Question

我已经将2个表连接到服务器端的数据表中，但它在视图中显示重复的行，我误解了

型号：

var $table = 'user_provider';
    var $column_order = array(null,'u.nm_uprov','u.email','g.nm_gprov'); //set column field database for datatable orderable
    var $column_search = array('u.nm_uprov','u.email','g.nm_gprov');
    var $order = array('u.id_uprov' => 'desc'); // default order 

    function __construct(){
        parent::__construct();
         $this->load->database();

    }

    private function _get_datatables_query()
    {

        $this->db->from($this->table);
        $this->db->select('*');
        $this->db->from('user_provider as u');
        $this->db->join('grup_provider as g','u.id_gprov = g.id_gprov');

        $i = 0;

        foreach ($this->column_search as $item) // loop column 
        {
            if($_POST['search']['value']) // if datatable send POST for search
            {

                if($i===0) // first loop
                {
                    $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)]);
        }
    }

控制器：

public function ajax_list()
    {
        $list = $this->M_user_provider->get_datatables();
        $data = array();
        $no = $_POST['start'];
        foreach ($list as $uprov) {
            $no++;
            $row = array();
            $row[] = $no;
            $row[] = $uprov->nm_uprov;
            $row[] = $uprov->email;
            $row[] = $uprov->nm_gprov;

            //add html for action
            $row[] = '<a class="btn btn-info btn-fill btn-sm" href="javascript:void(0)" title="Edit" onclick="edit_pic('."'". $uprov->id_uprov."'".')"><i class="glyphicon glyphicon-pencil"></i> Edit</a>
                    <a class="btn btn-danger btn-fill btn-sm" href="javascript:void(0)" title="Hapus" onclick="delete_pic('."'".$uprov->id_uprov."'".')"><i class="glyphicon glyphicon-trash"></i> Hapus</a>';

            $data[] = $row;
        }

        $output = array(
                        "draw" => $_POST['draw'],
                        "recordsTotal" => $this->M_user_provider->count_all(),
                        "recordsFiltered" => $this->M_user_provider->count_filtered(),
                        "data" => $data,
                );
        //output to json format
        echo json_encode($output);
    }

表：

用户提供商table
群组提供商table

并在表格的底部显示此＆＃34;显示4个条目中的1到4个（从2个条目中过滤掉）＆＃34;，我不知道错误导致一切正常很好，除了表格显示重复的行。

Answer 1

您要添加两次表格：

$this->db->from($this->table);
$this->db->select('*');
$this->db->from('user_provider as u');

尝试删除第一个“from”子句，因为在第二个子句中添加别名

数据表过滤器显示重复的行

1 个答案: