function commerce_sagepay_refund_form_validate in Drupal Commerce SagePay Integration 7

Validate handler: ensure a valid amount is given.

File

includes/commerce_sagepay_refund.inc, line 72

Code

function commerce_sagepay_refund_form_validate($form, &$form_state) {
  $transaction = $form_state['transaction'];
  $amount = $form_state['values']['amount'];

  // Ensure a positive numeric amount has been entered for capture.
  if (!is_numeric($amount) || $amount <= 0) {
    form_set_error('amount', t('You must specify a positive numeric amount to refund.'));
  }

  // Ensure the amount is less than or equal to the transaction amount.
  if ($amount > commerce_currency_amount_to_decimal($transaction->amount, $transaction->currency_code)) {
    form_set_error('amount', t('You cannot refund more than you collected through SagePay.'));
  }
}