/**
  * Redeclare before load method for adding event
  *
  * @return MatheusGontijo_EasyShippingRules_Model_Resource_Custommethod_Collection
  */
 protected function _beforeLoad()
 {
     parent::_beforeLoad();
     $this->getSelect()->joinLeft(array('c' => $this->getResource()->getTable('easyshippingrules/carrier')), 'main_table.easyshippingrules_carrier_id = c.easyshippingrules_carrier_id', array('name AS carrier_name'));
     return $this;
 }