Issue with product_cart_form($node);

Hi - I wanted to have the add to cart form on my catalog pages, so added product_cart_form($node) to the teaser view for my products. Seems like a general FAPI issue with the Value form type (or docs) - in the form function $form['nid'] is set as type value with a value of the $node->nid.

If i added items to the cart lower down the page, the very first item on the page would be added to the cart each time.

I traced this, and found if I set the form['nid'] (line 1287) to be:

  $form['nid'] = array(
    '#type' => 'hidden',
    '#default_value' => $node->nid,
  );

It will then pass correct $node->nid values to the cart and the correct products were added. #default_value isn't listed as an available parameter in the docs - but it fixed this issue.

To replicate:
1) Setup a catalog page that displays teasers (I'm using views for this)
2) Add this to the node teaser view of a catalog page. print drupal_get_form('product_cart_form', $node);
3) Add the cart view block (how I first saw it...)
4) Add products lower down the catalog page, only the first item on the page will be added to the cart.

This form is usually used on a single product page, so was catching the first value.
-Greg