/**
* @return $this
*/
public function getBooks()
{
return $this->hasMany(Book::className(), ['id' => 'book_id'])->viaTable(BooksCategories::tableName(), ['category_id' => 'id']);
}
/**
* Сохранить связи
*
* @param $book_id
*/
private function saveNodes($book_id)
{
if ($this->categoriesValid) {
foreach ($this->categoriesValid as $category) {
$BooksCategories = new BooksCategories();
$BooksCategories->book_id = $book_id;
$BooksCategories->category_id = $category->id;
$BooksCategories->save();
}
}
if ($this->usersValid) {
foreach ($this->usersValid as $user) {
$BooksUsers = new BooksUsers();
$BooksUsers->book_id = $book_id;
$BooksUsers->user_id = $user->id;
$BooksUsers->save();
}
}
}
