Joomla 评级，而不是显示 % 我希望它查看“8.2/10”？

Question

我正在使用组件 K2，它是投票/评级系统。目前它以百分比形式显示评分，并带有一些 CSS 来查看星星。但我不想显示星星，而是希望它说，例如，4.5/5

查看代码如下：

<?php if($this->item->params->get('catItemRating')): ?>
<div id="catItemRatingBlock">
 <div class="itemRatingForm">
   <ul class="itemRatingList">
     <li class="itemCurrentRating" id="itemCurrentRating<?php echo $this->item->id; ?>" style="width:<?php echo $this->item->votingPercentage; ?>%;"></li>
     <li><a href="#" rel="<?php echo $this->item->id;  ?>" class="one-star">1</a></li>
     <li><a href="#" rel="<?php echo $this->item->id;  ?>" class="two-stars">2</a></li>
     <li><a href="#" rel="<?php echo $this->item->id;  ?>" class="three-stars">3</a></li>
     <li><a href="#" rel="<?php echo $this->item->id;  ?>" class="four-stars">4</a></li>
     <li><a href="#" rel="<?php echo $this->item->id;  ?>" class="five-stars">5</a></li>
   </ul>
 </div>
</div>
<?php endif; ?>

这是在 'com_k2/models/item.php' 中找到的代码：

function getVotesPercentage($itemID = NULL)
{

    $mainframe = &JFactory::getApplication();
    $user = JFactory::getUser();
    $db = &JFactory::getDBO();
    $xhr = false;
    $result = 0;
    if (is_null($itemID))
    {

        $itemID = JRequest::getInt('itemID');
        $xhr = true;
    }

    $vote = K2ModelItem::getRating($itemID);

    if (!is_null($vote) && $vote->rating_count != 0)
    {
        $result = number_format(intval($vote->rating_sum) / intval($vote->rating_count), 2) * 20;
    }
    if ($xhr)
    {
        echo $result;
        $mainframe->close();
    }
    else
        return $result;
}

我该怎么办？

Answer 1

总而言之，取 $this->item->votingPercentage（0 到 100）中显示的百分比，然后除以 20 将其转换为 0 到 5 范围内的数字. 将数字显示为 5 中的 x 时，您可能希望保持 1 位小数的准确性。

由于您不知道votingPercentage 是字符串还是数字，我会在进行任何计算之前对其进行测试以确保它具有有效的数值：

<?php

if (!isnumeric($this->item->votingPercentage) {

   $numericRating = 0;

// If the value cannot be interpreted as a numeric, we assume a value of 0.

}

else {

   $numericRating = round(($this->item->votingPercentage / 2), 0);  

// The statement above is equivalent to dividing the percentage by 20 (to get a number from 0 to 5); and then multiplying by 10 to get a number from 0 to 50.  Since this final number could have a decimal component (for example 42.55 out of 50), we round to 0 decimal places to get rid of the decimal remainder - in this example, resulting in the number 43

   $numericRating = round(($numericRating / 10), 1);

// The statement above divides the number from the previous step by 10 (to shift the decimal point), and just for good measure, applies the rounding function one more time in case the division yields a number like 4.300000001 or 4.29999999

}

echo $numericRating . "/5";

// Finally, the resulting numeric value is rendered as a number from 0 to 5 with 1 decimal place, followed by the characters "/5"  (i.e. out of 5)
?>