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* This file is part of the Symfony package.
* (c) Fabien Potencier <firstname.lastname@example.org>
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
* UrlGeneratorInterface is the interface that all URL generator classes must implement.
* The constants in this interface define the different types of resource references that
* are declared in RFC 3986: http://tools.ietf.org/html/rfc3986
* We are using the term "URL" instead of "URI" as this is more common in web applications
* and we do not need to distinguish them as the difference is mostly semantical and
* less technical. Generating URIs, i.e. representation-independent resource identifiers,
* is also possible.
* @author Fabien Potencier <email@example.com>
* @author Tobias Schultze <http://tobion.de>
interface UrlGeneratorInterface extends RequestContextAwareInterface
* Generates an absolute URL, e.g. "http://example.com/dir/file".
public const ABSOLUTE_URL = 0;
* Generates an absolute path, e.g. "/dir/file".
public const ABSOLUTE_PATH = 1;
* Generates a relative path based on the current request path, e.g. "../parent-file".
* @see UrlGenerator::getRelativePath()
public const RELATIVE_PATH = 2;
* Generates a network path, e.g. "//example.com/dir/file".
* Such reference reuses the current scheme but specifies the host.
public const NETWORK_PATH = 3;
* Generates a URL or path for a specific route based on the given parameters.
* Parameters that reference placeholders in the route pattern will substitute them in the
* path or host. Extra params are added as query string to the URL.
* When the passed reference type cannot be generated for the route because it requires a different
* host or scheme than the current one, the method will return a more comprehensive reference
* that includes the required params. For example, when you call this method with $referenceType = ABSOLUTE_PATH
* but the route requires the https scheme whereas the current scheme is http, it will instead return an
* ABSOLUTE_URL with the https scheme and the current host. This makes sure the generated URL matches
* the route in any case.
* If there is no route with the given name, the generator must throw the RouteNotFoundException.
* The special parameter _fragment will be used as the document fragment suffixed to the final URL.
* @return string The generated URL
* @throws RouteNotFoundException If the named route doesn't exist
* @throws MissingMandatoryParametersException When some parameters are missing that are mandatory for the route
* @throws InvalidParameterException When a parameter value for a placeholder is not correct because
* it does not match the requirement
public function generate(string $name, array $parameters = , int $referenceType = self::ABSOLUTE_PATH);