How to add dynamic field labels?

Question

I have a "medical records" content type which has a "medical process" field embedded (type=paragraphs bundle, number of values unlimited). In the paragraph bundle its has visit time, diagnosis, treatments, images, etc., so the paragraph can record every visit.

Everything works well, however, if we have a lot of paragraphs, in the view page, it looks ugly, so I would like to add some labels to each visit record enter image description here(paragraph), such as "the first visit", "the second visit","the % visit)...as I know the field group can only show a static label, token not available. Do anybody know how to realize this?

Answer 1

You can use hook_node_view to change the view before rendering.

/**
 *
 * @param type $node
 * @param type $view_mode
 * @param type $langcode
 * Implements hook_node_view().
 * To change paragraph title in node view.
 */
function MYMODULE_node_view($node, $view_mode = 'full', $langcode = NULL) {
  if ($node->type == 'CONTENT-TYPE-ID' && $view_mode == 'full') {
    foreach ($node->content['field_medical_records'] as $key => $paragraph_values) {
      if (is_numeric($key)) {
        $item_key = key($paragraph_values['entity']['paragraphs_item']);
        $node->content['field_medical_records'][$key]['entity']['paragraphs_item'][$item_key]['field_visit_time']['#title'] = numToOrdinalWord($item_key) . ' Visit';
      }
    }
  }
}

/**
 *
 * @param type $num
 * @return string
 * Implement to get Ordinal word from number.
 */
function numToOrdinalWord($num) {
  $first_word = array('eth', 'First', 'Second', 'Third', 'Fouth', 'Fifth', 'Sixth', 'Seventh', 'Eighth', 'Ninth', 'Tenth', 'Elevents', 'Twelfth', 'Thirteenth', 'Fourteenth', 'Fifteenth', 'Sixteenth', 'Seventeenth', 'Eighteenth', 'Nineteenth', 'Twentieth');
  $second_word = array('', '', 'Twenty', 'Thirty', 'Forty', 'Fifty');
  if ($num <= 20) {
    return $first_word[$num];
  }
  $first_num = substr($num, -1, 1);
  $second_num = substr($num, -2, 1);
  return $string = str_replace('y-eth', 'ieth', $second_word[$second_num] . '-' . $first_word[$first_num]);
}

You can change field names as per your requirement.