function BookOutlineStorage::getBooks

Overrides BookOutlineStorageInterface::getBooks

File

core/modules/book/src/BookOutlineStorage.php, line 29

Class

BookOutlineStorage

Defines a storage class for books outline.

Namespace

Code

public function getBooks() {
    return $this->connection
        ->query("SELECT DISTINCT([bid]) FROM {book}")
        ->fetchCol();
}