我想在dbign中进行codeigniter分页。
我的模特: (更新)
public function get_all_produk_row($url = ''){
data = array();
$this->db->where(array('kategori.url'=>$url,'produk.status_produk'=>'1'));
$this->db->order_by('kategori_id');
$this->db->join('kategori','kategori.id_kategori=produk.kategori_id');
$this->db->num_rows();
return $data;
}
但我收到致命错误:Call to undefined method CI_DB_mysql_driver::num_rows()
。
我该如何解决?
我的数据库
类别:
id_kategori
kode_kategori
url
Produk:
id_produk
kategori_id
kode_produk
status_produk
答案 0 :(得分:1)
在调用get()
函数后,您不能获得任何行:
public function get_all_produk_row($url = '')
{
$data = array();
$this->db->where(array('kategori.url'=>$url,'produk.status_produk'=>'1'));
$this->db->join('kategori','kategori.id_kategori=produk.kategori_id');
$this->db->order_by('kategori_id');
$query = $this->db->get();
if ($query->num_rows() > 0)
{
$data = $query->result_array();
}
return $data;
}
答案 1 :(得分:0)
您在这里缺少表名
public function get_all_produk_row($url = '')
{
$data = $this->db->get_where("kategori",array('kategori.url'=>$url,'produk.status_produk'=>'1'))->num_rows();
//or one method can be if you can write query
//$data = $this->db->query("select count(*) as total tbl_name")->row()->total;
return $data;
}
答案 2 :(得分:0)
您的查询应如下所示: -
$this->db->select('*');
$this->db->from('table');
$this->db->where($your_conditions);
$num_results = $this->db->count_all_results();
OR
$this->db->select('*');
$this->db->where('whatever');
$query = $this->db->get('table');
$num = $query->num_rows();