php - 无法在 View codeigniter 中显示查询结果

Question

我正在尝试在动态表中显示我的数据库的结果，我正在使用 codeigniter:

这是我的模型:

class Cliente_model extends CI_Model {

function __construct() {
    parent::__construct();
}

public function obtenerDatos() {

    $data = $this->db->get('cliente');
    return $data;
}

这是我的 Controller :

class Cliente extends CI_Controller {

public function __construct()
    {
            parent::__construct();
            $this->load->model('cliente_model');
    }


public function index()
    {   
        $tabla = $this->cliente_model->obtenerDatos();
        $data = $tabla->result_array();
        print_r($data); //This works
        $this->load->view('cliente_view',$data);
    }
}

这是我 View 的表格部分:

<table class="table table-sm table-striped table-bordered table-hover">
    <thead class="thead-dark">
        <tr>
            <th scope="col">Cliente</th>
            <th hidden scope="col">ID</th>
            <th scope="col">Correo 1</th>
            <th scope="col">Correo 2</th>
            <th scope="col">Correo 3</th>
            <th scope="col">Correo 4</th>
            <th scope="col">Correo 5</th>
            <th scope="col">Correo 6</th>
            <th scope="col">Correo 7</th>
            <th scope="col">Correo 8</th>
            <th scope="col">Status</th>
            <th scope="col">Acción</th>
        </tr>
    </thead>
    <tbody>
        <?php foreach ($data as $fila): ?>
        <tr>
            <th scope="row"><?php echo $fila['nombreCliente'];?></td>
            <td hidden><?php echo $fila['idCliente'];?></td>
            <td><?php echo $fila['correoCliente1'];?></td>
            <td><?php echo $fila['correoCliente2'];?></td>
            <td><?php echo $fila['correoCliente3'];?></td>
            <td><?php echo $fila['correoCliente4'];?></td>
            <td><?php echo $fila['correoCliente5'];?></td>
            <td><?php echo $fila['correoCliente6'];?></td>
            <td><?php echo $fila['correoCliente7'];?></td>
            <td><?php echo $fila['correoCliente8'];?></td>
            <?php if ($fila['statusCliente'] == 'Activo') { ?>
            <td><span class="badge badge-pill badge-success">Activo</span></td>
            <?php } else { ?>
            <td><span class="badge badge-pill badge-warning">Inactivo</span></td> 
            <?php } ?>             
            <td><a href="#" title=""><span class="badge badge-pill badge-warning">Editar </span><img src="../imagenes/glyphicons/png/glyphicons-151-edit.png" alt="" title=""></a></a></td>
        </tr>
        <?php endforeach; ?>
    </tbody>
</table>

当我在我的 Controller 中调用 print_r 函数时，$data 变量显示了我想传递给 View 的所有记录，但是当我发送给 View 时，foreach 函数中出现了这些错误:

错误一:

A PHP Error was encountered
Severity: Notice

Message: Undefined variable: data
Filename: views/cliente_view.php

Line Number: 44

Backtrace:

File: C:\AppServ\www\CariLMS\application\views\cliente_view.php
Line: 44
Function: _error_handler

File: C:\AppServ\www\CariLMS\application\controllers\Cliente.php
Line: 17
Function: view

File: C:\AppServ\www\CariLMS\index.php
Line: 315
Function: require_once

错误 2:

A PHP Error was encountered
Severity: Warning

Message: Invalid argument supplied for foreach()

Filename: views/cliente_view.php

Line Number: 44

Backtrace:

File: C:\AppServ\www\CariLMS\application\views\cliente_view.php
Line: 44
Function: _error_handler

File: C:\AppServ\www\CariLMS\application\controllers\Cliente.php
Line: 17
Function: view

File: C:\AppServ\www\CariLMS\index.php
Line: 315
Function: require_once

你知道为什么不起作用吗？

Answer 1

在你的模型函数中写下:

$query = $this->db->get('cliente');
$data = $query->result_array();
return $data;

这在你的 Controller 中:

$data['client']= $this->cliente_model->obtenerDatos();
$this->load->view('cliente_view',$data);

然后将其添加到您的 View 中:

<?php if ($client): foreach($client as $fila):?>
<td><?php echo $fila['correoCliente1'];?></td> 

等...

正如您将看到的，$data['client'] 现在保存着您的数据库信息，您可以通过在 View 中遍历关联数组来读取它。有关查询构建器类的更多信息 here .