function farm_livestock_preprocess_field in farmOS 7

Implements hook_preprocess_field().

File

modules/farm/farm_livestock/farm_livestock.module, line 290

Code

function farm_livestock_preprocess_field(&$variables, $hook) {

  // Only act on field_farm_date on animal assets.
  $element = $variables['element'];
  if (empty($element['#field_name']) || $element['#field_name'] != 'field_farm_date') {
    return;
  }
  if (!($element['#entity_type'] == 'farm_asset' && $element['#bundle'] == 'animal')) {
    return;
  }

  // If the field is blank, bail.
  if (empty($element['#items'][0]['value']) || empty($variables['items'][0]['#markup'])) {
    return;
  }

  // Get the asset ID.
  if (empty($element['#object']->id)) {
    return;
  }
  $asset_id = $element['#object']->id;

  // Search for this asset's birth log.
  $query = new EntityFieldQuery();
  $query
    ->entityCondition('entity_type', 'log')
    ->entityCondition('bundle', 'farm_birth')
    ->fieldCondition('field_farm_asset', 'target_id', $asset_id);
  $result = $query
    ->execute();

  // Load only the first log.
  $log = NULL;
  if (isset($result['log'])) {
    $log_ids = array_keys($result['log']);
    $log_id = reset($log_ids);
    $log = log_load($log_id);
  }

  // If a log exists, link the birth date field to it.
  if (!empty($log)) {
    $birthdate = $variables['items'][0]['#markup'];
    $log_uri = entity_uri('log', $log);
    $variables['items'][0]['#markup'] = '<a href="' . url($log_uri['path']) . '">' . $birthdate . '</a>';
  }
}