protected ConfigInstaller::findPreExistingConfiguration(StorageInterface $storage)
Finds pre-existing configuration objects for the provided extension.
Extensions can not be installed if configuration objects exist in the active storage with the same names. This can happen in a number of ways, commonly:
array Array of configuration object names that already exist keyed by collection.
protected function findPreExistingConfiguration(StorageInterface $storage) { $existing_configuration = array(); // Gather information about all the supported collections. $collection_info = $this->configManager->getConfigCollectionInfo(); foreach ($collection_info->getCollectionNames() as $collection) { $config_to_create = array_keys($this->getConfigToCreate($storage, $collection)); $active_storage = $this->getActiveStorages($collection); foreach ($config_to_create as $config_name) { if ($active_storage->exists($config_name)) { $existing_configuration[$collection][] = $config_name; } } } return $existing_configuration; }
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https://api.drupal.org/api/drupal/core!lib!Drupal!Core!Config!ConfigInstaller.php/function/ConfigInstaller::findPreExistingConfiguration/8.1.x