public function paragraphs_handler_relationship::options_form in Paragraphs 7

Add a delta selector for multiple fields.

Parameters

$form: The form structure array.

$form_state: An associative array containing the current state of the form.

Overrides views_handler_relationship::options_form

File

views/paragraphs_handler_relationship.inc, line 29

Class

paragraphs_handler_relationship

Provide relationship handler for paragraphs fields.

Code

public function options_form(&$form, &$form_state) {
  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.'),
    );
  }
}