Yii2:如何缓存ActiveRecord关系产生的查询

Question

我有新闻表及其相关的news_comment表.我已经使用news_comment表定义了关系newsComment.

如果我执行此查询:

$result = News::getDb()->cache(function () use($id) {
    return News::find()->with('newsComment')->where(['news.id' => $id])->one();
});

只缓存从新闻表中获取数据的查询.从相关表中选择的查询不是.

是否可以缓存执行的主查询和查询以从相关表中检索数据,而无需单独编写它们？

Answer 1

尝试这个：

$db = News::getDb();
$result = $db->cache(function ($db) use ($id) {
  $query = new \yii\db\Query;
  $query->select("news.*,newsComment.*") // write table name for newsComment model and also in join
        ->from('news')
        ->leftjoin('newsComment','newsComment.id=news.product_id')
        ->where(['news.id' => $id])
        ->one();

  $command = $query->createCommand();
  $result  = $command->queryAll();

  return $result;

});