customize model của CI_Model

application/core/MY_Model.php

+<?php defined('BASEPATH') or exit('No direct script access allowed');
+
+class MY_Model extends CI_Model
+{
+    public function __construct()
+    {
+        parent::__construct();
+    }
+
+    /**
+     * Hàm ghi ra log php câu lệnh SQL để debug
+     *
+     * @param null $action_name
+     * @param bool $flag
+     */
+    public function sql_log($action_name=null, $flag=true)
+    {
+        if ($flag) {
+            if (empty($action_name)) {
+                $action_name = date('Y-m-d H:i:s');
+            }
+            error_log('['.$action_name.'] SQL: '. $this->db->last_query());
+        }
+    }
+}
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