function microdata_preprocess_field in Microdata 7

Implements MODULE_preprocess_HOOK().

Adds Microdata markup to the field wrapper.

File

./microdata.module, line 412

Code

function microdata_preprocess_field(&$variables) {

  // Skip preprocess for node Preview.
  if (isset($variables['element']['#object']->in_preview)) {
    return;
  }
  $element = $variables['element'];
  $field_name = $element['#field_name'];
  $mapping = microdata_get_mapping($element['#entity_type'], $element['#bundle']);

  // Make sure there is a mapping with a proper value type and formatter for
  // this field, otherwise skip this whole function and return to avoid errors.
  if (!isset($mapping[$field_name]) || empty($mapping[$field_name]['#value_type']) || !isset($element['#formatter']) || empty($element['#object']->microdata)) {
    return;
  }
  $field_mapping = $mapping[$field_name];
  $microdata = $element['#object']->microdata;

  // If this is a field with string values, then the $element will have a
  // single HTML id to wrap around the whole field.
  if (isset($element['#microdata_field_id'])) {
    $variables['content_attributes_array']['id'] = $element['#microdata_field_id'];
  }
  foreach ($variables['items'] as $delta => &$item) {

    // If this is a datetime or URL element, the field formatter must place the
    // item's property attributes. If this is an item, the itemprop is placed
    // on the item's meta tag. Otherwise, the itemprop can be placed on the
    // wrapping div using the item_attributes_array.
    if (isset($field_mapping['#value_type'])) {
      $is_datetime = $field_mapping['#value_type'] === 'datetime' ? TRUE : FALSE;
      $is_url = $field_mapping['#value_type'] === 'url' ? TRUE : FALSE;
      $is_item_reference = $field_mapping['#value_type'] === 'item_reference' ? microdata_is_item($element['#entity_type'], $element['#object'], $field_name, $delta) : FALSE;
      $place_microdata_wrapper = !($is_datetime || $is_url || $is_item_reference);
    }
    else {
      $place_microdata_wrapper = TRUE;
    }
    if ($place_microdata_wrapper) {
      $attributes = isset($variables['item_attributes_array'][$delta]) ? $variables['item_attributes_array'][$delta] : array();
      if (isset($microdata[$field_name]['#attributes'])) {
        $variables['item_attributes_array'][$delta] = array_merge($attributes, $microdata[$field_name]['#attributes']);
      }
      else {
        $variables['item_attributes_array'][$delta] = $attributes;
      }
    }

    // If this is a reference field, it will have a field ID for each field
    // item.
    if (isset($item['#microdata_field_id'])) {
      $variables['item_attributes_array'][$delta]['id'] = $item['#microdata_field_id'];
    }

    // Because core field formatters cannot be changed until D8, we use a
    // theme hack to place the itemprop (and itemtype for taxonomy).
    switch ($element['#formatter']) {
      case 'image':
        $item['#item']['attributes']['itemprop'] = $field_mapping['#itemprop'];
        break;
      case 'text_default':
        if ($field_mapping['#value_type'] != 'text') {
          $attributes = isset($variables['item_attributes_array'][$delta]) ? $variables['item_attributes_array'][$delta] : array();
          $variables['item_attributes_array'][$delta] = array_merge($attributes, $microdata[$field_name]['value']['#attributes']);
        }
        break;
      case 'text_trimmed':
      case 'text_summary_or_trimmed':
        $attributes = isset($variables['item_attributes_array'][$delta]) ? $variables['item_attributes_array'][$delta] : array();
        if (is_array($microdata[$field_name]['#attributes']) && isset($microdata[$field_name]['summary']['#attributes'])) {
          $variables['item_attributes_array'][$delta] = array_merge($attributes, $microdata[$field_name]['summary']['#attributes']);
        }
        break;
    }
  }
}