I have a custom payment method I've implemented and it has a form that looks something like this:

<div class="form-list" id="payment_form_<?php echo $this->getMethodCode() ?>" style="display:none;">
        <label for="<?php echo $_code ?>_method_no"><?php echo $this->__('Method No') ?>*</label>
          <select id="<?php echo $_code ?>_method_no" name="payment[method_no]"
                  class="dropdown validate-select payment-type-select"
                  value="<?php echo $this->htmlEscape($this->getInfoData('method_no')) ?>">
              <option value=""><?php echo $this->__('--Please Select--') ?></option>
              <option title="<?php echo $this->__('Method One') ?>" value="1">Method One</option>
              <option title="<?php echo $this->__('Method Two') ?>" value="2">Method Two</option>
              <option title="<?php echo $this->__('Method Three') ?>" value="3">Method Three</option>
    <?php echo $this->getMethod()->getConfigData('message'); ?>

My question is, how do I validate this in my model validate function? I know that I have validation on the front end with the class validate-select but I would like to know how I can check the value in the validate function. I have something like this right now but it is not working:

class Name_Mypaymentmethod_Model_Standard extends Mage_Payment_Model_Method_Abstract {
    protected $_code = 'mypaymentmethod';

    protected $_isInitializeNeeded      = true;
    protected $_canUseInternal          = true;
    protected $_canUseForMultishipping  = false;

    protected $_formBlockType = 'mypaymentmethod/form';
    protected $_infoBlockType = 'mypaymentmethod/info';

    public function getOrderPlaceRedirectUrl() {
        return Mage::getUrl('mypaymentmethod/payment/redirect', array('_secure' => true));

    public function assignData($data) {
        $info = $this->getInfoInstance();

        if ($data->getMethodNo())

        return $this;

    public function validate() {
        $info = $this->getInfoInstance();

        if (!$info->getMethodNo())
          $errorCode = 'invalid_data';
          $errorMsg = $this->_getHelper()->__("Please select a method.\n");

        if ($errorMsg) 

        return $this;


It seems like the $info->getMethodNo() function is not working for my select dropdown. How do I get the value? I've been looking through forums, tutorials, posts for the last couple hours and can't find anything that shows validating a select dropdown like this.

Any help would be appreciated! Thanks

  • Can you please update the answer and add the full code of the class where the validate() method is declared? Apr 22, 2016 at 17:34
  • @SiarheyUchukhlebau updated the question Apr 22, 2016 at 17:40

1 Answer 1


If you are using the Magento regular one page checkout:

  1. Your form comes to the Mage_Checkout_OnepageController::savePaymentAction() method.
  2. Then data are transferred to model:

    $data = $this->getRequest()->getPost('payment', array());
    $result = $this->getOnepage()->savePayment($data);

    If you don't see your data at this stage, look for a problem on frontend (form submit).

  3. Then your data are transferred to your payment method in the Mage_Checkout_Model_Type_Onepage::savePayment():

    $payment = $quote->getPayment();
  4. Validation happens in the importData() method (Mage_Sales_Model_Quote_Payment::importData()):

     * Import data array to payment method object,
     * Method calls quote totals collect because payment method availability
     * can be related to quote totals
     * @param   array $data
     * @throws  Mage_Core_Exception
     * @return  Mage_Sales_Model_Quote_Payment
    public function importData(array $data)
        $data = new Varien_Object($data);
            $this->_eventPrefix . '_import_data_before',
        $method = $this->getMethodInstance();
         * Payment availability related with quote totals.
         * We have to recollect quote totals before checking
        if (!$method->isAvailable($this->getQuote())
            || !$method->isApplicableToQuote($this->getQuote(), $data->getChecks())
        ) {
            Mage::throwException(Mage::helper('sales')->__('The requested Payment Method is not available.'));
        * validating the payment data
        return $this;

    If on this step data exist at the beginning, but are absent at the end, that possibly a problem in one of observers ($this->_eventPrefix . '_import_data_before').

You need to check your data on each of these steps.
I hope this information will be useful for you.

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