qt::ItemFlags 
+EndorseSqlTableModel::flags ( const QModelIndex & index )
+{
+  if(index.column() == 3)
+    {
+      _LOG_DEBUG("index: row: " << index.row() << " " << index.column() << " check!");
+      return Qt::ItemIsSelectable|Qt::ItemIsEnabled|Qt::ItemIsUserCheckable;
+    }
+  else
+    {
+      _LOG_DEBUG("index: row: " << index.row() << " " << index.column() << " no-check!");
+      return  QSqlTableModel::flags(index);
+    }
+}
+
+bool 
+EndorseSqlTableModel::setData ( const QModelIndex & index, const QVariant & value, int role)
+{
+  bool success = true;
+ 
+  if (index.column() == 3)
+    {
+      _LOG_DEBUG("setData: " << role);
+      if(role == Qt::CheckStateRole)
+	{
+	  QString val = (value==Qt::Checked)?"1":"0";
+	  return QSqlTableModel::setData(index, val, role);
+	}
+      
+      return true;
+    }
+  else
+    {
+      return QSqlTableModel::setData(index, value, role);
+    }
+}
+
+QVariant 
+EndorseSqlTableModel::data ( const QModelIndex & index, int role) const
+{
+  QVariant value = QSqlTableModel::data(index, role);
+  // if (index.column() == 3 && role == Qt::CheckStateRole)
+  if (index.column() == 3)
+    {
+      if(role == Qt::CheckStateRole)
+	{
+	  bool aBool = ((value.toInt() != 0) ? 1 : 0);
+	  if (aBool)
+	    return Qt::Checked;
+	  else
+	    return Qt::Unchecked;
+	}
+      if(role == Qt::DisplayRole)
+	  return QVariant();
+
+      return value;
+    }
+  else
+    {
+      return value;
+    }
+}