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New in Symfony 2.2: New URL Generation Options
by
Fabien Potencier
– January 14, 2013
– 9 comments
Contributed by
Tobias Schultze
in #3958.
The Routing system is probably one of the most important Component in Symfony. It's a complex beast as it must be flexible, feature-full, and performant at the same time.
Today, let's see a very nice feature that was added to the generator system. I suppose that you all know that Symfony is able to generate two kinds of URLs:
absolute URLs:
http://example.org/blog/what-a-wonderful-world- Twig
1
{{ url('blog', { post: 'what-a-wonderful-world' }) }}
- PHP
1 2
$generator->generate('blog', array('post' => 'what-a-wonderful-world'), true); $generator->generate('blog', array('post' => 'what-a-wonderful-world'), UrlGeneratorInterface::ABSOLUTE_URL);
- Twig
domain-relative URLs (the default):
/blog/what-a-wonderful-world- Twig
1
{{ path('blog', { post: 'what-a-wonderful-world' }) }}
- PHP
1 2
$generator->generate('blog', array('post' => 'what-a-wonderful-world')); $generator->generate('blog', array('post' => 'what-a-wonderful-world'), UrlGeneratorInterface::ABSOLUTE_PATH);
- Twig
As of Symfony 2.2 (as of beta2), there are two new kinds of URLs you can generate:
schema-relative URLs:
//example.org/blog/what-a-wonderful-world- Twig
1
{{ url('blog', { post: 'what-a-wonderful-world' }, true) }}
- PHP
1
$generator->generate('blog', array('post' => 'what-a-wonderful-world'), UrlGeneratorInterface::NETWORK_PATH);
- Twig
path-relative URLs:
../(relative path based on the current URL)- Twig
1
{{ path('blog', { post: 'what-a-wonderful-world' }, true) }}
- PHP
1
$generator->generate('blog', array('post' => 'what-a-wonderful-world'), UrlGeneratorInterface::RELATIVE_PATH);
- Twig
Schema-relative URLs are useful for instance when you need to include a resource hosted from an external website (think jQuery from a CDN) on a website where some pages are accessible via HTTP or HTTPS. Instead of using a piece of JavaScript to switch the protocol depending on the protocol used on the page, and to avoid annoying browser warnings, just use a schema-relative URL:
1 | //ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js
|
Path-relative URLs comes in very handy if you need to generate static HTML
files that can be downloaded to be browsed locally in a browser (think static
blog generator for instance). Let's say that you are on the
http://example.org/blog/what-a-wonderful-world page and you want to create
a link to the main blog page, which URL is http://example.org/blog/, the
relative path URL would be: ./:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 | use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\Routing\RouteCollection;
use Symfony\Component\Routing\Route;
use Symfony\Component\Routing\RequestContext;
use Symfony\Component\Routing\Generator\UrlGenerator;
// routes
$routes = new RouteCollection();
$routes->add('page', new Route('/blog/{slug}'));
$routes->add('blog', new Route('/blog/'));
// current context
$request = Request::create('http://example.org/blog/what-a-wonderful-world/comments');
$context = new RequestContext();
$context->fromRequest($request);
// create a generator
$generator = new UrlGenerator($routes, $context);
// generate a relative-path URL (will output ./)
echo $generator->generate('blog', array(), UrlGeneratorInterface::RELATIVE_PATH);
|
Speaking of a static blog generator, we would probably need a global setting
to switch from domain-relative URLs (the default) to path-relative URLs (see
ticket #6631) when using
the path Twig function in templates.
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http://www.stevesouders.com/blog/2010/02/10/5a-missing-schema-double-download/
Next up... object routes? :)