我怎样才能在Smarty模板中加入这样的东西？

Question

I am trying to convert a pre-existing site that had html and php intermingled into a Smarty template based site. I never used Smarty before so this is proving very difficult for me. I get that you can assign a variable like so:

$smarty->assign('number_of_items_in_cart', $number_of_items_in_cart);

and use it in the tpl file like so:

{$number_of_items_in_cart}

but what about more complex things like this block of code that I had on the old site:

$query = mysql_query(" SELECT * FROM products WHERE id = '$pid' ");

if (mysql_num_rows($query) == 1) {

    while ($row = mysql_fetch_array($query)) {
        extract($row);
        echo "<h2>$name</h2>";
        echo "<img src='images/product_images/$image' alt='' width='100' />";
        echo $description;
        echo '<p>'.money($price).'</p>';
        echo "<input type='text' value='1' class='qty-$id' />";
        echo "<a href='javascript:void(0)' onClick=\"add_cart('$id')\">Add to Cart</a>";
    }

} else {
    redirect('404.php');
}

How can I work with this in a Smarty template, since the output is within a while loop?

Answer 1

Instead of echoing this, you can append it in a string variable then pass it to smarty:

$string = "";
while ($row = mysql_fetch_array($query)) {
        extract($row);
        $string .= "<h2>$name</h2>";
        $string .=  "<img src='images/product_images/$image' alt='' width='100' />";
        $string .=  $description;
        $string .=  '<p>'.money($price).'</p>';
        $string .=  "<input type='text' value='1' class='qty-$id' />";
        $string .=  "<a href='javascript:void(0)' onClick=\"add_cart('$id')\">Add to Cart</a>";
    }

Now u can pass it to smarty

$smarty->assign('place_holder', $string);

I hope this is what you are looking for