Multiple product quantity by custom field value

[BKintera]

Hi everyone,

My client wants more columns in cart view, and those columns should have values of custom fields and some columns need to show product quantity * customfield value.

For example, product is "Package of Egg boxes", one package of Egg boxes have 500 egg boxes and when someone add to cart 2 packages of Egg Boxes in cart view there should be column "Transport package (pcs)" and number 1.000 in that column.

You can see product details page here:

http://panapac.moderanweb.rs/en/products/menu-boxes/menu-box-mb-1-orange-panapac

3 out of 4 customfields from product details page should be in cart view as well (Primary package(pcs),  Transport package (pcs) and Transport package (m³))

I have managed to add column "Transport package (m³):" in cart view, so I know how to edit cart view and add more columns, but I'm not satisfied how I did this, and here is why, this is my code in override of default_pricelist.php file:

Code Select Expand


<td class="zapremina">
        <?php
            if ($prow->category_name == 'Egg boxes' || $prow->category_name == 'Kutije za jaja') {
                echo '<span class="kubikaza">' . $prow->quantity * 0.2 . '</span>';
            }
            if ($prow->category_name == 'Menu boxes' || $prow->category_name == 'Kutije za hranu') {
                echo '<span class="kubikaza">' . $prow->quantity * 0.205 . '</span>';
            }
            
            if ($prow->product_name == 'Tacna - T 073 Crna' || $prow->product_name == 'Tray - T 073 Black' || $prow->product_name == 'Tacna - T 073 Bela' || $prow->product_name == 'Tray - T 073 White') {
                echo '<span class="kubikaza">' . $prow->quantity * 0.125 . '</span>';
            }
            if ($prow->product_name == 'Tacna - T 073A Crna' || $prow->product_name == 'Tray - T 073A Black' || $prow->product_name == 'Tacna - T 073A Bela' || $prow->product_name == 'Tray - T 073A White') {
                echo '<span class="kubikaza">' . $prow->quantity * 0.130 . '</span>';
            }
            if ($prow->product_name == 'Tacna - T 168 Bela' || $prow->product_name == 'Tray - T 168 White') {
                echo '<span class="kubikaza">' . $prow->quantity * 0.170 . '</span>';
            }
        ?>
    </td>



So, as you can see, instead of few simple lines of code like:

Code Select Expand


<td class="zapremina">
        <?php echo '<span class="kubikaza">' . $prow->quantity * [b]customfield value[/b] . '</span>'; ?>
</td>


I had to add many if statements to target only products with 0.2m³ or 0.13m³ etc. and that is ok for now, but there will be more and more products.


My question is:

How can I call customfield value, so I dont need to use so many if statements?

P.S. As you can probably see my php knowladge isn't so good.


Joomla 3.4.7
VirtueMart 3.0.12


Thanks in advance,
Milan