public function EntityFieldRenderer::render in Drupal 9

Same name and namespace in other branches

1. 8 core/modules/views/src/Entity/Render/EntityFieldRenderer.php \Drupal\views\Entity\Render\EntityFieldRenderer::render()

Renders entity field data.

Parameters

\Drupal\views\ResultRow $row: A single row of the query result.

\Drupal\views\Plugin\views\field\EntityField $field: (optional) A field to be rendered.

Return value

array A renderable array for the entity data contained in the result row.

Overrides RendererBase::render

File

core/modules/views/src/Entity/Render/EntityFieldRenderer.php, line 138

Class

EntityFieldRenderer

Renders entity fields.

Namespace

Drupal\views\Entity\Render

Code

public function render(ResultRow $row, EntityField $field = NULL) {

  // The method is called for each field in each result row. In order to
  // leverage multiple-entity building of formatter output, we build the
  // render arrays for all fields in all rows on the first call.
  if (!isset($this->build)) {
    $this->build = $this
      ->buildFields($this->view->result);
  }
  if (isset($field)) {
    $field_id = $field->options['id'];

    // Pick the render array for the row / field we are being asked to render,
    // and remove it from $this->build to free memory as we progress.
    if (isset($this->build[$row->index][$field_id])) {
      $build = $this->build[$row->index][$field_id];
      unset($this->build[$row->index][$field_id]);
    }
    elseif (isset($this->build[$row->index])) {

      // In the uncommon case where a field gets rendered several times
      // (typically through direct Views API calls), the pre-computed render
      // array was removed by the unset() above. We have to manually rebuild
      // the render array for the row.
      $build = $this
        ->buildFields([
        $row,
      ])[$row->index][$field_id];
    }
    else {

      // In case the relationship is optional, there might not be any fields
      // to render for this row.
      $build = [];
    }
  }
  else {

    // Same logic as above, in the case where we are being called for a whole
    // row.
    if (isset($this->build[$row->index])) {
      $build = $this->build[$row->index];
      unset($this->build[$row->index]);
    }
    else {
      $build = $this
        ->buildFields([
        $row,
      ])[$row->index];
    }
  }
  return $build;
}