function TitleResolver::getTitle

File

core/lib/Drupal/Core/Controller/TitleResolver.php, line 50

Class

TitleResolver

Provides the default implementation of the title resolver interface.

Namespace

Code

public function getTitle(Request $request, Route $route) {
    $route_title = NULL;
    // A dynamic title takes priority. Route::getDefault() returns NULL if the
    // named default is not set.  By testing the value directly, we also avoid
    // trying to use empty values.
    if ($callback = $route->getDefault('_title_callback')) {
        $callable = $this->controllerResolver
            ->getControllerFromDefinition($callback);
        $arguments = $this->argumentResolver
            ->getArguments($request, $callable);
        $route_title = call_user_func_array($callable, $arguments);
    }
    elseif ($route->hasDefault('_title') && strlen($route->getDefault('_title')) > 0) {
        $title = $route->getDefault('_title');
        $options = [];
        if ($route->hasDefault('_title_context')) {
            $options['context'] = $route->getDefault('_title_context');
        }
        $args = [];
        if ($raw_parameters = $request->attributes
            ->get('_raw_variables')) {
            foreach ($raw_parameters->all() as $key => $value) {
                if (is_scalar($value)) {
                    $args['@' . $key] = $value;
                    $args['%' . $key] = $value;
                }
            }
        }
        if ($title_arguments = $route->getDefault('_title_arguments')) {
            $args = array_merge($args, (array) $title_arguments);
        }
        // Fall back to a static string from the route.
        $route_title = $this->t($title, $args, $options);
    }
    return $route_title;
}