function BookOutlineStorage::hasBooks

Same name in other branches
  1. 8.9.x core/modules/book/src/BookOutlineStorage.php \Drupal\book\BookOutlineStorage::hasBooks()
  2. 10 core/modules/book/src/BookOutlineStorage.php \Drupal\book\BookOutlineStorage::hasBooks()
  3. 11.x core/modules/book/src/BookOutlineStorage.php \Drupal\book\BookOutlineStorage::hasBooks()

Overrides BookOutlineStorageInterface::hasBooks

File

core/modules/book/src/BookOutlineStorage.php, line 36

Class

BookOutlineStorage
Defines a storage class for books outline.

Namespace

Drupal\book

Code

public function hasBooks() {
    return (bool) $this->connection
        ->query('SELECT count([bid]) FROM {book}')
        ->fetchField();
}

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