public function FieldTypeExportBase::getHeaders in Entity Export CSV 8

Get the header columns for a field.

Parameters

\Drupal\Core\Field\FieldDefinitionInterface $field_definition: The field definition.

Return value

array An array of header columns.

Overrides FieldTypeExportInterface::getHeaders

File

src/Plugin/FieldTypeExportBase.php, line 457

Class

FieldTypeExportBase

Base class for Field type export plugins.

Namespace

Drupal\entity_export_csv\Plugin

Code

public function getHeaders(FieldDefinitionInterface $field_definition) {
  $headers = [];
  $columns = $this
    ->getColumns($field_definition);
  $header_label = $this
    ->getHeaderLabel($field_definition);
  $properties_selected = $this
    ->getPropertiesSelected($field_definition);
  if ($columns === 1) {
    if ($this
      ->propertiesInSeparateColumns()) {
      foreach ($properties_selected as $property_name) {
        $headers[] = $header_label . '__' . $this
          ->getPropertyLabel($property_name, $field_definition);
      }
    }
    else {
      $headers[] = $header_label;
    }
  }
  else {
    for ($i = 0; $i < $columns; $i++) {
      if ($this
        ->propertiesInSeparateColumns()) {
        foreach ($properties_selected as $property_name) {
          $headers[] = $header_label . '__' . $this
            ->getPropertyLabel($property_name, $field_definition) . '__' . $i;
        }
      }
      else {
        $headers[$i] = $header_label . '__' . $i;
      }
    }
  }
  return $headers;
}