magento根据产品评级计算类别的平均评级

Question

我需要在类别上显示评分。

我正在考虑从类别中的产品中获得该等级并进行平均。

似乎“很重”，可能会降低网站速度。

还有其他办法吗？

Answer 1

我最近解决了这个问题。在我给你代码后，我先解释一下：）。

1。存储

事实上，第一个问题是优化。我解决的问题是，我将评级存储在数据库中，并使用cron job.its尚未在线，但它会每晚运行。

2。计算

首先，我采用了所有子类别（我不需要根类别，但如果你这样做，你会从代码中找出如何获得它们） - ＆gt;我检查了所有类别的产品，检查每个产品的评级 - ＆gt;将百分比添加到数组 - ＆gt;计算平均值 - ＆gt;写/更新（取决于是否有）评论（以编程方式） - ＆gt;添加/更新评级到评论（以编程方式） - ＆gt;重复所有类别。

3。守则

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();
}

4。摘要

当然，我自己并没有做到这一切。 如果您有任何问题，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＆quot; rating_option_vote＆＃39;和＆＃39; review_detail＆＃39;