function commerce_stock_option_validate in Commerce Stock 7

Form validate handler: validate the product and quantity to add to the cart.

1 string reference to 'commerce_stock_option_validate'

commerce_stock_form_alter in ./commerce_stock.module

Implements hook_form_alter().

File

./commerce_stock.module, line 285

Allow commerce products to have stock levels associated with their SKU

Code

function commerce_stock_option_validate($element, &$form_state) {

  // validate the stock level
  // @todo we really dont need to cycle and load all the products
  // only $form_state['values']['product_id']
  $options = $element['#options'];
  foreach ($options as $key => $value) {
    $product = commerce_product_load($key);
    $product_wrapper = entity_metadata_wrapper('commerce_product', $product);
    if (isset($product_wrapper->commerce_stock)) {

      // if stock override set stock to be the same as quantity so will validate
      if (isset($product_wrapper->commerce_stock_override) && $product_wrapper->commerce_stock_override
        ->value() == 1) {
        $element['#stock'][$key] = $form_state['values']['quantity'];
        continue;
      }
    }
  }
  $stock = $element['#stock'][$form_state['values']['product_id']];
  $stock_enabled = $element['#stock_enabled'][$form_state['values']['product_id']];
  if ($stock < 1 && $stock_enabled) {
    form_error($element, t('Product is out of stock'));
  }
  elseif ($stock_enabled) {
    $product_id = $form_state['values']['product_id'];
    $qty = $form_state['values']['quantity'];
    $qty_ordered = commerce_stock_check_cart_product_level($product_id);
    if ($qty + $qty_ordered > $stock) {
      form_error($element, t("You can only order a maximum of @stock for this item.", array(
        '@stock' => $stock,
      )));
    }
  }
}