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I have a problem/question.

My client need to sell one product but the price of this product (digital, so no shipping cost or other) is based on a field in a table. Explain: X categories and Y places. Each combination of X per Y return a different price for the only 1 product.

How can I set the price of this product at "checkout" ? In node Z (where categories is 1 and places is 2, for example) I can write the correct cost value (via preprocess_node, or template function or other), but in the cart?

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You have two options.

  1. You can create one product for each combonation of X and Y and have those as values on the product. If you reference all the products on the node, commerce can turn the value of X and Y into a dropdown which will trigger an ajax update, changing the other data for the product like this price.

  2. The other options if you don't want to create a product for each combonation (my preferred solution), would be to create a pricing rule, custom code is probably needed here, to calculate and set the unit price on the line item based on X/Y data.

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  • 1) 100 categories x 200 places = 2000 products. BRRRR 2) How can I create a pricing rule ? Ok with the Rules module, but how can I insert the "calculated" price in the cart ? – ZioBudda Nov 6 '12 at 11:49
  • You can multiply the line item price based on a variable in rule. If you have some coding ability you code possibly write a case statement but if not you can do the Rules if conditional but again, that's going to be 2000 conditions. You're best bet is to do it programtically. – o_O Nov 12 '12 at 2:41

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