数据表搜索框不起作用

Question

我使用datatable从mysql获取数据。数据表显示数据，但是当我从搜索框中搜索任何数据时。它会显示一条警告信息。

这是我的型号代码。

$this->db->from($this->table);
    $i=0;//for search box.

    foreach ($this->column_search as $item)//take column_search item in the loop check request and provide result. 
    {
        if($_POST['search']['value'])//search box take request value if it's POST request
        {
            if($i===0) // first loop. if when i is equal and identical
            {
                $this->db->group_start(); // open bracket. query Where with OR clause better with bracket. because maybe can combine with other WHERE with AND.
                $this->db->like($item, $_POST['search']['value']);
            }
            else
            {
                $this->db->or_like($item, $_POST['search']['value']);
            }

            if(count($this->column_search) - 1 == $i) //last loop
                $this->db->group_end(); //close bracket
        } 
        $i++;
    }
    if(isset($_POST['order'])) // here order processing
    {
        $this->db->order_by($this->column_order[$_POST['order']['0']['column']], $_POST['order']['0']['dir']);
    } 
    else if(isset($this->order))
    {
        $order = $this->order;
        $this->db->order_by(key($order), $order[key($order)]);
    }

Answer 1

它可能缺少列，检查结果数据