function BookNavigationBlock::build
Same name in other branches
- 8.9.x core/modules/book/src/Plugin/Block/BookNavigationBlock.php \Drupal\book\Plugin\Block\BookNavigationBlock::build()
- 10 core/modules/book/src/Plugin/Block/BookNavigationBlock.php \Drupal\book\Plugin\Block\BookNavigationBlock::build()
- 11.x core/modules/book/src/Plugin/Block/BookNavigationBlock.php \Drupal\book\Plugin\Block\BookNavigationBlock::build()
Overrides BlockPluginInterface::build
File
-
core/
modules/ book/ src/ Plugin/ Block/ BookNavigationBlock.php, line 123
Class
- BookNavigationBlock
- Provides a 'Book navigation' block.
Namespace
Drupal\book\Plugin\BlockCode
public function build() {
$current_bid = 0;
$node = $this->routeMatch
->getParameter('node');
if ($node instanceof NodeInterface && !empty($node->book['bid'])) {
$current_bid = $node->book['bid'];
}
if ($this->configuration['block_mode'] == 'all pages') {
$book_menus = [];
$pseudo_tree = [
0 => [
'below' => FALSE,
],
];
foreach ($this->bookManager
->getAllBooks() as $book_id => $book) {
if ($book['bid'] == $current_bid) {
// If the current page is a node associated with a book, the menu
// needs to be retrieved.
$data = $this->bookManager
->bookTreeAllData($node->book['bid'], $node->book);
$book_menus[$book_id] = $this->bookManager
->bookTreeOutput($data);
}
else {
// Since we know we will only display a link to the top node, there
// is no reason to run an additional menu tree query for each book.
$book['in_active_trail'] = FALSE;
// Check whether user can access the book link.
$book_node = $this->nodeStorage
->load($book['nid']);
$book['access'] = $book_node->access('view');
$pseudo_tree[0]['link'] = $book;
$book_menus[$book_id] = $this->bookManager
->bookTreeOutput($pseudo_tree);
}
$book_menus[$book_id] += [
'#book_title' => $book['title'],
];
}
if ($book_menus) {
return [
'#theme' => 'book_all_books_block',
] + $book_menus;
}
}
elseif ($current_bid) {
// Only display this block when the user is browsing a book and do
// not show unpublished books.
$nid = \Drupal::entityQuery('node')->accessCheck(TRUE)
->condition('nid', $node->book['bid'], '=')
->condition('status', NodeInterface::PUBLISHED)
->execute();
// Only show the block if the user has view access for the top-level node.
if ($nid) {
$tree = $this->bookManager
->bookTreeAllData($node->book['bid'], $node->book);
// There should only be one element at the top level.
$data = array_shift($tree);
$below = $this->bookManager
->bookTreeOutput($data['below']);
if (!empty($below)) {
return $below;
}
}
}
return [];
}
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