We are selling ready made packs ( total weight 18 kg ) which is include several food products. But we want to make a special thing to our customers which they should make their packs by selecting our product range.
So that, they should make first a base pack with selected products then they can multiply this package in the checkout section.
What I want to do, modify the checkout section of magento to multiply selected products with a text field and calculate total amount by button.
Like in image…
Does anybody help me to make such a thing?
Personally I would do this with frontend code, in prototype. The reason being that you will have to modify your template anyway and your customers will need javascript enabled to get to your cart anyway.
General approach is to have the onclick for your apply button take the id.value for your quantity text box and then update everything with the quantity class in the cart page. Then have this script call the same update url as the standard update quantities button.