Yii2 - left join on multiple condition

I believe this one is better solution. Instead of using Raw queries like leftJoin you should complement your joinWith relations with andOnCondition (which adds needed where conditions into your join statement).

$products = Product::find()
    ->joinWith(['metaData' => function (ActiveQuery $query) {
        return $query
            ->andWhere(['=', 'meta_data.published_state', 1]);
    }])
    ->joinWith(['availability' => function (ActiveQuery $query) {
        return $query
            ->andOnCondition(['>=', 'availability.start', strtotime('+7 days')])
            ->andWhere(['IS', 'availability.ID', NULL]);
    }])
    ->all();

In addition it looks cleaner when you write where clauses inside relations. It works the same as writing it outside (if I'm not wrong), but when refactoring your query, you can easily delete the whole relation without forgetting relation conditions outside.

Just use like below condition.

$query = Product::find()
 -> leftJoin('availability', 'availability.productID=product.ID  AND a.start>=DATE_ADD(DATE(now()), INTERVAL 7 DAY)')
 ->leftJoin('meta_data', 'meta_data.ID=product.meta_dataID')
 ->where(['is', 'availability.ID', NULL])
 ->andWhere(['=', 'meta_data.published_state', 1])
 ->all();