如何将列添加到可用于排序的 Yii2 查询生成器结果？

Question

我有一个 Yii2 查询对象，其中包含执行全文搜索的方法

public function search($search)
{
    return $this->andWhere('MATCH(title, description, tags) AGAINST(:search) AS value', ['search' => $search])
        ->orderBy('value');
}

整个代码看起来像

$dataProvider = new ActiveDataProvider([
    'query' => Video::find()->published()->search($search)
]);

当然这不起作用，因为 andWhere() 不允许 AS 值语句。有人可以告诉我如何解决这个问题吗？非常感谢。

Answer 1

如果你想使用“值”，那么你必须把它写在select语句中。您可以使用“having”子句对结果应用过滤器。

以下两种方法均可使用

1.

$query = Product::find()
    ->andWhere('MATCH ('.Product::tableName().'.name) AGAINST(:q)'
    ->params(['q' => $this->q])
    ->orderBy('(MATCH ('.Product::tableName().'.name) AGAINST(:q)) DESC');

2

$query = Product::find();
    ->select(Product::tableName().'.*, MATCH ('.Product::tableName().'.name) AGAINST(:q) as VL')
    ->having('VL > 5')
    ->params(['q' => $this->q]);

Answer 2

我想您可以将搜索部分包含在 select 子句中，以便对结果进行排序

Video::find()
     ->published()
     ->search($search)
     ->select(['*','MATCH(title, description, tags) AGAINST(:search) AS value'])
     ->orderBy('value');

但问题是绑定 :search 占位符的值（对此不确定），为此我想你可以使用 yii\db\Expression class which takes params as second argument and this expression can be used in select() 方法，所以现在查询构建器看起来像

Video::find()
     ->published()
     ->search($search)
     ->select(['*',
         new \yii\db\Expression('MATCH(title, description, tags) AGAINST(:search) AS value',['search' => $search])
     ])
     ->orderBy('value');

Soution 是参数方法：

$this->select(['*','MATCH(title, description, tags) AGAINST(:search) AS score'])
    ->andWhere('MATCH(title, description, tags) AGAINST(:search)', ['search' => $search])
    ->params(['search' => $search])
    ->orderBy(['score' => SORT_DESC]);

如何将列添加到可用于排序的 Yii2 查询生成器结果？

How to add column to Yii2 query builder result which could be used to order by?

php

sql

parameters

query-builder

yii2