function views_sort_null_field_field_views_data_alter in Views Sort Null Field 1.x

Same name and namespace in other branches

1. 8 views_sort_null_field.views.inc \views_sort_null_field_field_views_data_alter()
2. 7 views_sort_null_field.views.inc \views_sort_null_field_field_views_data_alter()
3. 9.1.x views_sort_null_field.views.inc \views_sort_null_field_field_views_data_alter()

Implements hook_field_views_data_alter().

File

./views_sort_null_field.views.inc, line 11

Contains Views hooks.

Code

function views_sort_null_field_field_views_data_alter(array &$data, \Drupal\field\FieldStorageConfigInterface $field_storage) {
  $entity_type_id = $field_storage
    ->getTargetEntityTypeId();
  $entity_type = \Drupal::entityTypeManager()
    ->getDefinition($entity_type_id);
  $field_name = $field_storage
    ->getName();
  list($label) = views_entity_field_label($entity_type_id, $field_name);
  $args = array(
    '@label' => $label,
    '@name' => $field_name,
  );
  $table_mapping = \Drupal::entityTypeManager()
    ->getStorage($entity_type_id)
    ->getTableMapping();
  $field_columns = $field_storage
    ->getColumns();
  $table_alias = $entity_type_id . '__' . $field_name;
  foreach ($field_columns as $column => $attributes) {

    // Skip columns that can't be NULL: our filter is pointless for these.
    if (!empty($attributes['not null'])) {
      continue;
    }
    $args['@column'] = $column;
    $column_real_name = $table_mapping
      ->getFieldColumnName($field_storage, $column);
    if (count($field_columns) == 1 || $column == 'value') {
      $title = t('@label (@name) null sort', $args);
      $title_short = t("@label null sort", $args);
    }
    else {
      $title = t('@label (@name:@column) null sort', $args);
      $title_short = t('@label:@column null sort', $args);
    }
    $data[$table_alias][$column_real_name . '_null_sort'] = array(
      'title' => $title,
      'title short' => $title_short,
      'group' => $entity_type
        ->getLabel(),
      'help' => t('Sort entities with no value (NULL) last or first.'),
      'sort' => array(
        'field' => $column_real_name,
        'id' => 'null_sort',
      ),
    );
  }
}