public function CachePluginBase::generateResultsKey in Drupal 8

Same name and namespace in other branches

1. 9 core/modules/views/src/Plugin/views/cache/CachePluginBase.php \Drupal\views\Plugin\views\cache\CachePluginBase::generateResultsKey()

Calculates and sets a cache ID used for the result cache.

Return value

string The generated cache ID.

2 calls to CachePluginBase::generateResultsKey()

CachePluginBase::cacheGet in core/modules/views/src/Plugin/views/cache/CachePluginBase.php

Retrieve data from the cache.

CachePluginBase::cacheSet in core/modules/views/src/Plugin/views/cache/CachePluginBase.php

Save data to the cache.

File

core/modules/views/src/Plugin/views/cache/CachePluginBase.php, line 196

Class

CachePluginBase

The base plugin to handle caching.

Namespace

Drupal\views\Plugin\views\cache

Code

public function generateResultsKey() {
  if (!isset($this->resultsKey)) {
    $build_info = $this->view->build_info;
    foreach ([
      'query',
      'count_query',
    ] as $index) {

      // If the default query back-end is used generate SQL query strings from
      // the query objects.
      if ($build_info[$index] instanceof Select) {
        $query = clone $build_info[$index];
        $query
          ->preExecute();
        $build_info[$index] = [
          'query' => (string) $query,
          'arguments' => $query
            ->getArguments(),
        ];
      }
    }
    $key_data = [
      'build_info' => $build_info,
    ];

    // @todo https://www.drupal.org/node/2433591 might solve it to not require
    //    the pager information here.
    $key_data['pager'] = [
      'page' => $this->view
        ->getCurrentPage(),
      'items_per_page' => $this->view
        ->getItemsPerPage(),
      'offset' => $this->view
        ->getOffset(),
    ];
    $key_data += \Drupal::service('cache_contexts_manager')
      ->convertTokensToKeys($this->displayHandler
      ->getCacheMetadata()
      ->getCacheContexts())
      ->getKeys();
    $this->resultsKey = $this->view->storage
      ->id() . ':' . $this->displayHandler->display['id'] . ':results:' . hash('sha256', serialize($key_data));
  }
  return $this->resultsKey;
}