function FieldPluginBase::elementLabelClasses

Returns the class of the field's label.

Parameters

int|null $row_index: (optional) Index of the row element. If NULL the last row is used. Defaults to NULL.

Overrides FieldHandlerInterface::elementLabelClasses

File

core/modules/views/src/Plugin/views/field/FieldPluginBase.php, line 411

Class

FieldPluginBase

Base class for views fields.

Namespace

Code

public function elementLabelClasses($row_index = NULL) {
  $classes = $this->tokenizeValue($this->options['element_label_class'], $row_index);
  $classes = explode(' ', $classes);
  foreach ($classes as &$class) {
    $class = Html::cleanCssIdentifier($class);
  }
  return implode(' ', $classes);
}