Codeigniter：模型 foreach 将数组传递给控制器​​ -> 以查看

Question

这是我的模型 - 我想分配行并在视图页面上回显，例如

我的模特：

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; 
}

我的控制者：

public function dsduan() {

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

我的观点：

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

如何正确地将模型数组传递给控制器​​，以便在视图中回显？ 我的观点错误：

A PHP Error was encountered

Severity: Notice

Message: Undefined variable: id

Filename: views/danhsachduan.php

Line Number: 44

Answer 1

在您的模型中，您使用二维数组：

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

然后在您的控制器中将此数组传递给视图。

所以如果你想在视图中访问二维数组，你必须使用 foreach 循环。

例如更改模型中的数组，如下所示：

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

并在您的视图访问数组中使用：

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

Answer 2

像这样更新你的视图

<?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

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; 
}

Answer 4

在codeigniter中，它在将变量从控制器绑定到视图时使用extract()方法。在这种情况下，您可以这样做。

在模型中

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; 
}

在控制器中

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

}

在视图中，如果你的数组是多维的，可以这样使用，

<?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 } ?>

如果你的数组是一维的，你可以这样使用，

   <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 5

修改您的代码。请用您的代码替换下面。

型号：

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;
}

控制器：

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

查看：

<?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 } ?>