我希望能够从sql数据库更新和删除产品列表中的项目。我已经列出了数据库中的表格,我可以阅读并插入新产品,但我不确定如何更新产品或删除它?任何建议或教程都会很好吗?我尝试了一些,但似乎没有工作。 这是我展示产品和插入新产品的代码
Product.php - controller
<?php
if (! defined('BASEPATH')) exit('No direct script access allowed');
class Product extends CI_Controller {
function __construct()
{
parent::__construct();
$this->load->helper('url');
$this->load->model('product_model');
}
public function index()
{
$data['product_list'] = $this->product_model->getproduct();
$this->load->view('header');
$this->load->view('nav');
$this->load->view('product', $data);
$this->load->view('footer');
}
public function add_form()
{
$this->load->view('header');
$this->load->view('nav');
$this->load->view('insert');
$this->load->view('footer');
}
public function insert_product()
{
$pdata['Name'] = $this->input->post('Name');
$pdata['Type'] = $this->input->post('Type');
$pdata['Price'] = $this->input->post('Price');
$res = $this->product_model->insert_product($pdata);
if($res){
header('location:'.base_url()."index.php/Product/index");
}
}
}
?>
Product_model.php
<?php
class Product_model extends CI_Model {
function __construct()
{
parent::__construct();
$this->load->database();
}
public function getproduct()
{
$query = $this->db->get('testProduct');
return $query->result();
}
public function insert_product($data)
{
return $this->db->insert('testProduct', $data);
}
}
?>
product.php - 查看
<h2> Product</h2>
<table width="600" border="1" cellpadding="5">
<tr>
<th scope="col">Id</th>
<th scope="col">Name</th>
<th scope="col">Type</th>
<th scope="col">Price</th>
</tr>
<?php foreach ($product_list as $p_key){ ?>
<tr>
<td><?php echo $p_key->id; ?></td>
<td><?php echo $p_key->Name; ?></td>
<td><?php echo $p_key->Type; ?></td>
<td><?php echo $p_key->Price; ?></td>
<td width="40" align="left" ><a href="#" <?php echo $p_key->id;?> >Edit</a></td>
<td width="40" align="left" ><a href="#" <?php echo $p_key->id;?>>Delete </a></td>
</tr>
<?php }?>
<tr>
<td colspan="7" align="right"> <a href="<?php echo base_url();? >index.php/Product/add_form">Insert New Product</a></td>
</tr>
</table>
答案 0 :(得分:1)
您正在制作的内容称为CRUD - 创建,读取,更新,删除。有很多doing CRUD with CodeIgniter in Google的例子。
以下是(简化)简化概念样本。
根据您的HTML,添加编辑和删除产品的链接:
<td width="40" align="left">
<a href="<?php echo base_url();?>/index.php/product/edit/<?php echo $p_key->id;?>">Edit</a>
<!-- Don't really delete like this, seciruty issue! Just shown as a concept for manipulating records with IDs -->
<a href="<?php echo base_url();?>/index.php/product/delete/<?php echo $p_key->id;?>">Delete</a>
</td>
在Product.php - controller中,我们将添加新方法来编辑和删除
public function edit($id)
{
if($_SERVER['REQUEST_METHOD'] == "POST")
{
// get fields from form and update
// database record with them
$pdata['Name'] = $this->input->post('Name');
$pdata['Type'] = $this->input->post('Type');
$pdata['Price'] = $this->input->post('Price');
$this->product_model->update_product($id, $pdata);
}
else
{
// show form to edit product
// need to get product from database and pass to a view
$product = $this->product_model->getproduct_by_id($id);
$this->load->view('header');
$this->load->view('nav');
$this->load->view('edit', array("product" => $product));
$this->load->view('footer');
}
}
public function delete($id)
{
$this->product_model->delete($id);
}
edit.php - 查看
<form action="/index.php/product/edit/<?php echo $product->id ?>" method="post">
<table>
<tr>
<td><input name="name" value="<?php echo $product->Name; ?>"></td>
</tr>
<tr>
<td><input name="type" value="<?php echo $product->Type; ?>"></td>
</tr>
<tr>
<td><input name="price" value="<?php echo $product->Price; ?>"></td>
</tr>
<tr>
<td>
<input type="submit" value="Update">
</td>
</tr>
</table>
</form>
product_model.php
public function update_product($id, $pdata)
{
$this->db->where("product_id", $id);
$this->db->update("product", $pdata);
}