Neos\Flow\Configuration\ConfigurationManager::buildSubRouteConfigurations PHP Method

    protected function buildSubRouteConfigurations(array $routesConfiguration, array $subRoutesConfiguration, $subRouteKey, array $subRouteOptions)
    {
        $variables = isset($subRouteOptions['variables']) ? $subRouteOptions['variables'] : [];
        $mergedSubRoutesConfigurations = [];
        foreach ($subRoutesConfiguration as $subRouteConfiguration) {
            foreach ($routesConfiguration as $routeConfiguration) {
                $mergedSubRouteConfiguration = $subRouteConfiguration;
                $mergedSubRouteConfiguration['name'] = sprintf('%s :: %s', isset($routeConfiguration['name']) ? $routeConfiguration['name'] : 'Unnamed Route', isset($subRouteConfiguration['name']) ? $subRouteConfiguration['name'] : 'Unnamed Subroute');
                $mergedSubRouteConfiguration['name'] = $this->replacePlaceholders($mergedSubRouteConfiguration['name'], $variables);
                if (!isset($mergedSubRouteConfiguration['uriPattern'])) {
                    throw new Exception\ParseErrorException('No uriPattern defined in route configuration "' . $mergedSubRouteConfiguration['name'] . '".', 1274197615);
                }
                if ($mergedSubRouteConfiguration['uriPattern'] !== '') {
                    $mergedSubRouteConfiguration['uriPattern'] = $this->replacePlaceholders($mergedSubRouteConfiguration['uriPattern'], $variables);
                    $mergedSubRouteConfiguration['uriPattern'] = $this->replacePlaceholders($routeConfiguration['uriPattern'], [$subRouteKey => $mergedSubRouteConfiguration['uriPattern']]);
                } else {
                    $mergedSubRouteConfiguration['uriPattern'] = rtrim($this->replacePlaceholders($routeConfiguration['uriPattern'], [$subRouteKey => '']), '/');
                }
                if (isset($mergedSubRouteConfiguration['defaults'])) {
                    foreach ($mergedSubRouteConfiguration['defaults'] as $key => $defaultValue) {
                        $mergedSubRouteConfiguration['defaults'][$key] = $this->replacePlaceholders($defaultValue, $variables);
                    }
                }
                $mergedSubRouteConfiguration = Arrays::arrayMergeRecursiveOverrule($routeConfiguration, $mergedSubRouteConfiguration);
                unset($mergedSubRouteConfiguration['subRoutes']);
                $mergedSubRoutesConfigurations[] = $mergedSubRouteConfiguration;
            }
        }
        return $mergedSubRoutesConfigurations;
    }