PHP StorageInterface::exists方法代码示例

 /**
  * Implements Drupal\Core\Config\StorageInterface::exists().
  */
 public function exists($name)
 {
     // The cache would read in the entire data (instead of only checking whether
     // any data exists), and on a potential cache miss, an additional storage
     // lookup would have to happen, so check the storage directly.
     return $this->storage->exists($name);
 }

 /**
  * {@inheritdoc}
  */
 public function exists($name)
 {
     $exists = $this->storage->exists($name);
     foreach ($this->filters as $filter) {
         $exists = $filter->filterExists($name, $exists, $this->storage);
     }
     return $exists;
 }

 /**
  * Read a configuration from install storage or default languages.
  *
  * @param string $name
  *   Configuration object name.
  *
  * @return array
  *   Configuration data from install storage or default language.
  */
 public function read($name)
 {
     if ($this->requiredInstallStorage->exists($name)) {
         return $this->requiredInstallStorage->read($name);
     } elseif ($this->optionalInstallStorage->exists($name)) {
         return $this->optionalInstallStorage->read($name);
     } elseif (strpos($name, 'language.entity.') === 0) {
         // Simulate default languages as if they were shipped as default
         // configuration.
         $langcode = str_replace('language.entity.', '', $name);
         $predefined_languages = $this->languageManager->getStandardLanguageList();
         if (isset($predefined_languages[$langcode])) {
             $data = $this->configStorage->read($name);
             $data['label'] = $predefined_languages[$langcode][0];
             return $data;
         }
     }
 }

 /**
  * Test the import subscriber.
  */
 public function testSubscribers()
 {
     // Without this the config exporter breaks.
     \Drupal::service('config.installer')->installDefaultConfig('module', 'config_devel');
     $filename = vfsStream::url('public://' . static::CONFIGNAME . '.yml');
     drupal_mkdir(vfsStream::url('public://exported'));
     $exported_filename = vfsStream::url('public://exported/' . static::CONFIGNAME . '.yml');
     \Drupal::configFactory()->getEditable('config_devel.settings')->set('auto_import', array(array('filename' => $filename, 'hash' => '')))->set('auto_export', array($exported_filename))->save();
     $this->storage = \Drupal::service('config.storage');
     $this->assertFalse($this->storage->exists(static::CONFIGNAME));
     $subscriber = \Drupal::service('config_devel.auto_import_subscriber');
     for ($i = 2; $i; $i--) {
         $data['label'] = $this->randomString();
         file_put_contents($filename, Yaml::encode($data));
         // The import fires an export too.
         $subscriber->autoImportConfig();
         $this->doAssert($data, Yaml::decode(file_get_contents($exported_filename)));
     }
 }

 /**
  * {@inheritdoc}
  */
 public function exists($name)
 {
     return $this->baseStorage->exists($name);
 }

 /**
  * {@inheritdoc}
  */
 public function buildForm(array $form, FormStateInterface $form_state)
 {
     $form['actions'] = array('#type' => 'actions');
     $form['actions']['submit'] = array('#type' => 'submit', '#value' => $this->t('Import all'));
     $source_list = $this->syncStorage->listAll();
     $storage_comparer = new StorageComparer($this->syncStorage, $this->activeStorage, $this->configManager);
     if (empty($source_list) || !$storage_comparer->createChangelist()->hasChanges()) {
         $form['no_changes'] = array('#type' => 'table', '#header' => array($this->t('Name'), $this->t('Operations')), '#rows' => array(), '#empty' => $this->t('There are no configuration changes to import.'));
         $form['actions']['#access'] = FALSE;
         return $form;
     } elseif (!$storage_comparer->validateSiteUuid()) {
         drupal_set_message($this->t('The staged configuration cannot be imported, because it originates from a different site than this site. You can only synchronize configuration between cloned instances of this site.'), 'error');
         $form['actions']['#access'] = FALSE;
         return $form;
     }
     // A list of changes will be displayed, so check if the user should be
     // warned of potential losses to configuration.
     if ($this->snapshotStorage->exists('core.extension')) {
         $snapshot_comparer = new StorageComparer($this->activeStorage, $this->snapshotStorage, $this->configManager);
         if (!$form_state->getUserInput() && $snapshot_comparer->createChangelist()->hasChanges()) {
             $change_list = array();
             foreach ($snapshot_comparer->getAllCollectionNames() as $collection) {
                 foreach ($snapshot_comparer->getChangelist(NULL, $collection) as $config_names) {
                     if (empty($config_names)) {
                         continue;
                     }
                     foreach ($config_names as $config_name) {
                         $change_list[] = $config_name;
                     }
                 }
             }
             sort($change_list);
             $message = [['#markup' => $this->t('The following items in your active configuration have changes since the last import that may be lost on the next import.')], ['#theme' => 'item_list', '#items' => $change_list]];
             drupal_set_message($this->renderer->renderPlain($message), 'warning');
         }
     }
     // Store the comparer for use in the submit.
     $form_state->set('storage_comparer', $storage_comparer);
     // Add the AJAX library to the form for dialog support.
     $form['#attached']['library'][] = 'core/drupal.ajax';
     foreach ($storage_comparer->getAllCollectionNames() as $collection) {
         if ($collection != StorageInterface::DEFAULT_COLLECTION) {
             $form[$collection]['collection_heading'] = array('#type' => 'html_tag', '#tag' => 'h2', '#value' => $this->t('@collection configuration collection', array('@collection' => $collection)));
         }
         foreach ($storage_comparer->getChangelist(NULL, $collection) as $config_change_type => $config_names) {
             if (empty($config_names)) {
                 continue;
             }
             // @todo A table caption would be more appropriate, but does not have the
             //   visual importance of a heading.
             $form[$collection][$config_change_type]['heading'] = array('#type' => 'html_tag', '#tag' => 'h3');
             switch ($config_change_type) {
                 case 'create':
                     $form[$collection][$config_change_type]['heading']['#value'] = $this->formatPlural(count($config_names), '@count new', '@count new');
                     break;
                 case 'update':
                     $form[$collection][$config_change_type]['heading']['#value'] = $this->formatPlural(count($config_names), '@count changed', '@count changed');
                     break;
                 case 'delete':
                     $form[$collection][$config_change_type]['heading']['#value'] = $this->formatPlural(count($config_names), '@count removed', '@count removed');
                     break;
                 case 'rename':
                     $form[$collection][$config_change_type]['heading']['#value'] = $this->formatPlural(count($config_names), '@count renamed', '@count renamed');
                     break;
             }
             $form[$collection][$config_change_type]['list'] = array('#type' => 'table', '#header' => array($this->t('Name'), $this->t('Operations')));
             foreach ($config_names as $config_name) {
                 if ($config_change_type == 'rename') {
                     $names = $storage_comparer->extractRenameNames($config_name);
                     $route_options = array('source_name' => $names['old_name'], 'target_name' => $names['new_name']);
                     $config_name = $this->t('@source_name to @target_name', array('@source_name' => $names['old_name'], '@target_name' => $names['new_name']));
                 } else {
                     $route_options = array('source_name' => $config_name);
                 }
                 if ($collection != StorageInterface::DEFAULT_COLLECTION) {
                     $route_name = 'config.diff_collection';
                     $route_options['collection'] = $collection;
                 } else {
                     $route_name = 'config.diff';
                 }
                 $links['view_diff'] = array('title' => $this->t('View differences'), 'url' => Url::fromRoute($route_name, $route_options), 'attributes' => array('class' => array('use-ajax'), 'data-dialog-type' => 'modal', 'data-dialog-options' => json_encode(array('width' => 700))));
                 $form[$collection][$config_change_type]['list']['#rows'][] = array('name' => $config_name, 'operations' => array('data' => array('#type' => 'operations', '#links' => $links)));
             }
         }
     }
     return $form;
 }

 /**
  * Tests storage CRUD operations.
  *
  * @todo Coverage: Trigger PDOExceptions / Database exceptions.
  */
 function testCRUD()
 {
     $name = 'config_test.storage';
     // Checking whether a non-existing name exists returns FALSE.
     $this->assertIdentical($this->storage->exists($name), FALSE);
     // Reading a non-existing name returns FALSE.
     $data = $this->storage->read($name);
     $this->assertIdentical($data, FALSE);
     // Writing data returns TRUE and the data has been written.
     $data = array('foo' => 'bar');
     $result = $this->storage->write($name, $data);
     $this->assertIdentical($result, TRUE);
     $raw_data = $this->read($name);
     $this->assertIdentical($raw_data, $data);
     // Checking whether an existing name exists returns TRUE.
     $this->assertIdentical($this->storage->exists($name), TRUE);
     // Writing the identical data again still returns TRUE.
     $result = $this->storage->write($name, $data);
     $this->assertIdentical($result, TRUE);
     // Listing all names returns all.
     $names = $this->storage->listAll();
     $this->assertTrue(in_array('system.performance', $names));
     $this->assertTrue(in_array($name, $names));
     // Listing all names with prefix returns names with that prefix only.
     $names = $this->storage->listAll('config_test.');
     $this->assertFalse(in_array('system.performance', $names));
     $this->assertTrue(in_array($name, $names));
     // Rename the configuration storage object.
     $new_name = 'config_test.storage_rename';
     $this->storage->rename($name, $new_name);
     $raw_data = $this->read($new_name);
     $this->assertIdentical($raw_data, $data);
     // Rename it back so further tests work.
     $this->storage->rename($new_name, $name);
     // Deleting an existing name returns TRUE.
     $result = $this->storage->delete($name);
     $this->assertIdentical($result, TRUE);
     // Deleting a non-existing name returns FALSE.
     $result = $this->storage->delete($name);
     $this->assertIdentical($result, FALSE);
     // Deleting all names with prefix deletes the appropriate data and returns
     // TRUE.
     $files = array('config_test.test.biff', 'config_test.test.bang', 'config_test.test.pow');
     foreach ($files as $name) {
         $this->storage->write($name, $data);
     }
     $result = $this->storage->deleteAll('config_test.');
     $names = $this->storage->listAll('config_test.');
     $this->assertIdentical($result, TRUE);
     $this->assertIdentical($names, array());
     // Test renaming an object that does not exist throws an exception.
     try {
         $this->storage->rename('config_test.storage_does_not_exist', 'config_test.storage_does_not_exist_rename');
     } catch (\Exception $e) {
         $class = get_class($e);
         $this->pass($class . ' thrown upon renaming a nonexistent storage bin.');
     }
     // Test renaming to an object that already exists throws an exception.
     try {
         $this->storage->rename('system.cron', 'system.performance');
     } catch (\Exception $e) {
         $class = get_class($e);
         $this->pass($class . ' thrown upon renaming a nonexistent storage bin.');
     }
 }

 /**
  * {@inheritdoc}
  */
 public function exists($name)
 {
     return isset($this->replacementData[$this->collection][$name]) || $this->storage->exists($name);
 }