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@papertank
Created Jun 26, 2012
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Codeigniter Cart Product Names Fix - Papertank
<?php if (!defined('BASEPATH')) exit('No direct access allowed.');
class MY_Cart extends CI_Cart {
public $CI;
function __construct()
{
parent::__construct();
$this->CI =& get_instance();
}
function format_number($n = '')
{
if ($n == '')
{
return '';
}
// Remove anything that isn't a number or decimal point.
$n = trim(preg_replace('/([^0-9\.])/i', '', $n));
return number_format($n, 2, '.', '');
}
/**
* Insert
*
* @access private
* @param array
* @return bool
*/
function _insert($items = array())
{
// Was any cart data passed? No? Bah...
if ( ! is_array($items) OR count($items) == 0)
{
log_message('error', 'The insert method must be passed an array containing data.');
return FALSE;
}
// --------------------------------------------------------------------
// Does the $items array contain an id, quantity, price, and name? These are required
if ( ! isset($items['id']) OR ! isset($items['qty']) OR ! isset($items['price']) OR ! isset($items['name']))
{
log_message('error', 'The cart array must contain a product ID, quantity, price, and name.');
return FALSE;
}
// --------------------------------------------------------------------
// Prep the quantity. It can only be a number. Duh...
$items['qty'] = trim(preg_replace('/([^0-9])/i', '', $items['qty']));
// Trim any leading zeros
$items['qty'] = trim(preg_replace('/(^[0]+)/i', '', $items['qty']));
// If the quantity is zero or blank there's nothing for us to do
if ( ! is_numeric($items['qty']) OR $items['qty'] == 0)
{
return FALSE;
}
// --------------------------------------------------------------------
// Validate the product ID. It can only be alpha-numeric, dashes, underscores or periods
// Not totally sure we should impose this rule, but it seems prudent to standardize IDs.
// Note: These can be user-specified by setting the $this->product_id_rules variable.
if ( ! preg_match("/^[".$this->product_id_rules."]+$/i", $items['id']))
{
log_message('error', 'Invalid product ID. The product ID can only contain alpha-numeric characters, dashes, and underscores');
return FALSE;
}
// --------------------------------------------------------------------
// Validate the product name. It can only be alpha-numeric, dashes, underscores, colons or periods.
// Note: These can be user-specified by setting the $this->product_name_rules variable.
/*
if ( ! preg_match("/^[".$this->product_name_rules."]+$/i", $items['name']))
{
log_message('error', 'An invalid name was submitted as the product name: '.$items['name'].' The name can only contain alpha-numeric characters, dashes, underscores, colons, and spaces');
return FALSE;
}
*/
// --------------------------------------------------------------------
// Prep the price. Remove anything that isn't a number or decimal point.
$items['price'] = trim(preg_replace('/([^0-9\.])/i', '', $items['price']));
// Trim any leading zeros
$items['price'] = trim(preg_replace('/(^[0]+)/i', '', $items['price']));
// Is the price a valid number?
if ( ! is_numeric($items['price']))
{
log_message('error', 'An invalid price was submitted for product ID: '.$items['id']);
return FALSE;
}
// --------------------------------------------------------------------
// We now need to create a unique identifier for the item being inserted into the cart.
// Every time something is added to the cart it is stored in the master cart array.
// Each row in the cart array, however, must have a unique index that identifies not only
// a particular product, but makes it possible to store identical products with different options.
// For example, what if someone buys two identical t-shirts (same product ID), but in
// different sizes? The product ID (and other attributes, like the name) will be identical for
// both sizes because it's the same shirt. The only difference will be the size.
// Internally, we need to treat identical submissions, but with different options, as a unique product.
// Our solution is to convert the options array to a string and MD5 it along with the product ID.
// This becomes the unique "row ID"
if (isset($items['options']) AND count($items['options']) > 0)
{
$rowid = md5($items['id'].implode('', $items['options']));
}
else
{
// No options were submitted so we simply MD5 the product ID.
// Technically, we don't need to MD5 the ID in this case, but it makes
// sense to standardize the format of array indexes for both conditions
$rowid = md5($items['id']);
}
// --------------------------------------------------------------------
// Now that we have our unique "row ID", we'll add our cart items to the master array
// let's unset this first, just to make sure our index contains only the data from this submission
unset($this->_cart_contents[$rowid]);
// Create a new index with our new row ID
$this->_cart_contents[$rowid]['rowid'] = $rowid;
// And add the new items to the cart array
foreach ($items as $key => $val)
{
$this->_cart_contents[$rowid][$key] = $val;
}
// Woot!
return TRUE;
}
}
@smhnaji

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@smhnaji smhnaji commented Jul 7, 2016

Perfect, it saved my life already on production!

Why don't you gist it publicly?

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