yii2 ActiveRecord 使用计算查找 OrderBy

问题描述

试图从我的数据库中获取描述.查询返回结果，但我想将结果排序为只显示投票最高的那个.

Trying to fetch a description from my database. The query returns the result but I would like to order the result to only show the one with the highest vote.

投票应该由upvoted列减去downvoted列

$description = UnitDescription::find()
   ->where(['id_unit' => $model->id])
   ->orderBy([
      'upvoted - downvoted' => SORT_DESC //Need this line to be fixed
   ])
   ->one();

我希望有人可以编写查询的这一部分 - 谢谢

I was hoping someone might have a way to write this part of the query - Thanks

推荐答案

你应该简单地尝试:

$description = UnitDescription::find()
    ->where(['id_unit' => $model->id])
    ->orderBy(['(upvoted - downvoted)' => SORT_DESC])
    ->one();

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