Magento - how to hook into order reorder -

when customer reorders need include reference original order id on new order. can see how add attribute in sales_flat_order , sales_flat_quote (i think!), can't see how hook reorder.

the reorder quite simple , done in app\code\core\mage\sales\controller\abstract.php->reorderaction. copies order items cart , opens cart. how can hook add orderid crossreference?

i can copy local , edit (correct?) that's not smart way of doing because i've taken done in abstract.php , made local copy of it.

i guess create custom module reorder , point "reorder" link custom module. again, that's bit hacky , i'd prefer hook process if possible.

thanks.

you can hook controller_action_predispatch_sales_order_reorder event , order id parameter on observer

$oldorderid=mage::app()->getrequest()->getparam('order_id'); 

create new column quote , order table on sql installer

$installer = new mage_sales_model_resource_setup('core_setup'); $options = array( 'type' => varien_db_ddl_table::type_integer, ); $installer->addattribute('quote', 'old_order_id', $options); $installer->addattribute('order', 'old_order_id', $options); $installer->endsetup(); 

then save parameter order_id quote object on observer

mage::getsingleton('checkout/session')->getquote()->setoldorderid($oldorderid)->save(); 

and create fieldset on config.xml transfer value of attribute order object

<global>      <fieldsets>         <sales_convert_quote>             <old_order_id>                 <to_order>*</to_order>             </old_order_id>     </fieldsets> </global> 

there might experimentation involved, idea.