Yii2 many-to-many with three tables. How to organize?

Question

Yii

There are tables:
- Author
- Document
it is clear that there is a Many-to-Many relationship.
You need to create a third table, Author-Document-relation , which will store author_id:doc_id, i.e. relations.
The question is how to organize a selection in the third table using the ActiveQuery::hasMany() method?

Answer 1

$this->hasMany(
    Document::className(),
    ['id' => 'document_id']
)->viaTable(
    'author_documents',
    ['author_id' => 'id']
);