I am getting this error on save method of a model.

Fatal error: Call to a member function beginTransaction() on a non-object in /home/public_html/app/code/core/Mage/Core/Model/Abstract.php on line 313

$warranty = Mage::getModel('warrany/warrantydata');

I have this added xml for model


i also have the collection and model file

class Website_Warranty_Model_Warrantydata extends Mage_Core_Model_Abstract{}

class Website_Warranty_Model_Mysql4_Warrantydata extends Mage_Core_Model_Mysql4_Abstract {}
  • Could you please add some more information? - What does your config.xml look like? - Did you create the class in the Model folder? Commented Sep 6, 2013 at 10:55
  • It seams obvious...$this->_getRsource() does not return an object
    – Marius
    Commented Sep 6, 2013 at 10:57

1 Answer 1


In your resource model Website_Warranty_Model_Mysql4_Warrantydata you need to add this method :

public function _construct(){
    $this->_init('warranty/warrantydata', 'entity_id'); //the second parameter must be the primary key in your warrantydata table. If it's not `entity_id` then change it

and in your model class Website_Warranty_Model_Warrantydata you need this method:

public function _construct(){

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