function BookOutlineStorage::getBookMenuTree

Overrides BookOutlineStorageInterface::getBookMenuTree

File

core/modules/book/src/BookOutlineStorage.php, line 99

Class

BookOutlineStorage

Defines a storage class for books outline.

Namespace

Code

public function getBookMenuTree($bid, $parameters, $min_depth, $max_depth) {
    $query = $this->connection
        ->select('book');
    $query->fields('book');
    for ($i = 1; $i <= $max_depth; $i++) {
        $query->orderBy('p' . $i, 'ASC');
    }
    $query->condition('bid', $bid);
    if (!empty($parameters['expanded'])) {
        $query->condition('pid', $parameters['expanded'], 'IN');
    }
    if ($min_depth != 1) {
        $query->condition('depth', $min_depth, '>=');
    }
    if (isset($parameters['max_depth'])) {
        $query->condition('depth', $parameters['max_depth'], '<=');
    }
    // Add custom query conditions, if any were passed.
    if (isset($parameters['conditions'])) {
        foreach ($parameters['conditions'] as $column => $value) {
            $query->condition($column, $value);
        }
    }
    return $query->execute();
}