magento根据产品评级计算类别的平均评级

我需要显示类别的评级

我想从产品类别中获得评级，并得出平均值

这似乎是'沉重的'，它可能会减慢网站的速度

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还有其他方法吗？

我最近解决了这个问题。在我给你代码后，我将首先解释：

1.存储 事实上，第一个问题是优化。我如何解决这个问题的是，我使用cron作业将评级存储在数据库中。它还没有联机，但它将每晚运行

2.精明的 首先，我把所有的子类别，我不需要根类别，但如果你需要，你会从代码中找到如何获得它们->我检查了每个产品的所有类别产品的评级->将百分比添加到数组->计算平均值->写入/更新取决于是否有一个ReviewProgrammatically->将/更新评级添加到ReviewProgrammatically->重复所有类别

3.代码 4.总结 当然，这些都不是我一个人做的。 如果你有任何问题，请随时问我。 祝你好运

4.1. 数据库 您应该检查更改的表格是“评级、选项、投票”和“审查、详细信息”

include ('app/Mage.php');
Mage::app();
$_helper = Mage::helper('catalog/category');
$_categories = $_helper -> getStoreCategories();

$cateogory_ids = array();

if (count($_categories) > 0) :
    foreach ($_categories as $_category) :
        $_category = Mage::getModel('catalog/category') -> load($_category -> getId());
        $_subcategories = $_category -> getChildrenCategories();
        if (count($_subcategories) > 0) :
            foreach ($_subcategories as $_subcategory) :
                $cateogory_ids[] = $_subcategory; // get all the subcategories as objects
            endforeach;
        endif;
    endforeach;
endif;
$review_per_category = array();
$store_id = Mage::app() -> getStore() -> getId();


foreach ($cateogory_ids as $category) {

    $collection = $category -> getProductCollection();
    $collection -> addAttributeToSelect('*');
    foreach ($collection as $product) {
        $summaryData = Mage::getModel('review/review_summary') -> setStoreId($store_id) -> load($product -> getEntityId());
        $review_per_category[] = $summaryData['rating_summary']; // get the rating of all the products from this category
    }
    $review_per_category = array_filter($review_per_category);
    $count = count($review_per_category);    

    $sum = array_sum($review_per_category);
    $total = $sum / $count; 
    $review = Mage::getModel('review/review')->load($category -> getId(),'entity_pk_value');  // try to load the category review,if there is -> update else -> create
    $total_rating_option = round($total / 20); // rating percentage
    if(trim($review->getReviewId()) == ""){
    // create review and rating branch;
        echo $category -> getId().' review not found.Writing review<br/>';
        $_review = Mage::getModel('review/review')
            ->setEntityPkValue($category->getId())
            ->setStatusId(1)
            ->setTitle($category -> getName().' Category Review')
            ->setDetail($category -> getName().' Category Review')
            ->setEntityId(3)
            ->setStoreId($store_id)                
            ->setNickname('Auto')
            ->save();
        $rating_options = array(
            1 => array(1,2,3,4,5), 
            2 => array(6,7,8,9,10),
            3 => array(11,12,13,14,15),
            4 => array(16,17,18,19,20)    // we use custom rating options as 4.but the theory is the same. the 4th is kind of the sum of the first 3.    
        );


        foreach($rating_options as $rating_id => $option_ids){
            if($rating_id != 4)
                continue;
            try {
                if($_review -> getId() != ""){ 
                    $_rating = Mage::getModel('rating/rating')
                        ->setRatingId(4)
                        ->setReviewId($_review->getId())
                        ->setPercent($total) 
                        ->addOptionVote($option_ids[$total_rating_option-1],$category->getId());
                }
            } catch (Exception $e) {
                die($e->getMessage());
            }
        }
    }else{
         // update rating branch;
         $rating_options = array(
            1 => array(1,2,3,4,5), 
            2 => array(6,7,8,9,10),
            3 => array(11,12,13,14,15),
            4 => array(16,17,18,19,20)        
        );
            $percent = array(
                        16 => 1,
                        17 => 2,
                        18 => 3,
                        19 => 4,
                        20 => 5,
                            );
        $rating = Mage::getModel('rating/rating_option_vote') -> load($category->getId(),'entity_pk_value');
        foreach($rating_options as $rating_id => $option_ids):
            if($rating_id != 4)
                continue;
            try {                
                $rating -> setOptionId($option_ids[$total_rating_option-1],$category -> getId())
                        -> setPercent($total)
                        -> setValue($percent[$option_ids[$total_rating_option-1]])
                        -> save()
                        ;
                } catch (Exception $e) {
                    die($e->getMessage());
                }
        endforeach;
    }
    $review_per_category = array();
}