How to remove the .00 decimal from the shopping cart & Invoice of magento store?

Question

I am building an ecommerce website named bookslab.in.

I want to remove the .00 decimals from the all products prices that i am adding in the shopping cart & in Invoice generated.

I am using the ET currency manager, it removes the prices decimals of all the products except the shopping cat products & Invoice

Is there any way to remove the decimals from the shopping cart products & from Invoices & to convert the main price without decimals. I want my grand total without the decimals.

My store currency in **Indian Rupees.

I am attaching the screenshot. Do i require any changes.

Answer 1

In order to change price precision in magento you would need to overwrite some core files.

In the example below we are changing precision to 0.

1) Overwrite lib/Zend/Currency.php and change precision around line:

 protected $_options = array(
     'position'  => self::STANDARD,
     'script'    => null,
     'format'    => null,
     'display'   => self::NO_SYMBOL,
     'precision' => 0,    /*CHANGE*/
     'name'      => null,
     'currency'  => null,
     'symbol'    => null,
     'locale'    => null,
     'value'     => 0,
     'service'   => null,
     'tag'       => 'Zend_Locale'
 );

2) overwrite app/code/core/Mage/Core/Model/Store.php and change roundPrice function:

public function roundPrice($price)
{    
    return round($price, 0);
}

3) overwrite app/code/core/Mage/Directory/Model/Currency.php and change format function:

public function format($price,$options=array(),$includeContainer = true,$addBrackets = false)
{   
  return $this->formatPrecision( $price,0,$options,$includeContainer,$addBrackets);
}

4)\app\code\local\Mage\Sales\Model\Order.php line 1358:

public function formatPrice($price, $addBrackets = false)
{
    return $this->formatPricePrecision($price, 0, $addBrackets);
}