mediatekformation

HttpCacheListener
in package
implements EventSubscriberInterface

HttpCacheListener handles HTTP cache headers.

It can be configured via the Cache annotation.

Tags
author

Fabien Potencier fabien@symfony.com

Interfaces, Classes, Traits and Enums

EventSubscriberInterface
An EventSubscriber knows itself what events it is interested in.

Table of Contents

$etags  : mixed
$expressionLanguage  : mixed
$lastModifiedDates  : mixed
__construct()  : mixed
getSubscribedEvents()  : array<string, mixed>
Returns an array of event names this subscriber wants to listen to.
onKernelController()  : mixed
Handles HTTP validation headers.
onKernelResponse()  : mixed
Modifies the response to apply HTTP cache headers when needed.
convertToSecondsIfNeeded()  : int
getExpressionLanguage()  : mixed

Properties

Methods

getSubscribedEvents()

Returns an array of event names this subscriber wants to listen to.

public static getSubscribedEvents() : array<string, mixed>

The array keys are event names and the value can be:

  • The method name to call (priority defaults to 0)
  • An array composed of the method name to call and the priority
  • An array of arrays composed of the method names to call and respective priorities, or 0 if unset

For instance:

  • ['eventName' => 'methodName']
  • ['eventName' => ['methodName', $priority]]
  • ['eventName' => [['methodName1', $priority], ['methodName2']]]

The code must not depend on runtime state as it will only be called at compile time. All logic depending on runtime state must be put into the individual methods handling the events.

Return values
array<string, mixed> —

The event names to listen to

onKernelResponse()

Modifies the response to apply HTTP cache headers when needed.

public onKernelResponse(KernelEvent $event) : mixed
Parameters
$event : KernelEvent
Return values
mixed —

convertToSecondsIfNeeded()

private convertToSecondsIfNeeded(int|string $time) : int
Parameters
$time : int|string

Time that can be either expressed in seconds or with relative time format (1 day, 2 weeks, ...)

Return values
int —

getExpressionLanguage()

private getExpressionLanguage() : mixed
Return values
mixed —

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