Php oop product management product update
From w3cyberlearnings
Contents |
Objective
This page uses to edit or update the product based on the product's id.
edit.php
Before we can update or edit product we need to get the product first. We get the product based on the product id.
<?php
require_once 'product.php';
if (isset($_POST['update'])) {
$prod = new product();
$prod->id = $_POST['id'];
$prod->pname = $_POST['name'];
$prod->price = $_POST['price'];
$prod->seller = $_POST['seller'];
if ($prod->update_db()) {
header('Location: detail.php?id=' . $_POST['id']);
} else {
header('Location:list.php');
}
}
?>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Edit</title>
</head>
<body>
<?php
if (!empty($_REQUEST['id'])) {
$product1 = new product();
$product1->id = $_REQUEST['id'];
$produc = $product1->get_product_by_id();
$product = $produc[0];
} else {
header('Location:list.php');
}
?>
<form method="post" action="edit.php">
<table border="0">
<tr>
<td colspan="2">Update Product Information</td>
</tr>
<tr>
<td>Product name:</td>
<td>
<input type="text" name="name" size="20"
maxlength="20" value="<?php echo $product['pname']; ?>"/>
</td>
</tr>
<tr>
<td>Price ($$$):</td>
<td><input type="text" name="price" size="3"
maxlength="5" value="<?php echo $product['price']; ?>"/>
</td>
</tr>
<tr>
<td>Seller:</td>
<td><input type="text" name="seller"
size="20" maxlength="20" value="<?php echo $product['seller']; ?>"/>
</td>
</tr>
<tr>
<td></td>
<td><input type="submit" name="update" value="Update" /></td>
</tr>
</table>
<input type="hidden" name="id" value="<?php echo $product['id']; ?>"/>
</form>
<?php require_once 'menu.php'; ?>
</body>
</html>
get product based on the product id
When the product id is not there we redirect user to the list.php page.
<?php
if (!empty($_REQUEST['id'])) {
$product1 = new product();
$product1->id = $_REQUEST['id'];
$produc = $product1->get_product_by_id();
$product = $produc[0];
} else {
header('Location:list.php');
}
// access product by associative array
/*
$product['pname'] // product name
$product['price'] // product price
*/
?>
display HTML edit product form
We generate a HTML form for edit product and we hide the product id in the hidden field.
<form method="post" action="edit.php">
<table border="0">
<tr>
<td colspan="2">Update Product Information</td>
</tr>
<tr>
<td>Product name:</td>
<td>
<input type="text" name="name" size="20"
maxlength="20" value="<?php echo $product['pname']; ?>"/>
</td>
</tr>
<tr>
<td>Price ($$$):</td>
<td><input type="text" name="price" size="3"
maxlength="5" value="<?php echo $product['price']; ?>"/></td>
</tr>
<tr>
<td>Seller:</td>
<td><input type="text" name="seller" size="20"
maxlength="20" value="<?php echo $product['seller']; ?>"/></td>
</tr>
<tr>
<td></td>
<td><input type="submit" name="update" value="Update" /></td>
</tr>
</table>
<input type="hidden" name="id" value="<?php echo $product['id']; ?>"/>
</form>
<?php require_once 'menu.php'; ?>
process HTML form
After user make all the changes, now it is time to process the user input data and update the record accordingly.
<?php
require_once 'product.php';
if (isset($_POST['update'])) {
$prod = new product();
// assign a new record
$prod->id = $_POST['id'];
$prod->pname = $_POST['name'];
$prod->price = $_POST['price'];
$prod->seller = $_POST['seller'];
// call the update product
if ($prod->update_db()) {
// after update the product, we redirect user to the product detail
header('Location: detail.php?id=' . $_POST['id']);
} else {
// if we can not update the record, we display the product list to the user
header('Location:list.php');
}
}
?>
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