"Fatal error: Call to a member function getSummaryHtml() on a non-object in Abstract.php on line 319"

Question

Fatal error: Call to a member function getSummaryHtml() on a non-object in /usr/local/apache2/htdocs/app/code/core/Mage/Catalog/Block/Product/Abstract.php on line 319

/**
 * Get product reviews summary
 *
 * @param Mage_Catalog_Model_Product $product
 * @param bool $templateType
 * @param bool $displayIfNoReviews
 * @return string
 */
public function getReviewsSummaryHtml(Mage_Catalog_Model_Product $product, $templateType = false, $displayIfNoReviews = false)
{
 if ($this->_initReviewsHelperBlock()) {
 return $this->_reviewsHelperBlock->getSummaryHtml($product, $templateType, $displayIfNoReviews);
 }
 return '';
}

Answer 1

$this->_reviewsHelperBlock should be initiated with Mage_Review_Block_Helper Please check in this file

protected function _initReviewsHelperBlock()
{
 if (!$this->_reviewsHelperBlock) {
 if (!Mage::helper('catalog')->isModuleEnabled('Mage_Review')) {
 return false;
 } else {
 $this->_reviewsHelperBlock = $this->getLayout()->createBlock('review/helper');
 }
 }
 return true;
}