function views_arg_load

Helper function for menu loading. This will automatically be called in order to 'load' a views argument; primarily it will be used to perform validation.

Parameters

$value: The actual value passed.

$name: The name of the view. This needs to be specified in the 'load function' of the menu entry.

$display_id: The display id that will be loaded for this menu item.

$index: The menu argument index. This counts from 1.

File

./views.module, line 394

Code

function views_arg_load($value, $name, $display_id, $index) {
    static $views = array();
    // Make sure we haven't already loaded this views argument for a similar menu
    // item elsewhere.
    $key = $name . ':' . $display_id . ':' . $value . ':' . $index;
    if (isset($views[$key])) {
        return $views[$key];
    }
    if ($view = views_get_view($name)) {
        $view->set_display($display_id);
        $view->init_handlers();
        $ids = array_keys($view->argument);
        $indexes = array();
        $path = explode('/', $view->get_path());
        foreach ($path as $id => $piece) {
            if ($piece == '%' && !empty($ids)) {
                $indexes[$id] = array_shift($ids);
            }
        }
        if (isset($indexes[$index])) {
            if (isset($view->argument[$indexes[$index]])) {
                $arg = $view->argument[$indexes[$index]]
                    ->validate_argument($value) ? $value : FALSE;
                $view->destroy();
                // Store the output in case we load this same menu item again.
                $views[$key] = $arg;
                return $arg;
            }
        }
        $view->destroy();
    }
}