Magento Customer Grid – Display Last Order Date in Magento 1.9

customercustomer-gridmagento-1.9

I'm trying to add some extra columns into Magento's customer grid.
I've got an order count working successfully (Total amount of orders a customer has placed)

I'm trying to get the Last Order date in, but I'm unable to get it working.
Has anyone done this before or can someone point me in the right direction as to how to do this?

This is my current code, but it errors and just displays a SQL query.

    $orderTableName = Mage::getSingleton('core/resource')
        ->getTableName('sales/order');
    $collection->getSelect()
        ->joinLeft(
            array('orders' => $orderTableName),
            'orders.customer_id=e.entity_id',
            array(
                'order_count' => 'COUNT(customer_id)',
                'last_order' => 'MAX(created_at)'
            )
        );
    $collection->groupByAttribute('entity_id');

Best Answer

Here is working example for CE 1.8.1:

protected function _prepareCollection()
{
    $collection = Mage::getResourceModel('customer/customer_collection')
        ->addNameToSelect()
        ->addAttributeToSelect('email')
        ->addAttributeToSelect('created_at')
        ->addAttributeToSelect('group_id')
        ->joinAttribute('billing_postcode', 'customer_address/postcode', 'default_billing', null, 'left')
        ->joinAttribute('billing_city', 'customer_address/city', 'default_billing', null, 'left')
        ->joinAttribute('billing_telephone', 'customer_address/telephone', 'default_billing', null, 'left')
        ->joinAttribute('billing_region', 'customer_address/region', 'default_billing', null, 'left')
        ->joinAttribute('billing_country_id', 'customer_address/country_id', 'default_billing', null, 'left');



    // add 2 new fields as sub queries      
    $sql ='SELECT MAX(o.created_at)'
        . ' FROM ' . Mage::getSingleton('core/resource')->getTableName('sales/order') . ' AS o'
        . ' WHERE o.customer_id = e.entity_id ';
    $expr = new Zend_Db_Expr('(' . $sql . ')'); 

    $collection->getSelect()->from(null, array('last_order_date'=>$expr));

    $sql ='SELECT COUNT(*)'
        . ' FROM ' . Mage::getSingleton('core/resource')->getTableName('sales/order') . ' AS o'
        . ' WHERE o.customer_id = e.entity_id ';
    $expr = new Zend_Db_Expr('(' . $sql . ')'); 

    $collection->getSelect()->from(null, array('orders_count'=>$expr));

    //echo $collection->getSelect(); exit;      

    $this->setCollection($collection);

    return parent::_prepareCollection();
}

and 

protected function _prepareColumns()
{
    $this->addColumn('entity_id', array(
        'header'    => Mage::helper('customer')->__('ID'),
        'width'     => '50px',
        'index'     => 'entity_id',
        'type'  => 'number',
    ));

    $this->addColumn('last_order_date', array(
        'header'    => Mage::helper('customer')->__('Last Order Date'),
        'type'      => 'datetime',
        'align'     => 'center',
        'index'     => 'last_order_date',
        'gmtoffset' => true,        
    ));

    $this->addColumn('orders_count', array(
        'header'    => Mage::helper('customer')->__('Orders Count'),
        'index'     => 'orders_count',
    ));

    ........
    ........

The output is

orders

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