public function HierarchyTreeSummary::render in Entity Reference Hierarchy 3.x

Renders the field.

Parameters

\Drupal\views\ResultRow $values: The values retrieved from a single row of a view's query result.

Return value

string|\Drupal\Component\Render\MarkupInterface The rendered output. If the output is safe it will be wrapped in an object that implements MarkupInterface. If it is empty or unsafe it will be a string.

Overrides FieldPluginBase::render

File

src/Plugin/views/field/HierarchyTreeSummary.php, line 108

Class

HierarchyTreeSummary

A handler to provide a field that show hierarchy depth of item.

Namespace

Drupal\entity_hierarchy\Plugin\views\field

Code

public function render(ResultRow $values) {
  if ($this->options['summary_type'] == 'child_counts') {
    $storage = $this
      ->getTreeStorage();
    $output = [];
    if ($entity = $this
      ->getEntity($values)) {
      $stub = $this->nodeKeyFactory
        ->fromEntity($entity);
      $level = 1;
      while ($entities = $storage
        ->findDescendants($stub, 1, $level)) {

        // This is inefficient and one reason why this is only an admin tool.
        $entities = $this->treeMapper
          ->loadEntitiesForTreeNodesWithoutAccessChecks($entity
          ->getEntityTypeId(), $entities);
        $output[] = count($entities);
        $level++;
      }
    }
    return implode(' / ', $output);
  }
}