Hide completed orders from sales/orders

Question

In sales/orders is it possible to hide completed orders ? using something like filters.

or can I filter the status column with more than one status ?

Answer 1

The observer way:

<events>
    <sales_order_grid_collection_load_before>
        <observers>
            <vendor_module_salesgrid>
                <model>module/observer</model>
                <method>filterGrid</method>
            </vendor_module_salesgrid>
        </observers>
    </sales_order_grid_collection_load_before>
</events>

Then in your module/Model/Observer.php

<?php

class Vendor_Module_Model_Observer 
{
    public function filterGrid(Varien_Event_Observer $observer)
    {
        $collection = $observer->getOrderGridCollection();
        $collection->addFieldToFilter('status',array('neq', 'complete'));
    }
}

Answer 2

Magento sales order grid collection generate from Mage_Adminhtml_Block_Sales_Order_Grid at class _prepareCollection function.

you need to modify the collection from here.

So you need to override that class

<?php
class [ModuleNameSpace_ModuleName]_Block_Adminhtml_Sales_Order_Grid extends Mage_Adminhtml_Block_Sales_Order_Grid
{ 
  protected function _prepareCollection()
    {
        $collection = Mage::getResourceModel($this->_getCollectionClass());
            // filter ty status 
        $collection ->addFieldToFilter('status',array('neq', 'complete'));
        $this->setCollection($collection);
        return parent::_prepareCollection();
    } 
}