[jp@ewaycorp.com]

I have figured out how to do it on my own.

PHP Code:

protected function getVariantsInfo() 
    {

        $product = $this->getProduct();
        //echo $id = $product->getProductId();
        
        $variants = $product->getVariants(); 

        foreach ($variants as $variant) {
            $v_info=array();
            $v_info['quantity']=(($variant->defaultAmount) ? $product->getQty() : $variant->amount);
            $v_info['price']=(($variant->defaultPrice) ? $product->price : $variant->price);
            $v_info['sku']=(($variant->sku) ? $product->sku : $variant->sku);
            $v_info['product_id'] = $product->getProductId();
            $v_info['category_id'] = $product->getCategoryId();
            $v_info['attr_group_id'] = "62"; // Your select box ID
            foreach($variant->getAttributeValues() as $attribute)
            {
                $v_info['media_type']= trim($attribute->getAttributeOption()->getName());
                $v_info['attribute_id'] = $attribute->getId();
            }
            $variant_info[]=$v_info;
        }
        return $variant_info; 
    } 


In Template File

	{foreach:getVariantsInfo(),a}
	<li> 
	<span class="icon"><img src="images/cd-icon.png" alt="cd-icon"></span>
	<span class="details-with-sku">{product.name:h} ({a.media_type})<br/><p>SKU: {a.sku}</p></span>
	<span class="buy-now"> ${a.price}<br/>
	<form action="{buildURL(#cart#)}" method="post" accept-charset="utf-8">
		<div class="form-params" style="display: none;">
			<input type="hidden" name="target" value="cart">
			<input type="hidden" name="action" value="add">
			<input type="hidden" name="product_id" value="{a.product_id}">
			<input type="hidden" name="category_id" value="{a.category_id}">
			<input type="hidden" name="attribute_values[{a.attr_group_id}]" value="{a.attribute_id}">
			<input type="hidden" name="amount" value="1">
			<input type="hidden" name="returnURL" value="{product.cleanURL}">
		</div>
		<input class="add_to_cart_mediatype" type="submit" value="" />
	</form>
	
	</span>
	<div class="clearfix"></div> 
	</li>
	{end:}

Now you can have a list of variant with buy now button and clicking on it will add the specific variant to your cart.

I hope this would help someone who is trying to figure out this kind of requirement.

Also print_r is done like this

echo "<pre>";
\Doctrine\Common\Util\Debug::dump($entity);
echo "</pre>";