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   1  <?php
   2  
   3  /*
   4   * This file is part of the Symfony package.
   5   *
   6   * (c) Fabien Potencier <fabien@symfony.com>
   7   *
   8   * For the full copyright and license information, please view the LICENSE
   9   * file that was distributed with this source code.
  10   */
  11  
  12  namespace Symfony\Component\Routing\Generator;
  13  
  14  use Symfony\Component\Routing\Exception\InvalidParameterException;
  15  use Symfony\Component\Routing\Exception\MissingMandatoryParametersException;
  16  use Symfony\Component\Routing\Exception\RouteNotFoundException;
  17  use Symfony\Component\Routing\RequestContextAwareInterface;
  18  
  19  /**
  20   * UrlGeneratorInterface is the interface that all URL generator classes must implement.
  21   *
  22   * The constants in this interface define the different types of resource references that
  23   * are declared in RFC 3986: http://tools.ietf.org/html/rfc3986
  24   * We are using the term "URL" instead of "URI" as this is more common in web applications
  25   * and we do not need to distinguish them as the difference is mostly semantical and
  26   * less technical. Generating URIs, i.e. representation-independent resource identifiers,
  27   * is also possible.
  28   *
  29   * @author Fabien Potencier <fabien@symfony.com>
  30   * @author Tobias Schultze <http://tobion.de>
  31   */
  32  interface UrlGeneratorInterface extends RequestContextAwareInterface
  33  {
  34      /**
  35       * Generates an absolute URL, e.g. "http://example.com/dir/file".
  36       */
  37      const ABSOLUTE_URL = true;
  38  
  39      /**
  40       * Generates an absolute path, e.g. "/dir/file".
  41       */
  42      const ABSOLUTE_PATH = false;
  43  
  44      /**
  45       * Generates a relative path based on the current request path, e.g. "../parent-file".
  46       *
  47       * @see UrlGenerator::getRelativePath()
  48       */
  49      const RELATIVE_PATH = 'relative';
  50  
  51      /**
  52       * Generates a network path, e.g. "//example.com/dir/file".
  53       * Such reference reuses the current scheme but specifies the host.
  54       */
  55      const NETWORK_PATH = 'network';
  56  
  57      /**
  58       * Generates a URL or path for a specific route based on the given parameters.
  59       *
  60       * Parameters that reference placeholders in the route pattern will substitute them in the
  61       * path or host. Extra params are added as query string to the URL.
  62       *
  63       * When the passed reference type cannot be generated for the route because it requires a different
  64       * host or scheme than the current one, the method will return a more comprehensive reference
  65       * that includes the required params. For example, when you call this method with $referenceType = ABSOLUTE_PATH
  66       * but the route requires the https scheme whereas the current scheme is http, it will instead return an
  67       * ABSOLUTE_URL with the https scheme and the current host. This makes sure the generated URL matches
  68       * the route in any case.
  69       *
  70       * If there is no route with the given name, the generator must throw the RouteNotFoundException.
  71       *
  72       * @param string      $name          The name of the route
  73       * @param mixed       $parameters    An array of parameters
  74       * @param bool|string $referenceType The type of reference to be generated (one of the constants)
  75       *
  76       * @return string The generated URL
  77       *
  78       * @throws RouteNotFoundException              If the named route doesn't exist
  79       * @throws MissingMandatoryParametersException When some parameters are missing that are mandatory for the route
  80       * @throws InvalidParameterException           When a parameter value for a placeholder is not correct because
  81       *                                             it does not match the requirement
  82       */
  83      public function generate($name, $parameters = array(), $referenceType = self::ABSOLUTE_PATH);
  84  }