Integration with Nice Menus module
Last modified: April 4, 2009 - 01:24
this is a variant of the above code, which displays the book contents using nice_menus.module:
<?php
$book_top_page = 159;
$book_top_title = "menu name";
$levels_deep = 2;
$nice_direction = "right";
$emulate_book_block = true;
if (!function_exists('book_struct_recurse')){
function book_struct_recurse($nid, $levels_deep, $children, $current_lineage = array(), $emulate_book_block = true) {
$struct = '';
if ($children[$nid] && ($levels_deep > 0 || ($emulate_book_block && in_array($nid, $current_lineage)))) {
$struct = '<ul>';
foreach ($children[$nid] as $key => $node) {
if ($tree = book_struct_recurse($node->nid, $levels_deep - 1, $children, $current_lineage, $emulate_book_block)) {
$struct .= '<li class="menuparent">';
$struct .= l($node->title, 'node/'. $node->nid);
$struct .= $tree;
$struct .= '</li>';
}
else {
if ($children[$node->nid]){
$struct .= '<li class="collapsed">'. l($node->title, 'node/'. $node->nid) .'</li>';
}
else {
$struct .= '<li class="leaf">'. l($node->title, 'node/'. $node->nid) .'</li>';
}
}
}
$struct .= '</ul>';
return $struct;
}
}
}
$current_lineage = array();
$result = db_query(db_rewrite_sql('SELECT n.nid, n.title, b.parent, b.weight FROM {node} n INNER JOIN {book} b ON n.nid = b.nid WHERE n.status = 1 ORDER BY b.weight, n.title'));
while ($node = db_fetch_object($result)) {
if (!$children[$node->parent]) {
$children[$node->parent] = array();
}
array_push($children[$node->parent], $node);
if (arg(0) == 'node' && is_numeric(arg(1)) && arg(1) == $node->nid) {
$_temp = book_location($node);
foreach ($_temp as $key => $val){
$current_lineage[] = $val->nid;
}
$current_lineage[] = arg(1);
}
}
echo "<ul class='nice-menu nice-menu-$nice_direction'>".
"<li class='menuparent'>".l($book_top_title, 'node/'.$book_top_page).
book_struct_recurse($book_top_page, $levels_deep, $children, $current_lineage, $emulate_book_block);
"</li></ul>";
?>This is a working Drupal 6.x version:
<?php
$book_top_page = 1;
$book_top_title = "try";
$levels_deep = 20;
$nice_direction = "right";
$emulate_book_block = true;
if (!function_exists('book_struct_recurse')){
function book_struct_recurse($nid, $levels_deep, $children, $current_lineage = array(), $emulate_book_block = true) {
$struct = '';
if ($children[$nid] && ($levels_deep > 0 || ($emulate_book_block && in_array($nid, $current_lineage)))) {
$struct = '<ul>';
foreach ($children[$nid] as $key => $node) {
if ($tree = book_struct_recurse($node->nid, $levels_deep - 1, $children, $current_lineage, $emulate_book_block)) {
$struct .= '<li class="menuparent">';
$struct .= l($node->title, 'node/'. $node->nid);
$struct .= $tree;
$struct .= '</li>';
}
else {
if ($children[$node->nid]){
$struct .= '<li class="collapsed">'. l($node->title, 'node/'. $node->nid) .'</li>';
}
else {
$struct .= '<li class="leaf">'. l($node->title, 'node/'. $node->nid) .'</li>';
}
}
}
$struct .= '</ul>';
return $struct;
}
}
}
if ($node = menu_get_object('node', 1, 'node/'.$book_top_page)) {
// Only display this block when $book_top_page refers to an actual book page
$title = db_result(db_query(db_rewrite_sql('SELECT n.title FROM {node} n WHERE n.nid = %d'), $node->book['bid']));
// Only show the block if the user has view access for the top-level node.
if ($title) {
// first retrieve the book structure from the menu system
$result = db_query('SELECT link_path, link_title AS title, mlid, plid FROM {menu_links} WHERE menu_name="%s" ORDER BY weight, link_title', $node->book['menu_name']);
$menu = array();
while ($m = db_fetch_object($result)) {
$menu[$m->mlid] = $m;
$menu[$m->mlid]->nid = $nid = (int)substr($m->link_path, 5);
}
// now use the $menu array to build a proper $children and $parent array
$children = array();
$parent = array();
foreach ($menu as $key => $val) {
$nid = is_null($menu[$val->plid]->nid) ? 0 : $menu[$val->plid]->nid;
if (!$children[$nid]) {
$children[$nid] = array();
}
array_push($children[$nid], $val);
$parent[is_null($val->nid) ? 0 : (int)$val->nid] = $nid;
}
// $children array properly formed, now get the $current_lineage array
$current_lineage = array();
if (arg(0) == 'node' && is_numeric(arg(2)) && $parent[arg(2)]) {
$nid = arg(2);
while ($nid) {
array_unshift($current_lineage, $nid);
$nid = $parent[$nid];
}
}
echo "<ul class='nice-menu nice-menu-$nice_direction'>".
"<li class='menuparent'>".l($book_top_title, 'node/'.$book_top_page).
book_struct_recurse($book_top_page, $levels_deep, $children, $current_lineage, $emulate_book_block);
"</li></ul>";
}
}
?>Caution
Please review this node: http://drupal.org/node/236418#comment-1024401
For Drupal 6.x, there have been reports that this code does not work.