mysql - Dispaly records from database in magento -


i using code in grid.php display records single tabel 'paypal_payment_transaction':

protected function _preparecollection()     {  $db = mage::getsingleton('core/resource')->getconnection('core_write');  $query = "select transaction_id,txn_id,additional_information,created_at,user_id,reference_txn `paypal_payment_transaction` limit 0 , 30";  $result = $db->query($query);  // count of affected rows $affected_rows = $result->rowcount(); $orders = $result->fetchall($sql); foreach($orders $order) { echo "<pre>"; print_r($order); }  }

i need query in magento way: may this

protected function _preparecollection()     {        $collection = mage::getresourcemodel('sales/order_collection')            query select record tabel 'paypal_payment_transaction'         ;          $this->setcollection($collection);         parent::_preparecollection();         return $this;     }

so can display in grid accordingly i.e. in :

protected function _preparecolumns()     {         -------------------   ------------------  }

try - 

protected function _preparecollection() {       $collection = mage::getmodel('paypal/payment_transaction')->getcollection();       $this->setcollection($collection);       parent::_preparecollection();       return $this; }

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