Tuesday 8 November 2016

How to set validation on checkout with minimum qty purchase magento



How to set validation on checkout with minimum qty magento

Put below code in your module/any module config.xml file after <models> block
<global>
    <events>
        <controller_action_predispatch_checkout_onepage_index>
            <observers>
                <spirit_cms_validate_checkout>
                    <class>Setblue_Banner_Model_Observer</class>
                    <method>validateCheckout</method>
                </spirit_cms_validate_checkout>
            </observers>
        </controller_action_predispatch_checkout_onepage_index>
    </events>
</global>

Next we need to create observer file to read this code. Create Observer.php in /yourmodule/Model/Observer.php and put the below code :

public function validateCheckout($observer)
{
    // Ensure we only observe once. $oObserver
    if( Mage::registry( 'restrict_checkout_flag' ) )
    {
        return $this;
    }
    else
    {
        $oQuote = Mage::getSingleton( 'checkout/cart' )->getQuote();
        $oCartItems = $oQuote->getAllItems();
        $iTotalAmount = $oQuote->getGrandTotal();
        $iGroupId = $oQuote->getCustomerGroupId();
        $iTotalQty = 0;
        foreach( $oCartItems as $oCartItem )
        {
            $iTotalQty = $iTotalQty + $oCartItem->getQty();
        }
        if($iGroupId == '2'){
            if( $iTotalQty < 15 )
            {
                $oSession = Mage::getSingleton( 'checkout/session' );
                $oSession->addError( 'Please add at least 15 items to your cart.' );
                Mage::app()->getResponse()->setRedirect( Mage::getUrl( 'checkout/cart' ) );
            }
            Mage::register( 'restrict_checkout_flag', 1, TRUE );
        }
     
    }
}

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