A prepared list of all fields, keyed by base_table and handler type. File core/modules/views/src/ViewsDataHelper
public ViewsDataHelper::fetchFields($base, $type, $grouping = FALSE
public ViewsDataHelper::__construct(ViewsData $views_data)
Defines a helper class for stuff related to views data. Hierarchy class \Drupal\views\
The views data object, containing the cached information. Type:
protected static ViewsDataHelper::fetchedFieldSort($a, $b)