function DeleteCategory($category_id, $category = null)
{
global $DB, $ROOT_CATEGORY;
if ($category == null) {
$category = $DB->Row('SELECT * FROM lx_categories WHERE category_id=?', array($category_id));
}
// Remove cache files
ClearCategoryCache($category['category_id'], $category['path']);
ClearCategoryCache($category['parent_id']);
// Delete all sub-categories
$result = $DB->Query('SELECT * FROM lx_categories WHERE parent_id=?', array($category_id));
while ($subcategory = $DB->NextRow($result)) {
DeleteCategory($subcategory['category_id'], $subcategory);
}
$DB->Free($result);
// Delete all links in this category
$result = $DB->Query('SELECT * FROM lx_links JOIN lx_link_cats USING (link_id) WHERE category_id=?', array($category_id));
while ($link = $DB->NextRow($result)) {
DeleteLink($link['link_id'], FALSE, $link);
}
$DB->Free($result);
// Delete this category
$DB->Update('DELETE FROM lx_categories WHERE category_id=?', array($category_id));
// Update subcategory count for parent category
if ($category['parent_id'] != $ROOT_CATEGORY['parent_id']) {
UpdateSubcategoryCount($category['parent_id']);
}
}
function lxEditCategory()
{
global $DB, $C;
VerifyPrivileges(P_CATEGORY_MODIFY);
// Count number of subcategories and links in this category
$subcategories = $DB->Count('SELECT COUNT(*) FROM lx_categories WHERE parent_id=?', array($_REQUEST['category_id']));
$links = $DB->Count('SELECT COUNT(*) FROM lx_link_cats WHERE category_id=?', array($_REQUEST['category_id']));
$validator = new Validator();
$validator->Register($_REQUEST['name'], V_EMPTY, 'The category name must be filled in');
$validator->Register($_REQUEST['name'], V_REGEX, 'The category name cannot contain a / or _ character', '/^[^\\/_]*$/');
$validator->Register($_REQUEST['name'], V_NOT_REGEX, 'The category name cannot contain a :: character sequence', '/::/');
$validator->Register($_REQUEST['parent_id'], V_EMPTY, 'You must select a parent category');
$validator->Register(is_numeric($_REQUEST['name']), V_FALSE, 'The category name cannot be all numeric');
if ($_REQUEST['template']) {
$validator->Register($_REQUEST['template'], V_REGEX, 'The template name can only contain letters, numbers, periods and underscores', '/^[a-z0-9\\.\\-_]+$/');
$validator->Register($_REQUEST['template'], V_REGEX, 'The template must have a .tpl file extension', '/\\.tpl$/');
}
if ($_REQUEST['parent_id'] == $_REQUEST['category_id']) {
$validator->SetError('A category cannot be it\'s own parent');
}
if ($_REQUEST['crosslink_id'] == $_REQUEST['category_id']) {
$validator->SetError('A crosslink category cannot point to itself');
}
if (!empty($_REQUEST['crosslink_id']) && ($subcategories > 0 || $links > 0)) {
$validator->SetError('This category cannot be set to be a crosslink category because it contains sub-categories and/or links');
}
if (!$validator->Validate()) {
$GLOBALS['errstr'] = join('<br />', $validator->GetErrors());
lxShEditCategory();
return;
}
$parent = $_REQUEST['parent_id'] == 0 ? $GLOBALS['ROOT_CATEGORY'] : $DB->Row('SELECT * FROM lx_categories WHERE category_id=?', array($_REQUEST['parent_id']));
$_REQUEST['name'] = trim($_REQUEST['name']);
$_REQUEST['url_name'] = trim($_REQUEST['url_name']);
if (empty($_REQUEST['crosslink_id'])) {
$_REQUEST['crosslink_id'] = null;
}
$old_category = $DB->Row('SELECT * FROM lx_categories WHERE category_id=?', array($_REQUEST['category_id']));
$DB->Update('UPDATE lx_categories SET ' . 'name=?, ' . 'url_name=?, ' . 'description=?, ' . 'meta_description=?, ' . 'meta_keywords=?, ' . 'parent_id=?, ' . 'path=?, ' . 'path_parts=?, ' . 'path_hash=?, ' . 'template=?, ' . 'crosslink_id=?, ' . 'related_ids=?, ' . 'status=?, ' . 'hidden=? ' . 'WHERE category_id=?', array($_REQUEST['name'], $_REQUEST['url_name'], $_REQUEST['description'], $_REQUEST['meta_description'], $_REQUEST['meta_keywords'], $_REQUEST['parent_id'], '', '', '', $_REQUEST['template'], $_REQUEST['crosslink_id'], $_REQUEST['related_ids'], $_REQUEST['status'], intval($_REQUEST['hidden']), $_REQUEST['category_id']));
$category = $DB->Row('SELECT * FROM lx_categories WHERE category_id=?', array($_REQUEST['category_id']));
$path = GeneratePathData($category, $parent);
$DB->Update('UPDATE lx_categories SET ' . 'path=?, ' . 'path_parts=?, ' . 'path_hash=? ' . 'WHERE category_id=?', array($path['path'], $path['serialized'], $path['hash'], $_REQUEST['category_id']));
UpdateSubcategoryCount($parent['category_id']);
// Update path data for child categories if necessary
if ($old_category['parent_id'] != $category['parent_id'] || $old_category['name'] != $category['name'] || $old_category['url_name'] != $category['url_name']) {
$category['path'] = $path['path'];
$category['path_parts'] = $path['serialized'];
$category['hash'] = $path['hash'];
UpdateChildPaths($category);
}
$GLOBALS['message'] = 'Category successfully updated';
$GLOBALS['added'] = true;
// Ask user to create custom template file if it does not exist
if ($_REQUEST['template'] && !file_exists("{$GLOBALS['BASE_DIR']}/templates/{$_REQUEST['template']}")) {
$GLOBALS['message'] .= "<br />Please create the template file {$_REQUEST['template']} in the templates directory and set it's permissions to 666";
}
// Clear cache for this category and it's parent
ClearCategoryCache($category['category_id'], $path['path']);
ClearCategoryCache($category['parent_id']);
lxShEditCategory();
}
