so__transcript.inc in tripal_chado/includes/TripalFields/so__transcript/so__transcript.inc

class so__transcript_formatter extends ChadoFieldFormatter {
  // The default lable for this field.
  public static $default_label = 'Transcript';

  // The list of field types for which this formatter is appropriate.
  public static $field_types = array('so__transcript');

  /**
   *
   * @see TripalFieldFormatter::view()
   */
  public function view(&$element, $entity_type, $entity, $langcode, $items, $display) {

    // Get the settings
    $settings = $display['settings'];

    $headers = array('Transcript Name', 'Identifier', 'Type', 'Location');
    $rows = array();
    foreach ($items as $delta => $item) {

      if (!$item['value']) {
        continue;
      }
      $transcript = $item['value'];

      // Get the field values
      $feature_name = $transcript['schema:name'];
      $feature_uname = $transcript['data:0842'];
      $loc = $transcript['SO:0000735'];
      $type = $transcript['rdfs:type'];

      // Add a link i there is an entity.
      if (array_key_exists('entity', $item['value']) and $item['value']['entity']) {
        list($entity_type, $entity_id) = explode(':', $item['value']['entity']);
        $feature_name = l($feature_name, "bio_data/" . $entity_id, array('attributes' => array('target' => "_blank")));
      }
      $rows[] = array($feature_name, $feature_uname, $type, $loc);
    }
    $table = array(
      'header' => $headers,
      'rows' => $rows,
      'attributes' => array(
        'id' => 'tripal_feature-table-transcripts-object',
        'class' => 'tripal-data-table'
      ),
      'sticky' => FALSE,
      'caption' => "",
      'colgroups' => array(),
      'empty' => 'This feature has no transcripts',
    );
    $content = theme_table($table);

    // once we have our table array structure defined, we call Drupal's theme_table()
    // function to generate the table.
    if (count($items) > 0) {
      $element[0] = array(
        '#type' => 'markup',
        '#markup' => $content,
      );
    }
  }
}