__construct(RequestStack $requestStack)

Parameters

RequestStack

$requestStack

getFunctions()

{@inheritdoc}

string link(string $uri, string $rel, array $attributes = array())

Adds a "Link" HTTP header.

Parameters

string	$uri	The relation URI
string	$rel	The relation type (e.g. "preload", "prefetch", "prerender" or "dns-prefetch")
array	$attributes	The attributes of this link (e.g. "array('as' => true)", "array('pr' => 0.5)")

Return Value

string

The relation URI

string preload(string $uri, array $attributes = array())

Preloads a resource.

Parameters

string	$uri	A public path
array	$attributes	The attributes of this link (e.g. "array('as' => true)", "array('crossorigin' => 'use-credentials')")

Return Value

string

The path of the asset

string dnsPrefetch(string $uri, array $attributes = array())

Resolves a resource origin as early as possible.

Parameters

string	$uri	A public path
array	$attributes	The attributes of this link (e.g. "array('as' => true)", "array('pr' => 0.5)")

Return Value

string

The path of the asset

string preconnect(string $uri, array $attributes = array())

Initiates a early connection to a resource (DNS resolution, TCP handshake, TLS negotiation).

Parameters

string	$uri	A public path
array	$attributes	The attributes of this link (e.g. "array('as' => true)", "array('pr' => 0.5)")

Return Value

string

The path of the asset

string prefetch(string $uri, array $attributes = array())

Indicates to the client that it should prefetch this resource.

Parameters

string	$uri	A public path
array	$attributes	The attributes of this link (e.g. "array('as' => true)", "array('pr' => 0.5)")

Return Value

string

The path of the asset

string prerender(string $uri, array $attributes = array())

Indicates to the client that it should prerender this resource .

Parameters

string	$uri	A public path
array	$attributes	The attributes of this link (e.g. "array('as' => true)", "array('pr' => 0.5)")

Return Value

string

The path of the asset