# <link> tags Very similar like `` tags you can define `` tags with `$view['link']->add()` method. This method taks four arguments: - `$href` **required**, link target; - `$rels` **required**, link relationships (list of strings, or single string if link has only one relationship); - `$type` *optional*, target MIME type; - `$media` *optional*, media query. ```php add('http://example.com/page-2-slug.html', 'next') ->add('/styles/style.css', 'stylesheet', 'text/css') ->add('/styles/print.css', 'stylesheet', 'text/css', 'print') ->add('/images/favicon.png', ['shortcut', 'icon']); ?> ``` `add()` method implements fluent interface. There is also a handy shortcut method for adding stylesheets - `addStylesheet()`. It assums that your link has `rel="stylesheet"` and sets default MIME-Type to `text/css`. For stylesheets you more often change media query then MIME-Type, so order of last two arguments is inversed: ```php addStylesheet('/styles/style.css') ->addStylesheet('/styles/print.css', 'print'); ?> ``` Even shorter way to add multiple stylesheets is `addStylesheets()` method, which simply adds all links from given array (second parameter defined media query and third - MIME-Type for all links added in given call): ```php addStylesheets([ '/styles/base.css', '/styles/forms.css', '/styles/grids.css', ]); ?> ``` You can manipulate contained links with `getByRel()` and `delete()` methods. First of them returns array of `ChillDev\Bundle\ViewHelpersBundle\Templating\Link\Element` objects that match specified relationship; `delete()` method removes specified element from the collection (`delete()` method implements fluent interface): ```php getByRel('stylesheet') as $element) { if ($element->getMedia() === 'print') { $view['link']->delete($element); } } ?> ``` To output all defined links simply call: ```php … … ``` Link helper automatically escapes all attributes content. **Note:** Depending on XHTML switch state helper will generate tags ended with `>` (for XHTML turned off, default), or `/>` (for enabled XHTML). Thus it's important to enable XHTML before rendering helper output. **Note:** `` tag helper extends [`ArrayObject`](http://php.net/manual/en/class.arrayobject.php), so you can use standard methods to manage contained elements. ## Paths resolving You can use [paths resolved by prefixes](../usage.md#paths-resolving) when defining link source (this works also for stylesheet shortcut call): ```php add('@assets:/styles/style.css', 'stylesheet', 'text/css'); ?> ```