Codeigniter：模型foreach将数组传递给控制器​​->查看

Question

Here is my model - I want to assign the rows and echo out on the view page eg

My Model:

public function dsduan(){

       $data   =   array();
       $q = $this->db->query("SELECT duan.id, duan.tenduan, duan.diachi, quan.quan, duan.tdt, duan.mdxd, duan.tt, duan.cdt, duan.dvql, duan.dvtk, duan.dvtc, duan.dvgs, duan.loai, duan.tienich, duan.noidung, duan.hinhanh FROM duan LEFT JOIN quan ON duan.quan=quan.id ORDER BY duan.tenduan ASC");

        if ($q->num_rows == 1)
        { 
            foreach ($q->result() as $row)
            {                  
                $data[]['id'] = $row->id; 
                $data[]['tenduan'] = $row->tenduan;
                $data[]['diachi'] = $row->diachi;
                $data[]['quan'] = $row->quan;                   
            }
        }

        return $data; 
}

My Controller:

public function dsduan() {

     $this->load->model('madmin');
     $duan = $this->madmin->dsduan();
     $this->load->view('danhsachduan', $duan);        
}

My View:

<td><?php echo $id; ?></td>
<td><?php echo $tenduan; ?></td>
<td><?php echo $diachi; ?></td>
<td><?php echo $quan; ?></td>

How do I properly pass my model array to my controller so that I can echo out on my view? My view Error:

A PHP Error was encountered

Severity: Notice

Message: Undefined variable: id

Filename: views/danhsachduan.php

Line Number: 44

Answer 1

In your model you use two dimensional array:

$data[]['id'] = $row->id;

then in your controller you pass this array to view.

so if you want to access two dimensional array into your view, you have to use foreach loop.

such as change your array in model like following:

$data['id'][] = $row->id;

and in your view access array using:

foreach($id as $res)
{
   echo $res;
}

Answer 2

Have modified your code. Kindly replace below with your code.

Model:

public function dsduan()
{
     $q = $this->db->query("SELECT duan.id, duan.tenduan, duan.diachi, quan.quan, duan.tdt, duan.mdxd, duan.tt, duan.cdt, duan.dvql, duan.dvtk, duan.dvtc, duan.dvgs, duan.loai, duan.tienich, duan.noidung, duan.hinhanh FROM duan LEFT JOIN quan ON duan.quan=quan.id ORDER BY duan.tenduan ASC");

     if($q->num_rows() > 0)
         return $q->result();
     return false;
}

Controller:

public function dsduan() 
{    
     $this->load->model('madmin');
     $data['duan'] = $this->madmin->dsduan();
     $this->load->view('danhsachduan', $data);        
}

View :

<?php foreach($duan as $d) { ?>
    <td><?php echo $d->id; ?></td>
    <td><?php echo $d->tenduan; ?></td>
    <td><?php echo $d->diachi; ?></td>
    <td><?php echo $d->quan; ?></td>
<?php } ?>

Answer 3

In codeigniter, it use extract() method when binding variable from controller to view. In this case, you can do like this.

In Model

public function dsduan()
{

       $data   =   array();
       $q = $this->db->query("SELECT duan.id, duan.tenduan, duan.diachi, quan.quan, duan.tdt, duan.mdxd, duan.tt, duan.cdt, duan.dvql, duan.dvtk, duan.dvtc, duan.dvgs, duan.loai, duan.tienich, duan.noidung, duan.hinhanh FROM duan LEFT JOIN quan ON duan.quan=quan.id ORDER BY duan.tenduan ASC");

       if ($q->num_rows)
       {
            $data = $q->result_array();
       }

        return $data; 
}

In Controller

public function dsduan()
{
        $this->load->model('madmin');
        $data['duan'] = $this->madmin->dsduan();
        $this->load->view('danhsachduan', $data);

}

In View , if your array is multi-dimensional, you can use like this,

<?php foreach($duan as $d) { ?>
   <td><?php echo $d['id']; ?></td>
   <td><?php echo $d['tenduan']; ?></td>
   <td><?php echo $d['diachi']; ?></td>
   <td><?php echo $d['quan']; ?></td>
<?php } ?>

if your array is one-dimensional, you can use like this,

   <td><?php echo $duan['id']; ?></td>
   <td><?php echo $duan['tenduan']; ?></td>
   <td><?php echo $duan['diachi']; ?></td>
   <td><?php echo $duan['quan']; ?></td>

Answer 4

update your view like this

<?php foreach($duan as $d) { ?>
    <td><?php echo $d['id']; ?></td>
    <td><?php echo $d['tenduan']; ?></td>
    <td><?php echo $d['diachi']; ?></td>
    <td><?php echo $d['quan']; ?></td>
<?php } ?>

Answer 5

public function dsduan(){

   $data   =   array();
   $q = $this->db->query("SELECT duan.id, duan.tenduan, duan.diachi, quan.quan, duan.tdt, duan.mdxd, duan.tt, duan.cdt, duan.dvql, duan.dvtk, duan.dvtc, duan.dvgs, duan.loai, duan.tienich, duan.noidung, duan.hinhanh FROM duan LEFT JOIN quan ON duan.quan=quan.id ORDER BY duan.tenduan ASC");

    if ($q->num_rows == 1)
    { 
        foreach ($q->result() as $row)
        {                  
            $data['id'] = $row->id; 
            $data['tenduan'] = $row->tenduan;
            $data['diachi'] = $row->diachi;
            $data['quan'] = $row->quan;                   
        }
    }

    return $data; 
}