public function EntityField::buildGroupByForm in Drupal 8

Same name and namespace in other branches

1. 9 core/modules/views/src/Plugin/views/field/EntityField.php \Drupal\views\Plugin\views\field\EntityField::buildGroupByForm()

Extend the groupby form with group columns.

Overrides HandlerBase::buildGroupByForm

File

core/modules/views/src/Plugin/views/field/EntityField.php, line 660

Class

EntityField

A field that displays entity field data.

Namespace

Drupal\views\Plugin\views\field

Code

public function buildGroupByForm(&$form, FormStateInterface $form_state) {
  parent::buildGroupByForm($form, $form_state);

  // With "field API" fields, the column target of the grouping function
  // and any additional grouping columns must be specified.
  $field_columns = array_keys($this
    ->getFieldDefinition()
    ->getColumns());
  $group_columns = [
    'entity_id' => $this
      ->t('Entity ID'),
  ] + array_map('ucfirst', array_combine($field_columns, $field_columns));
  $form['group_column'] = [
    '#type' => 'select',
    '#title' => $this
      ->t('Group column'),
    '#default_value' => $this->options['group_column'],
    '#description' => $this
      ->t('Select the column of this field to apply the grouping function selected above.'),
    '#options' => $group_columns,
  ];
  $options = [
    'bundle' => 'Bundle',
    'language' => 'Language',
    'entity_type' => 'Entity_type',
  ];

  // Add on defined fields, noting that they're prefixed with the field name.
  $form['group_columns'] = [
    '#type' => 'checkboxes',
    '#title' => $this
      ->t('Group columns (additional)'),
    '#default_value' => $this->options['group_columns'],
    '#description' => $this
      ->t('Select any additional columns of this field to include in the query and to group on.'),
    '#options' => $options + $group_columns,
  ];
}