How to use JOIN in Yii2 Active Record for relational model?

Question

I have 2 tables called Books and Reviews. Books table has a one-to-many relationship with Reviews.

I want to search books and sort them by Reviews.

For exam

Answer 1

Use joinWith. For more see

For example, for your case code like that:

Books::find()
    ->joinWith(['reviews' => function ($q) {
        $q->select(['COUNT(*) as cnt']);
    }])
    ->orderBy(['cnt' => 'DESC'])
    ->all();

EDIT: I find better solution.

Books::find()
    ->joinWith(['reviews'])
    ->select(['*', 'COUNT(reviews.*) as cnt'])
    ->groupBy('RELATION_FIELD(Example: reviews.book_id)')
    ->orderBy(['cnt' => 'DESC'])
    ->all();