Codeigniter cart - add ketchup on pizza - php

Question

I'm building pizzeria app in CI using cart library.
For some products (pizza, salad...) there is an option to add ingredients.
This is what I have:
Add_to _cart buton
<button class="but_add_cart"
data-qty="1"
data-productid="<?php echo $food_item->item_id; ?>"
data-productname="<?php echo $food_item->item_name; ?>"
data-productprice="<?php echo $food_item->item_price; ?>"
data-adds="<?php echo $food_item->item_price; ?>
With jquery I'm calling ajax
$('.but_add_cart').click(function(){
allVals = []
$('#chk :checked').each(function() {
allVals.push($(this).val());
});
// here I'm getting all ingredients from checkboxes and push to array
var product_id = $(this).data("productid");
var description = $(this).data("description");
var product_name = $(this).data("productname");
var product_price = $(this).data("productprice");
var product_qty = $(this).data("qty");
if(product_id != '' && product_id > 0)
{
$.ajax({
url:"<?php echo base_url(); ?>menu/add",
type:"POST",
async: true,
data:{product_id:product_id, description:description, product_name:product_name, product_qty:product_qty, product_price:product_price, allVals:allVals},
success:function(data)
{
$('#cart_details').html(data);
}
});
}
else
{
alert("Please Enter quantity");
}
});
and add function is:
function add()
{
$data = array(
"id" => $_POST["product_id"],
"qty" => $_POST["product_qty"],
"price" => $_POST["product_price"],
"name" => $_POST["product_name"],
"description" => $_POST["description"],
"allVals" => $_POST["allVals"]
);
print_r($data);
//$this->cart->insert($data);
//echo $this->view();
}
from print_r I have this array
Array
(
[id] => 1
[qty] => 1
[price] => 19.90
[name] => Pepperoni Pizza
[description] => Extra-virgin olive oil, garlic, mozzarella cheese
[allVals] => Array
(
[0] => 2
[1] => 3
[2] => 4
[3] => 6
)
)
Now, in the cart, I want to group Pepperoni pizza with ingredients (2, 3, 4, 6) as one item. If I add one more Pepperoni pizza but with different ingredients, it should be separate item in the cart. I tried to add some random number to rowid but it gives me some error.
Also, every ingredients coast so I have to add these prices to subtotal price for each item in the basket.
I know problem is quite complex but I would like to know if my approach is good or there is a better way to to do this?

Answer 1

Is the answer here not to use the ingredients as the key?
asort($_POST['allVals']);
$key = implode('',$_POST['allVals']);
Combine the Product ID and $key and see if that product exists in the cart. If it does then update the quantity. Your ingredients are your unique key?