Question

我需要计算评论的平均评分，并将该值作为评级星放在其他页面上。例如。如果平均评级值是“3星”。我想将该值打印为“3星图像”，并将该图像放在另一页上。我在很多网站上问过这个问题，但没有得到任何答案。请帮帮我一个人

这是网址

http://www.smashingmagazine.com/2012/05/08/adding-custom-fields-in-wordpress-comment-form/

$plugin_url_path = WP_PLUGIN_URL;

if( $commenttitle = get_comment_meta( get_comment_ID(), 'title', true ) ) {
    $commenttitle = '<strong>' . esc_attr( $commenttitle ) . '</strong><br/>';
    $text = $commenttitle . $text;
} 

if( $commentrating = get_comment_meta( get_comment_ID(), 'rating', true ) ) {
    $commentrating = '<p class="comment-rating">    <img src="'. $plugin_url_path .
    '/ExtendComment/images/'. $commentrating . 'star.gif"/><br/>Rating: <strong>'. $commentrating .' / 5</strong></p>';
    $text = $text . $commentrating;
    return $text;       
} else {
    return $text;       
}

}

Answer 1

我找到了一个解决方案，给出了平均评分。请在extendcomment.php中添加以下函数

function average_rating() {
global $wpdb;
$post_id = get_the_ID();
$ratings = $wpdb->get_results("

    SELECT $wpdb->commentmeta.meta_value
    FROM $wpdb->commentmeta
    INNER JOIN $wpdb->comments on $wpdb->comments.comment_id=$wpdb->commentmeta.comment_id
    WHERE $wpdb->commentmeta.meta_key='rating' 
    AND $wpdb->comments.comment_post_id=$post_id 
    AND $wpdb->comments.comment_approved =1

    ");
$counter = 0;
$average_rating = 0;    
if ($ratings) {
    foreach ($ratings as $rating) {
        $average_rating = $average_rating + $rating->meta_value;
        $counter++;
    } 
    //round the average to the nearast 1/2 point
    return (round(($average_rating/$counter)*2,0)/2);  
} else {
    //no ratings
    return 'no rating';
}

}

用＆＃34;＆＃34;调用该功能这将给出数值平均值。要将平均值显示为图像，请参阅＆＃34;函数modify_comment（$ text）＆＃34;。

如何从扩展注释WordPress插件计算平均评级？

1 个答案: