_taxonomy_clean_field_cache

Versions

7

_taxonomy_clean_field_cache($term)

Helper function that clears field cache when terms are updated or deleted

Code

modules/taxonomy/taxonomy.module, line 1180

<?php
function _taxonomy_clean_field_cache($term) {
  $cids = array();

  // Determine object types that are not cacheable.
  $obj_types = array();
  foreach (entity_get_info() as $obj_type => $info) {
    if (isset($info['cacheable']) && !$info['cacheable']) {
      $obj_types[] = $obj_type;
    }
  }

  // Load info for all taxonomy term fields.
  $fields = field_read_fields(array('type' => 'taxonomy_term'));
  foreach ($fields as $field_name => $field) {

    // Assemble an array of vocabulary IDs that are used in this field.
    foreach ($field['settings']['allowed_values'] as $tree) {
      $vids[$tree['vid']] = $tree['vid'];
    }

    // Check this term's vocabulary against those used for the field's options.
    if (in_array($term->vid, $vids)) {
      $conditions = array(array('tid', $term->tid));
      if ($obj_types) {
        $conditions[] = array('type', $obj_types, 'NOT IN');
      }
      $results = field_attach_query($field['id'], $conditions, array('limit' => FIELD_QUERY_NO_LIMIT));
      foreach ($results as $obj_type => $objects) {
        foreach (array_keys($objects) as $id) {
          $cids[] = "field:$obj_type:$id";
        }
      }
    }
  }
  if ($cids) {
    cache_clear_all($cids, 'cache_field');
  }
}
?>

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