public function references_handler_relationship::options_form in References 7.2

Add a delta selector for multiple fields.

@codingStandardsIgnoreStart

Overrides views_handler_relationship::options_form

File

views/references_handler_relationship.inc, line 31

Provide relationship handler for reference fields.

Class

references_handler_relationship

Default class for handler relationship.

Code

public function options_form(&$form, &$form_state) {

  // @codingStandardsIgnoreEnd
  parent::options_form($form, $form_state);
  $field = field_info_field($this->definition['field_name']);

  // Only add the delta selector if the field is multiple.
  if ($field['cardinality']) {
    $max_delta = $field['cardinality'] == FIELD_CARDINALITY_UNLIMITED ? 10 : $field['cardinality'];
    $options = array(
      '-1' => t('All'),
    );
    for ($i = 0; $i < $max_delta; $i++) {
      $options[$i] = $i + 1;
    }
    $form['delta'] = array(
      '#type' => 'select',
      '#options' => $options,
      '#default_value' => $this->options['delta'],
      '#title' => t('Delta'),
      '#description' => t('The delta allows you to select which item in a multiple value field to key the relationship off of. Select "1" to use the first item, "2" for the second item, and so on. If you select "All", each item in the field will create a new row, which may appear to cause duplicates.'),
    );
  }
}