class AssetQueryString

Same name in other branches
  1. 11.x core/lib/Drupal/Core/Asset/AssetQueryString.php \Drupal\Core\Asset\AssetQueryString

Stores a cache busting query string service for asset URLs.

The string changes on every update or full cache flush, forcing browsers to load a new copy of the files, as the URL changed.

Hierarchy

  • class \Drupal\Core\Asset\AssetQueryString implements \Drupal\Core\Asset\AssetQueryStringInterface

Expanded class hierarchy of AssetQueryString

2 files declare their use of AssetQueryString
AssetQueryStringTest.php in core/tests/Drupal/KernelTests/Core/Asset/AssetQueryStringTest.php
State.php in core/lib/Drupal/Core/State/State.php
1 string reference to 'AssetQueryString'
core.services.yml in core/core.services.yml
core/core.services.yml
1 service uses AssetQueryString
asset.query_string in core/core.services.yml
Drupal\Core\Asset\AssetQueryString

File

core/lib/Drupal/Core/Asset/AssetQueryString.php, line 16

Namespace

Drupal\Core\Asset
View source 
class AssetQueryString implements AssetQueryStringInterface {
    
    /**
     * The key used for state.
     */
    const STATE_KEY = 'asset.css_js_query_string';
    
    /**
     * Creates a new AssetQueryString instance.
     *
     * @param \Drupal\Core\State\StateInterface $state
     *   State service.
     * @param \Drupal\Component\Datetime\TimeInterface $time
     *   System time service.
     */
    public function __construct(StateInterface $state, TimeInterface $time) {
    }
    
    /**
     * {@inheritdoc}
     */
    public function reset() : void {
        // The timestamp is converted to base 36 in order to make it more compact.
        $this->state
            ->set(self::STATE_KEY, base_convert(strval($this->time
            ->getRequestTime()), 10, 36));
    }
    
    /**
     * {@inheritdoc}
     */
    public function get() : string {
        return $this->state
            ->get(self::STATE_KEY, '0');
    }

}

Members

Title Modifiers Object type Summary
AssetQueryString::get public function
AssetQueryString::reset public function
AssetQueryString::STATE_KEY constant The key used for state.
AssetQueryString::__construct public function Creates a new AssetQueryString instance.

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