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{/if}
6. Create the presentation/reviews.php file, and add the following in it:
// Class that handles product reviews
CHAPTER 21 ?–  PRODUCT REVIEWS 660
class Reviews
{
public $mProductId;
public $mReviews;
public $mTotalReviews;
public $mReviewerName;
public $mEnableAddProductReviewForm = false;
public $mLinkToProduct;
public function __construct()
{
if (isset ($_GET['ProductId']))
$this->mProductId = (int)$_GET['ProductId'];
else
trigger_error('ProductId not set', E_USER_ERROR);
$this->mLinkToProduct = Link::ToProduct($this->mProductId);
}
public function init()
{
// If visitor is logged in ...
if (Customer::IsAuthenticated())
{
// Check if visitor is adding a review
if (isset($_POST['AddProductReview']))
Catalog::CreateProductReview(Customer::GetCurrentCustomerId(),
$this->mProductId, $_POST['review'],
$_POST['rating']);
// Display "add review" form because visitor is registered
$this->mEnableAddProductReviewForm = true;
// Get visitor's (reviewer's) name
$customer_data = Customer::Get();
$this->mReviewerName = $customer_data['name'];
}
// Get reviews for this product
$this->mReviews = Catalog::GetProductReviews($this->mProductId);
// Get the number of the reviews
$this->mTotalReviews = count($this->mReviews);
}
}
?>
CHAPTER 21 ?–  PRODUCT REVIEWS 661
7. Open presentation/templates/product.tpl, and add the following line at the end of it:
{include file="reviews.


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