function viewsreference_update_viewsreference_fields in Views Reference Field 8

Same name and namespace in other branches

1. 8.2 viewsreference.install \viewsreference_update_viewsreference_fields()

Update all instances using viewsreference field type with new field.

This is called from hook_update_N() when new fields are added to the schema.

Parameters

string $new_field_name: The name of the new field to be added.

3 calls to viewsreference_update_viewsreference_fields()

viewsreference_update_8100 in ./viewsreference.install

Update node fields already created with argument field.

viewsreference_update_8101 in ./viewsreference.install

Update node fields already created with title field.

viewsreference_update_8102 in ./viewsreference.install

Update node fields already created with data field.

File

./viewsreference.install, line 39

Viewsreference install functions.

Code

function viewsreference_update_viewsreference_fields($new_field_name) {

  // Caches have to be cleared first to ensure new fields
  // are detected in the code.
  drupal_flush_all_caches();

  // Retrieve list of all viewsreference fields mapped by entity type.
  $field_map = \Drupal::service('entity_field.manager')
    ->getFieldMapByFieldType('viewsreference');
  $manager = \Drupal::entityDefinitionUpdateManager();
  $schema = \Drupal::database()
    ->schema();
  foreach ($field_map as $entity_type_id => $fields) {
    foreach (array_keys($fields) as $field_name) {
      $field_storage_definition = $manager
        ->getFieldStorageDefinition($field_name, $entity_type_id);
      $storage = \Drupal::entityTypeManager()
        ->getStorage($entity_type_id);
      if ($storage instanceof SqlContentEntityStorage) {
        $table_mapping = $storage
          ->getTableMapping([
          $field_name => $field_storage_definition,
        ]);
        $table_names = $table_mapping
          ->getDedicatedTableNames();
        $columns = $table_mapping
          ->getColumnNames($field_name);
        foreach ($table_names as $table_name) {
          $field_schema = $field_storage_definition
            ->getSchema();
          $field_exists = $schema
            ->fieldExists($table_name, $columns[$new_field_name]);
          $table_exists = $schema
            ->tableExists($table_name);
          if (!$field_exists && $table_exists) {
            $schema
              ->addField($table_name, $columns[$new_field_name], $field_schema['columns'][$new_field_name]);
          }
        }
      }
      $manager
        ->updateFieldStorageDefinition($field_storage_definition);
    }
  }
}