public function field_collection_handler_relationship::options_form in Field collection 7

Add a delta selector for multiple fields.

Overrides views_handler_relationship::options_form

File

views/field_collection_handler_relationship.inc, line 20

Provide relationship handler for field collection fields.

Class

field_collection_handler_relationship

@file Provide relationship handler for field collection 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.'),
    );
  }
}