ActiveRecord where and order on via-table

Question

I have three database table:

product (id, name)

product_has_adv (product,advantage,sort,important)

advantage (id, text)

In ProductModel I def

Answer 1

As explained by @arogachev, the viaTable uses two separate queries, which renders any intermediate orderBy obsolete

You could replace the viaTable with an innerJoin as follows, in a similar solution to @MartinM

public function getAdvantages()
{
   return $this->hasMany(AdvantageModel::class, ['pha.product' => 'id'])
       ->innerJoin('product_has_advantage pha', 'pha.advantage = advantage.id')
       ->andWhere(['pha.important' => 1])
       ->orderBy(['pha.sort' => SORT_ASC]);
}

By adjusting the result of hasMany, you are adjusting the query for the target class - AdvantageModel::find(); product_has_advantage can be joined via the advantage identity

The second parameter of hasMany, link, can be viewed as [ query.column => $this->attribute ], which you can now support via the joined product_has_advantage and its product identity

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Note, when using viaTable, the link parameter can be viewed as if the intermediate query is complete and we are starting from there; [ query.column => viaTable.column ] hence ['id', 'advantage'] in your question

Answer 2

Using viaTable methods with relations will cause two separate queries, but if you don't need link() method you can use innerJoin in the following way to sort by product_has_advantage table:

public function getAdvantages()
{
    $query = AdvantageModel::find();
    $query->multiple = true;
    $query->innerJoin('product_has_advantage','product_has_advantage.advantage = advantage.id');
    $query->andWhere(['product_has_advantage.product' => $this->id, 'product_has_advantage.important' => 1]);
    $query->orderBy(['product_has_advantage.sort' => SORT_DESC]);
    return $query;
}

Note than $query->multiple = true allows you to use this method as Yii2 hasMany relation.