[英]Codeigniter/Postgresql: Fatal error: Call to a member function num_rows() on a non-object
[英]Codeigniter : Fatal error: Call to a member function num_rows() on a non-object
我在Codeigniter的腳本鏈接中遇到問題。 我有這個網址:-
localhost / index.php / admin / orders /它可以獲取所有產品訂單,但是當我在鏈接末尾添加任何字符時,如下所示:
localhost / index.php / admin / orders / ggg用戶看到一些錯誤消息。
Fatal error: Call to a member function num_rows() on a non-object in
如何保存我的鏈接,並隱藏此消息。
我的控制器:
function orders()
{
$data['orders'] = $this->admin_model->getOrderList();
$data['total'] = $this->admin_model->getOrderCount();
$this->load->view('admin/orders',$data);
}
我的模特:
function getOrderList()
{
$page = $this->uri->segment(3);
if($page=='')
$page=1;
$start = ($page-1)*RECORDS_PER_PAGE;
$end = RECORDS_PER_PAGE;
$this->db->select("*");
$this->db->limit($end,$start);
$this->db->order_by('order_id','DESC');
$result = $this->db->get('wg_orders');
if($result->num_rows()>0)
return $result->result();
else
return 'empty';
}
您也可以使用count()
函數。
在控制器中
function orders()
{
$data['orders'] = $this->admin_model->getOrderList();
$data['total'] = $this->admin_model->getOrderCount();
$this->load->view('admin/orders',$data);
}
在模型中
function getOrderList()
{
$page = $this->uri->segment(3);
if($page=='')
$page=1;
$start = ($page-1)*RECORDS_PER_PAGE;
$end = RECORDS_PER_PAGE;
$query = $this->db->query("SELECT * FROM table_name WHERE (your_argument) LIMIT $end, $start ORDER BY order_id DESC ");
$result = $query->result_array();
$count = count($result);
if($count>0)
{
return $result;
}
else
{
return 'empty';
}
}
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