/**
* Normally to be called after 'updatePagesBasedOnHierarchy', basically updates the ParentID/Sort of pages
* based on how they're structured for the given menu.
*
* (Silverstripe doesn't seperate its menu and page-structure like Wordpress)
*/
public function updatePagesBasedOnNavMenu($menu_slug = '')
{
if (!$menu_slug) {
// If first parameter left blank, throw exception showing the developer what menu slugs they can provide.
$menuItems = '';
foreach ($this->_db->getNavMenuTypes() as $navMenuType) {
$menuItems .= $navMenuType['name'] . ' (slug: ' . $navMenuType['slug'] . ')' . ", \n";
}
throw new WordpressImportException("Must provide menu slug for " . __FUNCTION__ . "({$menu_slug}).\nAvailable menus:\n" . $menuItems);
}
$this->logFunctionStart(__FUNCTION__);
$wpNavMenuItems = $this->_db->getNavMenuItems($menu_slug);
if (!$wpNavMenuItems) {
throw new WordpressImportException("Bad menu slug. Either invalid or does not contain any menu items.");
}
// Make all non-Wordpress pages no longer show in menu.
$list = SiteTree::get()->filter(array('WordpressID' => 0, 'ShowInMenus' => 1));
foreach ($list as $record) {
$record->ShowInMenus = 0;
$record->WordpressData = true;
try {
$this->writeAndPublishRecord($record);
} catch (Exception $e) {
$this->log($record, 'error', $e);
}
}
// Make SiteTree items match the nav_menu_item post_type's structure and sort order.
$wordpressIDsToSilverstripeIDs = singleton('SiteTree')->WordpressIDToSilverstripeIDMap();
$trackRecordsChangedByIDs = array();
$list = $this->applyWordpressFilter(SiteTree::get());
foreach ($wpNavMenuItems as $wpData) {
$wpMeta = $this->_db->attachAndGetPostMeta($wpData);
if (!isset($wpMeta['_menu_item_type'])) {
throw new Exception('Menu item is missing _menu_item_type postmeta. Your Wordpress database might be too old. Update it if possible.');
}
$record = null;
if (isset($wpMeta['_menu_item_object_id']) && $wpMeta['_menu_item_object_id'] > 0) {
// Detect if menu has an associated page ID, if so, and if that page has been imported, use it.
$record = $list->find('WordpressID', $wpMeta['_menu_item_object_id']);
}
$type = $wpMeta['_menu_item_type'];
if ($type === 'post_type' || $type === 'custom') {
if (!$record) {
// If direct link to external URL or home.
if (isset($wpMeta['_menu_item_url']) && $wpMeta['_menu_item_url']) {
// A direct URL link
// Eg: "http://www.mylivesite.com.au/newsletters/"
$url = $wpMeta['_menu_item_url'];
if ($url === '/') {
// Detect "home" page
// - _menu_item_object_id references itself in this case, so we
// can't use it to detect the record.
$record = $list->filter(array('URLSegment' => 'home'))->first();
} else {
$record = RedirectorPage::get()->filter(array('RedirectionType' => 'External', 'ExternalURL' => $url))->first();
if (!$record) {
$record = RedirectorPage::create();
$record->RedirectionType = 'External';
$record->ExternalURL = $url;
}
$record->WordpressData = $wpData;
}
} else {
$this->log('Found "custom" menu item type (Post ID #' . $wpData['ID'] . ') with Sort "' . $sort . '". Unable to handle. Skipping.', 'notice');
continue;
}
}
} else {
throw new Exception('Unable to handle menu type "' . $type . '"');
}
if (!$record) {
DB::alteration_message('Unable to find menu items post record.', 'error');
continue;
}
if (isset($trackRecordsChangedByIDs[$record->ID])) {
DB::alteration_message('Already used "' . $record->Title . '" #' . $record->ID . ' in this menu.', 'error');
continue;
}
// Determine where to place Page in SS based on Wordpress IDs
$wordpressParentID = 0;
$wpParentNavItem = null;
if (isset($wpMeta['_menu_item_menu_item_parent']) && $wpMeta['_menu_item_menu_item_parent'] > 0) {
$wpParentNavID = $wpMeta['_menu_item_menu_item_parent'];
if ($wpParentNavID > 0 && isset($wpNavMenuItems[$wpParentNavID])) {
$wpParentNavItem = $wpNavMenuItems[$wpParentNavID];
$wpParentMeta = $this->_db->attachAndGetPostMeta($wpParentNavItem);
if (!$wpParentMeta) {
throw new Exception('Missing meta on parent nav_menu_item #' . $wpParentNavID);
}
$wordpressParentID = $wpParentMeta['_menu_item_object_id'];
} else {
throw new Exception('Unable to find parent nav_menu_item #' . $wpParentNavID);
}
}
if ($wordpressParentID > 0) {
$silverstripeParentID = $wordpressIDsToSilverstripeIDs[$wordpressParentID];
$record->ParentID = $silverstripeParentID;
} else {
if ($wordpressParentID == 0) {
$record->ParentID = $this->root_parent_id;
}
}
// Update with menu data
$record->MenuTitle = $wpData['post_title'];
if ($record instanceof RedirectorPage && $record->Title == '') {
$record->Title = $record->MenuTitle;
}
$record->ShowInMenus = 1;
// NOTE(Jake): Wordpress keeps its menu_order value going even under parents, like so:
// - Menu Item 1 (menu_order = 1)
// - Menu Sub Item 1 (menu_order = 2)
// - Menu Item 2 (menu_order = 3)
// - Menu Sub Item 1 (menu_order = 4)
// - Menu Sub Item 2 (menu_order = 5)
$record->Sort = $wpData['menu_order'];
if ($changedFields = $record->getChangedFields(true, DataObject::CHANGE_VALUE)) {
try {
$this->writeAndPublishRecord($record);
$trackRecordsChangedByIDs[$record->ID] = $record->ID;
} catch (Exception $e) {
$this->log($record, 'error', $e);
}
} else {
$this->log($record, 'nochange');
}
}
$this->logFunctionEnd(__FUNCTION__);
}
