Codeigniter Cart - Check if item added to cart - codeigniter

Question

I'm using the Cart class in Codeigniter. What I want to do should (hopefully!) be simple... but i'm struggling.
On the product page, I have a button to 'add to cart'. What I want to happen is that when the item is already in the cart, the button changes to 'remove from cart'.
<? //if(**not in cart**) { ?>
Add to cart
<? } else { ?>
Remove from cart
<? } ?>
How can I query the cart to see if that item is in there or not and get the 'rowid' so I can use that for a remove function?
Many thanks!

Answer 1

I had a similar problem - I got round it by extending the CI_Cart library with 2 new functions - in_cart() and all_item_count().
<?php
class MY_Cart extends CI_Cart {
function __construct()
{
parent::__construct();
$this->product_name_rules = '\d\D';
}
/*
* Returns data for products in cart
*
* #param integer $product_id used to fetch only the quantity of a specific product
* #return array|integer $in_cart an array in the form (id => quantity, ....) OR quantity if $product_id is set
*/
public function in_cart($product_id = null) {
if ($this->total_items() > 0)
{
$in_cart = array();
// Fetch data for all products in cart
foreach ($this->contents() AS $item)
{
$in_cart[$item['id']] = $item['qty'];
}
if ($product_id)
{
if (array_key_exists($product_id, $in_cart))
{
return $in_cart[$product_id];
}
return null;
}
else
{
return $in_cart;
}
}
return null;
}
public function all_item_count()
{
$total = 0;
if ($this->total_items() > 0)
{
foreach ($this->contents() AS $item)
{
$total = $item['qty'] + $total;
}
}
return $total;
}
}
/* End of file: MY_Cart.php */
/* Location: ./application/libraries/MY_Cart.php */

Answer 2

You could check in your model if the job name or whatever you would like to check already exists. If it exists display delete button else show add.