I've set up my own custom module structure, and am trying to implement commerce_cart_order_product_line_item_delete. At it's most basic level, i'm trying to delete line item 70 from order 1 in my cart with the following code in my module:


I'm getting this error on the page:

Fatal error: Call to undefined function commerce_entity_reference_delete() in /Users/[username]/Documents/Sites/[site_name]/profiles/commerce_kickstart/modules/contrib/commerce/modules/cart/commerce_cart.module on line 1268

I've tried other methods, like the code on this page:


but i can't seem figure out how to find a product's ID, and in the end, I want to delete a line item from a cart which could potentially have two entries of the same product. don't want to delete the whole product from the cart... hope that makes sense.

What am I missing? thanks!

1 Answer 1


The function accepts the $commerce_order object not just the order_id. You could try

commerce_cart_order_product_line_item_delete($order, 70);

commerce_entity_reference_delete is defined in commerce.module so it should be available, if commerce is enabled and at current version.

  • thanks. tried that and got the same error. I'm using Drupal Commerce so I assume that all necessary functions are being fired... i've dug into commerce.module, and sure enough, the function is there. Any reason why my build is not seeing it?
    – sakeferret
    Feb 14, 2014 at 1:56
  • Verify the commerce module is enabled, and therefore included in the request - presumably it must be. Feb 14, 2014 at 1:57
  • checked, and definitely is. commerce.module is THE core component of the whole setup. not sure why that function is not being found?
    – sakeferret
    Feb 14, 2014 at 2:33

Not the answer you're looking for? Browse other questions tagged or ask your own question.