Commit 48abcd88 authored by webchick's avatar webchick

#550254 by Damien Tournoud, sun: Fixed some causes of menu links are sometimes...

#550254 by Damien Tournoud, sun: Fixed some causes of menu links are sometimes not properly re-parented.
parent 4cc8ae69
......@@ -2907,42 +2907,8 @@ function menu_link_save(&$item) {
}
}
// If we have a parent link ID, we use it to inherit 'menu_name' and 'depth'.
if (isset($item['plid'])) {
if ($item['plid']) {
$parent = db_query("SELECT * FROM {menu_links} WHERE mlid = :mlid", array(':mlid' => $item['plid']))->fetchAssoc();
}
// If the parent link ID is zero, then this link lives at the top-level.
else {
$parent = FALSE;
}
}
// Otherwise, try to find a valid parent link for this link.
else {
$query = db_select('menu_links');
// Only links derived from router items should have module == 'system', and
// we want to find the parent even if it's in a different menu.
if ($item['module'] == 'system') {
$query->condition('module', 'system');
}
// We always respect the link's 'menu_name'; inheritance for router items is
// ensured in _menu_router_build().
$query->condition('menu_name', $item['menu_name']);
// Find the parent - it must be unique.
$parent_path = $item['link_path'];
do {
$parent = FALSE;
$parent_path = substr($parent_path, 0, strrpos($parent_path, '/'));
$new_query = clone $query;
$new_query->condition('link_path', $parent_path);
// Only valid if we get a unique result.
if ($new_query->countQuery()->execute()->fetchField() == 1) {
$parent = $new_query->fields('menu_links')->execute()->fetchAssoc();
}
} while ($parent === FALSE && $parent_path);
}
// If a parent link was found, assign it and derive its menu.
// Try to find a parent link. If found, assign it and derive its menu.
$parent = _menu_link_find_parent($item);
if (!empty($parent['mlid'])) {
$item['plid'] = $parent['mlid'];
$item['menu_name'] = $parent['menu_name'];
......@@ -3063,6 +3029,78 @@ function menu_link_save(&$item) {
return $item['mlid'];
}
/**
* Find a possible parent for a given menu link.
*
* Because the parent of a given link might not exist anymore in the database,
* we apply a set of heuristics to determine a proper parent:
*
* - use the passed parent link if specified and existing.
* - else, use the first existing link down the previous link hierarchy
* - else, for system menu links (derived from hook_menu()), reparent
* based on the path hierarchy.
*
* @param $menu_link
* A menu link.
* @return
* A menu link structure of the possible parent or FALSE if no valid parent
* has been found.
*/
function _menu_link_find_parent($menu_link) {
$parent = FALSE;
// This item is explicitely top-level, skip the rest of the parenting.
if (isset($menu_link['plid']) && empty($menu_link['plid'])) {
return $parent;
}
// If we have a parent link ID, try to use that.
$candidates = array();
if (isset($menu_link['plid'])) {
$candidates[] = $menu_link['plid'];
}
// Else, if we have a link hierarchy try to find a valid parent in there.
if (!empty($menu_link['depth']) && $menu_link['depth'] > 1) {
for ($depth = $menu_link['depth'] - 1; $depth >= 1; $depth--) {
$candidates[] = $menu_link['p' . $depth];
}
}
foreach ($candidates as $mlid) {
$parent = db_query("SELECT * FROM {menu_links} WHERE mlid = :mlid", array(':mlid' => $mlid))->fetchAssoc();
if ($parent) {
return $parent;
}
}
// If everything else failed, try to derive the parent from the path
// hierarchy. This only makes sense for links derived from menu router
// items (ie. from hook_menu()).
if ($menu_link['module'] == 'system') {
$query = db_select('menu_links');
$query->condition('module', 'system');
// We always respect the link's 'menu_name'; inheritance for router items is
// ensured in _menu_router_build().
$query->condition('menu_name', $menu_link['menu_name']);
// Find the parent - it must be unique.
$parent_path = $menu_link['link_path'];
do {
$parent = FALSE;
$parent_path = substr($parent_path, 0, strrpos($parent_path, '/'));
$new_query = clone $query;
$new_query->condition('link_path', $parent_path);
// Only valid if we get a unique result.
if ($new_query->countQuery()->execute()->fetchField() == 1) {
$parent = $new_query->fields('menu_links')->execute()->fetchAssoc();
}
} while ($parent === FALSE && $parent_path);
}
return $parent;
}
/**
* Helper function to clear the page and block caches at most twice per page load.
*/
......
......@@ -466,6 +466,225 @@ class MenuRouterTestCase extends DrupalWebTestCase {
}
}
/**
* Tests for menu links.
*/
class MenuLinksUnitTestCase extends DrupalWebTestCase {
// Use the lightweight testing profile for this test.
protected $profile = 'testing';
public static function getInfo() {
return array(
'name' => 'Menu links',
'description' => 'Test handling of menu links hierarchies.',
'group' => 'Menu',
);
}
/**
* Create a simple hierarchy of links.
*/
function createLinkHierarchy($module = 'menu_test') {
// First remove all the menu links.
db_truncate('menu_links')->execute();
// Then create a simple link hierarchy:
// - $parent
// - $child-1
// - $child-1-1
// - $child-1-2
// - $child-2
$base_options = array(
'link_title' => 'Menu link test',
'module' => $module,
'menu_name' => 'menu_test',
);
$links['parent'] = $base_options + array(
'link_path' => 'menu-test/parent',
);
menu_link_save($links['parent']);
$links['child-1'] = $base_options + array(
'link_path' => 'menu-test/parent/child-1',
'plid' => $links['parent']['mlid'],
);
menu_link_save($links['child-1']);
$links['child-1-1'] = $base_options + array(
'link_path' => 'menu-test/parent/child-1/child-1-1',
'plid' => $links['child-1']['mlid'],
);
menu_link_save($links['child-1-1']);
$links['child-1-2'] = $base_options + array(
'link_path' => 'menu-test/parent/child-1/child-1-2',
'plid' => $links['child-1']['mlid'],
);
menu_link_save($links['child-1-2']);
$links['child-2'] = $base_options + array(
'link_path' => 'menu-test/parent/child-2',
'plid' => $links['parent']['mlid'],
);
menu_link_save($links['child-2']);
return $links;
}
/**
* Assert that at set of links is properly parented.
*/
function assertMenuLinkParents($links, $expected_hierarchy) {
foreach ($expected_hierarchy as $child => $parent) {
$mlid = $links[$child]['mlid'];
$plid = $parent ? $links[$parent]['mlid'] : 0;
$menu_link = menu_link_load($mlid);
menu_link_save($menu_link);
$this->assertEqual($menu_link['plid'], $plid, t('Menu link %mlid has parent of %plid, expected %expected_plid.', array('%mlid' => $mlid, '%plid' => $menu_link['plid'], '%expected_plid' => $plid)));
}
}
/**
* Test automatic reparenting of menu links.
*/
function testMenuLinkReparenting($module = 'menu_test') {
// Check the initial hierarchy.
$links = $this->createLinkHierarchy($module);
$expected_hierarchy = array(
'parent' => FALSE,
'child-1' => 'parent',
'child-1-1' => 'child-1',
'child-1-2' => 'child-1',
'child-2' => 'parent',
);
$this->assertMenuLinkParents($links, $expected_hierarchy);
// Start over, and move child-1 under child-2, and check that all the
// childs of child-1 have been moved too.
$links = $this->createLinkHierarchy($module);
$links['child-1']['plid'] = $links['child-2']['mlid'];
menu_link_save($links['child-1']);
$expected_hierarchy = array(
'parent' => FALSE,
'child-1' => 'child-2',
'child-1-1' => 'child-1',
'child-1-2' => 'child-1',
'child-2' => 'parent',
);
$this->assertMenuLinkParents($links, $expected_hierarchy);
// Start over, and delete child-1, and check that the children of child-1
// have been reassigned to the parent. menu_link_delete() will cowardly
// refuse to delete a menu link defined by the system module, so skip the
// test in that case.
if ($module != 'system') {
$links = $this->createLinkHierarchy($module);
menu_link_delete($links['child-1']['mlid']);
$expected_hierarchy = array(
'parent' => FALSE,
'child-1-1' => 'parent',
'child-1-2' => 'parent',
'child-2' => 'parent',
);
$this->assertMenuLinkParents($links, $expected_hierarchy);
}
// Start over, forcefully delete child-1 from the database, simulating a
// database crash. Check that the children of child-1 have been reassigned
// to the parent, going up on the old path hierarchy stored in each of the
// links.
$links = $this->createLinkHierarchy($module);
// Don't do that at home.
db_delete('menu_links')
->condition('mlid', $links['child-1']['mlid'])
->execute();
$expected_hierarchy = array(
'parent' => FALSE,
'child-1-1' => 'parent',
'child-1-2' => 'parent',
'child-2' => 'parent',
);
$this->assertMenuLinkParents($links, $expected_hierarchy);
// Start over, forcefully delete the parent from the database, simulating a
// database crash. Check that the children of parent are now top-level.
$links = $this->createLinkHierarchy($module);
// Don't do that at home.
db_delete('menu_links')
->condition('mlid', $links['parent']['mlid'])
->execute();
$expected_hierarchy = array(
'child-1-1' => 'child-1',
'child-1-2' => 'child-1',
'child-2' => FALSE,
);
$this->assertMenuLinkParents($links, $expected_hierarchy);
}
/**
* Test automatic reparenting of menu links derived from menu routers.
*/
function testMenuLinkRouterReparenting() {
// Run all the standard parenting tests on menu links derived from
// menu routers.
$this->testMenuLinkReparenting('system');
// Additionnaly, test reparenting based on path.
$links = $this->createLinkHierarchy('system');
// Move child-1-2 has a child of child-2, making the link hierarchy
// inconsistent with the path hierarchy.
$links['child-1-2']['plid'] = $links['child-2']['mlid'];
menu_link_save($links['child-1-2']);
// Check the new hierarchy.
$expected_hierarchy = array(
'parent' => FALSE,
'child-1' => 'parent',
'child-1-1' => 'child-1',
'child-2' => 'parent',
'child-1-2' => 'child-2',
);
$this->assertMenuLinkParents($links, $expected_hierarchy);
// Now delete 'parent' directly from the database, simulating a database
// crash. 'child-1' and 'child-2' should get moved to the
// top-level.
// Don't do that at home.
db_delete('menu_links')
->condition('mlid', $links['parent']['mlid'])
->execute();
$expected_hierarchy = array(
'child-1' => FALSE,
'child-1-1' => 'child-1',
'child-2' => FALSE,
'child-1-2' => 'child-2',
);
$this->assertMenuLinkParents($links, $expected_hierarchy);
// Now delete 'child-2' directly from the database, simulating a database
// crash. 'child-1-2' will get reparented under 'child-1' based on its
// path.
// Don't do that at home.
db_delete('menu_links')
->condition('mlid', $links['child-2']['mlid'])
->execute();
$expected_hierarchy = array(
'child-1' => FALSE,
'child-1-1' => 'child-1',
'child-1-2' => 'child-1',
);
$this->assertMenuLinkParents($links, $expected_hierarchy);
}
}
/**
* Tests rebuilding the menu by setting 'menu_rebuild_needed.'
*/
......
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