Rule action to remove a product from the cart? (using the commerce module)

Question

I'm using the commerce module to show product in a site.

I need to create a rule on the event of Calculating the sell price of a product which should involve removing products from the cart in a given condition.

I see that there is an action to Add a product to the Cart. But how do I remove a product from the cart?

Should I use the Remove from list action?

Answer 1

Check what rszrama, the Drupal Commerce leader, says about this:

If you find and delete the line item, it should work just fine. You can do this with the "Delete entity" action. You could also just unset the price of the line item you want deleted during "Calculating the sell price of a product." That's what the "Unset the price of disabled products in the cart" default rule does, so you can refer to it for an example. Unsetting the price just involves setting the amount to NULL (i.e. no value, not 0).

http://drupal.org/node/1267156#comment-4937288

Answer 2

Another way of doing this is to follow RFay's great video on using a component and looping. This method can be combined with Commerce Rules Extra to build a lot of complex business workflows for your cart.