Error in checkout/onepage after Magento patch 6788

Question

I am a newbie in the Magento programming and I have the following problem:

When I applied the Magento Patch 6788 I can't reach the www.siteurl.com/checkout/onepage/ anymore.

I think it has something to do with the following:

<?php

class MW_Ddate_Model_Ddate extends Mage_Core_Model_Abstract
{
  private $inexedDdates = null;

public function _construct()
{
    parent::_construct();
    $this->_init('ddate/ddate');
}

public function getNumberOrderFromNow() {
    if(is_null($this->inexedDdates)) {
        $timeFilter = strtotime('- 1 day');
        $collection = $this->getCollection()
            ->addFieldToFilter('UNIX_TIMESTAMP(ddate)', array('gteq' => $timeFilter));
        $ddateArray = array();
        foreach ($collection as $ddate) {
            $ddateArray[$ddate->getDtime()][$ddate->getDdate()] = $ddate;
        }

       $this->inexedDdates = $ddateArray;
    }

    return $this->inexedDdates;
 }
}
?>

In the logfile there was something said about ->addFieldToFilter('UNIX_TIMESTAMP(ddate)'

I think the UNIX_TIMESTAMP is deprecated when I did the patch.

Does anyone knows how I can solve this problem?

EDIT: The plugin which I use on the onepage is the Delivery Date from MageWorld

Answer 1

Contact MageWorld and ask them? If they don't support it anymore; test the module with SUPEE-6788 developer toolbox . The toolbox can also fix compatibility issues with modules and the SUPEE-6788 patch. Also have a look at the technical details of the SUPEE-6788 patch at the "APPSEC-1063, addressing possible SQL injection" section.