function commerce_cart_add_to_cart_form_validate in Commerce Core 7

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

1 string reference to 'commerce_cart_add_to_cart_form_validate'

commerce_cart_add_to_cart_form in modules/cart/commerce_cart.module

Builds an Add to Cart form for a set of products.

File

modules/cart/commerce_cart.module, line 2382

Implements the shopping cart system and add to cart features.

Code

function commerce_cart_add_to_cart_form_validate($form, &$form_state) {

  // Check to ensure the quantity is valid.
  if (!is_numeric($form_state['values']['quantity']) || $form_state['values']['quantity'] <= 0) {
    form_set_error('quantity', t('You must specify a valid quantity to add to the cart.'));
  }

  // If the custom data type attribute of the quantity element is integer,
  // ensure we only accept whole number values.
  if ($form['quantity']['#datatype'] == 'integer' && (int) $form_state['values']['quantity'] != $form_state['values']['quantity']) {
    form_set_error('quantity', t('You must specify a whole number for the quantity.'));
  }

  // If the attributes matching product selector was used, set the value of the
  // product_id field to match; this will be fixed on rebuild when the actual
  // default product will be selected based on the product selector value.
  if (!empty($form_state['values']['attributes']['product_select'])) {
    form_set_value($form['product_id'], $form_state['values']['attributes']['product_select'], $form_state);
  }

  // Validate any line item fields that may have been included on the form.
  field_attach_form_validate('commerce_line_item', $form_state['line_item'], $form['line_item_fields'], $form_state);
}