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I would like to add some products to my cart while I am on checkout process. The cart appears to be empty at the time. I want to make a selection of some add-on products on the checkout process.

I created my own custom checkout pane(it's a form). Also a submit function.

There are "commerce_line_items" in the order object, but then I get an error that says my entity is missing bundle. There is also 'commerce_order_total' that includes the totals? so I can't just edit the object/array?

This is how I create my line item:

$line_item = commerce_product_line_item_new($product, 1, $order->order_id);

This is how I am trying to add it to my order:

$order->commerce_line_items['und'][] = array('line_item_id' => $line_item->line_item_id);
  • You should never hard-code 'und' into your code like that. Please use the Drupal constant LANGUAGE_NONE instead! – Chris Cohen May 22 '12 at 15:52
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You likely need to save the line item before adding it to the order. The order total should be recomputed for you automatically on save.

  • Thank you, I thought of it before. Don't know why I didn't try to do this, cause nodes in Drupal behave like this. The function is really obvious: commerce_line_item_save($line_item); – ram4nd May 23 '12 at 6:54

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