public BookOutline::nextLink(array $book_link)
Fetches the book link for the next page of the book.
Parameters
array $book_link: A fully loaded book link that is part of the book hierarchy.
Return value
array A fully loaded book link for the page after the one represented in $book_link.
File
- core/modules/book/src/BookOutline.php, line 80
Class
- BookOutline
- Provides handling to render the book outline.
Namespace
Drupal\book
Code
public function nextLink(array $book_link) {
// Assigning the array to $flat resets the array pointer for use with each().
$flat = $this->bookManager->bookTreeGetFlat($book_link);
do {
list($key, ) = each($flat);
} while ($key && $key != $book_link['nid']);
if ($key == $book_link['nid']) {
$next = current($flat);
if ($next) {
$this->bookManager->bookLinkTranslate($next);
}
return $next;
}
}
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