我有以下视图来列出所有产品，在其中您可以删除或编辑特定的产品，点击删除或编辑它将调用控制器，
<?php
$this->load->helper('url');
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>diluks eCommerce - Home</title>
<link href="<?php
echo base_url();
?>Public/scripts/style.css" rel="stylesheet" type="text/css" />
</head>
<body>
<form action="<?php echo base_url();?>index.php/productlist_controller" method="post">
<div class="container">
<?php
include 'header-adminpanel.php';
?>
<div class="level3 clearfix">
<?php
include 'product-sidebar.php';
?>
<div class="body-content">
<div class="items">
<h2>Product List</h2>
<table class="CSSTable" cellspacing="0px" cellpadding="0px">
<tr>
<td>Item Code</td><td>Item Name</td><td>Item Price</td><td>Edit</td><td>Delete</td>
</tr>
<?php foreach($products as $row): ?>
<form method="POST" action="<?php echo base_url();?>index.php/productlist_controller">
<tr>
<td><?php echo $row->itemcode; ?></td><td><?php echo $row->itemname; ?></td><td>$<?php echo $row->itemprice; ?></td><td><center><button name="btn_edit" class="link-button" value="<?php echo $row->itemcode; ?>" type="submit">Edit</button></center></td><td><center><button name="btn_delete" class="link-button" value="<?php echo $row->itemcode; ?>" type="submit">Delete</button></center></td>
</tr>
</form>
<?php endforeach ?>
</table>
</div>
</div>
</div>
<div style="clear:both"></div>
<div class="level4">
<div class="footer-area">
<div class="lined-space"></div>
<div class="site-map" align="left">
<table>
<tr>
<td class="footer-text"><a href="#">About Us</a></td>
<td class="footer-text"><a href="#">Facebook</a></td>
</tr>
<tr>
<td class="footer-text"><a href="#">Contact Us</a></td>
<td class="footer-text"><a href="#">Twitter</a></td>
</tr>
<tr>
<td class="footer-text"><a href="#">FAQs</a></td>
<td class="footer-text"><a href="#">Terms & Conditions</a></td>
</tr>
<tr>
<td class="footer-text"><a href="#">Help</a></td>
</tr>
</table>
</div>
<div class="developer-info">
<a class="developers-text">Designed & Developed By Diluks Software Solutions.</a>
</div>
</div>
</div>
</div>
</form>
</body>
</html>
所以上面视图的控制器看起来像下面的
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
class Productlist_controller extends CI_Controller {
function __construct(){
parent::__construct();
}
public function index()
{
if(isset($_POST["btn_delete"])){
$pid = $_POST["btn_delete"];
$this->load->model('product_model');
$result = $this->product_model->deleteProduct($pid);
if($result==true){
$data = array();
$this->load->model('product_model');
$data['products'] = $this->product_model->availableProductList();
$this->load->view('admin_product_list_view',$data);
}
else{
echo "Oops! Error occured..!";
}
}
else if(isset($_POST["btn_edit"])){
$pid = $_POST["btn_edit"];
$data = array();
$this->load->model('product_model');
$data['product'] = $this->product_model->readProduct($pid);
//$this->load->model('category_model');
//$data['categories'] = $this->category_model->getCategories();
$this->load->view('admin_product_edit_view', $data);
}
}
}
"admin_product_edit_view"用户在点击编辑特定条目时将被重定向，如下所示，
<?php
$this->load->helper('url');
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>diluks eCommerce - Home</title>
<link href="<?php
echo base_url();
?>Public/scripts/style.css" rel="stylesheet" type="text/css" />
</head>
<body>
<form enctype="multipart/form-data" action="<?php
echo base_url();
?>index.php/addproduct_controller" method="post">
<div class="container">
<?php
include 'header-adminpanel.php';
?>
<div class="level3 clearfix">
<?php
include 'product-sidebar.php';
?>
<div class="body-content">
<div class="items">
<h2>Edit Product</h2>
<?php foreach($product as $row){ ?>
<table>
<tr>
<td class="captions">Product Code</td>
<td><input name="txt_pcode" type="text" readonly="true" value="<?php echo $row->itemcode; ?>"/></td>
</tr>
<tr>
<td class="captions">Product Name</td>
<td><input name="txt_pname" type="text" size="40" value="<?php echo $row->itemname; ?>" /></td>
</tr>
<tr>
<td class="captions">Product Price</td>
<td><input name="txt_pprice" type="text" value="<?php echo $row->itemprice; ?>" /></td>
</tr>
<tr>
<td class="captions">Product Category</td>
<td><select name="txt_pcategory">
<?php
foreach($categories as $row)
{
echo '<option value="'.$row->catname.'">'.$row->catname.'</option>';
}
?>
</select></td>
</tr>
<tr>
<td class="captions">Product Description</td>
<td><textarea name="txt_pdesc" style="width:300px;height:100px;"><?php echo $row->itemdesc; ?></textarea></td>
</tr>
<tr>
<td class="captions">Product Image</td>
<td><input type="file" name="userfile" size="20" /></td>
</tr>
<tr>
<td class="captions">Product Options</td>
<td><input name="txt_poptions" size="40" type="text" /><a class="hint"> (Separate by a "," comma)</a></td>
</tr>
<tr><td><input name="btn_add" class="grey-button" type="submit" value="Update" /></td></tr>
</table>
<?php } ?>
<br />
</div>
</div>
</div>
<div style="clear:both"></div>
<div class="level4">
<div class="footer-area">
<div class="lined-space"></div>
<div class="site-map" align="left">
<table>
<tr>
<td class="footer-text"><a href="#">About Us</a></td>
<td class="footer-text"><a href="#">Facebook</a></td>
</tr>
<tr>
<td class="footer-text"><a href="#">Contact Us</a></td>
<td class="footer-text"><a href="#">Twitter</a></td>
</tr>
<tr>
<td class="footer-text"><a href="#">FAQs</a></td>
<td class="footer-text"><a href="#">Terms & Conditions</a></td>
</tr>
<tr>
<td class="footer-text"><a href="#">Help</a></td>
</tr>
</table>
</div>
<div class="developer-info">
<a class="developers-text">Designed & Developed By Diluks Software Solutions.</a>
</div>
</div>
</div>
</div>
</form>
</body>
</html>
现在的问题是在控制器中，我需要加载类别(我已经评论)，以便在编辑视图中显示它们，但是当我取消评论时，类别正在加载，但在项目描述文本区给出错误，说
Message: Undefined property: stdClass::$itemdesc
有了类别模型加载行注释，它工作得很好，除了没有类别将在下拉列表中加载，请有人建议我一个方法来摆脱这个
请在视图中使用
if(isset($row->itemdesc)) echo $row->itemdesc;
我想这会解决你的问题
我看到你得到了一个答案，但我对你的代码有一些建议:
1. 在你的控制器中，你加载模型3次:你应该加载它一次;你可以这样做:
if(!empty($_POST)){
$this->load->model('product_model');
if(isset($_POST["btn_delete"])){
//some code
}elseif(isset($_POST["btn_edit"])){
//some other code
}
}
2. 在视图中加载一个helper:它应该在第1点的第一次验证之后加载到控制器中。
3.在视图中，你应该检查变量的内容，特别是那些你要在循环中使用的，比如$products