Login Register

BookOutlineStorage::hasBooks

public BookOutlineStorage::hasBooks()

Checks if there are any books.

Return value

bool TRUE if there are books, FALSE if not.

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();
}

Links:

https://api.drupal.org/api/drupal/core%21modules%21book%21src%21BookOutlineStorage.php/function/BookOutlineStorage%3A%3AhasBooks/8.2.x

doc_Drupal

2025-01-10 15:47:30

Comments

Leave a Comment

Please login to continue.

Popular Articles

BookOutlineStorageInterface::hasBooks public BookOutlineStorageInterface::hasBooks() Checks if there are any books. Return value bool TRUE if there are books, FALSE if not. File core/mod

BookOutlineStorage Defines a storage class for books outline. Hierarchy class \Drupal\book\BookOutlineStorage implements BookOutlineStorageInterface File core/module

BookOutlineStorage::$connection Database Service Object. Type: \Drupal\Core\Database\Connection File core/modules/book/src/BookOutlineStorage.php, line 17 Class BookOutlineStora

BookOutlineStorage::getBookMenuTree public BookOutlineStorage::getBookMenuTree($bid, $parameters, $min_depth, $max_depth) Builds tree data used for the menu tree. Parameters int $bid:

BookOutlineStorage::getBooks public BookOutlineStorage::getBooks() Gets books (the highest positioned book links). Return value array An array of book IDs. Overrides BookOutline