protected function UrlGenerator::doGenerate in Drupal 8

Same name and namespace in other branches

9 core/lib/Drupal/Core/Routing/UrlGenerator.php \Drupal\Core\Routing\UrlGenerator::doGenerate()

Substitute the route parameters into the route path.

Note: This code was copied from \Symfony\Component\Routing\Generator\UrlGenerator::doGenerate() and shortened by removing code that is not relevant to Drupal or that is handled separately in ::generateFromRoute(). The Symfony version should be examined for changes in new Symfony releases.

Parameters

array $variables: The variables from the compiled route, corresponding to slugs in the route path.

array $defaults: The defaults from the route.

array $tokens: The tokens from the compiled route.

array $parameters: The route parameters passed to the generator. Parameters that do not match any variables will be added to the result as query parameters.

array $query_params: Query parameters passed to the generator as $options['query']. This may be modified if there are extra parameters not used as route variables.

string $name: The route name or other identifying string from ::getRouteDebugMessage().

Return value

string The url path, without any base path, without the query string, not URL encoded.

Throws

\Symfony\Component\Routing\Exception\MissingMandatoryParametersException When some parameters are missing that are mandatory for the route.

\Symfony\Component\Routing\Exception\InvalidParameterException When a parameter value for a placeholder is not correct because it does not match the requirement.

1 call to UrlGenerator::doGenerate()

UrlGenerator::getInternalPathFromRoute in core/lib/Drupal/Core/Routing/UrlGenerator.php: Gets the path of a route.

File

core/lib/Drupal/Core/Routing/UrlGenerator.php, line 176

Class

UrlGenerator: Generates URLs from route names and parameters.

Namespace

Drupal\Core\Routing

Code

protected function doGenerate(array $variables, array $defaults, array $tokens, array $parameters, array &$query_params, $name) {
  $variables = array_flip($variables);
  $mergedParams = array_replace($defaults, $this->context
    ->getParameters(), $parameters);

  // all params must be given
  if ($diff = array_diff_key($variables, $mergedParams)) {
    throw new MissingMandatoryParametersException(sprintf('Some mandatory parameters are missing ("%s") to generate a URL for route "%s".', implode('", "', array_keys($diff)), $name));
  }
  $url = '';

  // Tokens start from the end of the path and work to the beginning. The
  // first one or several variable tokens may be optional, but once we find a
  // supplied token or a static text portion of the path, all remaining
  // variables up to the start of the path must be supplied to there is no gap.
  $optional = TRUE;

  // Structure of $tokens from the compiled route:
  // If the path is /admin/config/user-interface/shortcut/manage/{shortcut_set}/add-link-inline
  // [ [ 0 => 'text', 1 => '/add-link-inline' ], [ 0 => 'variable', 1 => '/', 2 => '[^/]++', 3 => 'shortcut_set' ], [ 0 => 'text', 1 => '/admin/config/user-interface/shortcut/manage' ] ]
  //
  // For a simple fixed path, there is just one token.
  // If the path is /admin/config
  // [ [ 0 => 'text', 1 => '/admin/config' ] ]
  foreach ($tokens as $token) {
    if ('variable' === $token[0]) {
      if (!$optional || !array_key_exists($token[3], $defaults) || isset($mergedParams[$token[3]]) && (string) $mergedParams[$token[3]] !== (string) $defaults[$token[3]]) {

        // check requirement
        if (!preg_match('#^' . $token[2] . '$#', $mergedParams[$token[3]])) {
          $message = sprintf('Parameter "%s" for route "%s" must match "%s" ("%s" given) to generate a corresponding URL.', $token[3], $name, $token[2], $mergedParams[$token[3]]);
          throw new InvalidParameterException($message);
        }
        $url = $token[1] . $mergedParams[$token[3]] . $url;
        $optional = FALSE;
      }
    }
    else {

      // Static text
      $url = $token[1] . $url;
      $optional = FALSE;
    }
  }
  if ('' === $url) {
    $url = '/';
  }

  // Add extra parameters to the query parameters.
  $query_params += array_diff_key($parameters, $variables, $defaults);
  return $url;
}

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