function _nodereferrer_manage_cache in NodeReferrer 7

Helper function for Node API Hooks.

4 calls to _nodereferrer_manage_cache()

nodereferrer_node_delete in ./nodereferrer.module

Implementation of hook_node_delete().

nodereferrer_node_insert in ./nodereferrer.module

Implementation of hook_node_insert().

nodereferrer_node_prepare in ./nodereferrer.module

Implementation of hook_node_prepare().

nodereferrer_node_update in ./nodereferrer.module

Implementation of hook_node_update().

File

./nodereferrer.module, line 862

Defines a field type for backlinking referencing nodes.

Code

function _nodereferrer_manage_cache($node) {

  // Clear content cache to help maintain proper display of nodes.
  $nids = array();
  $type = field_info_instances('node', $node->type);
  if (!empty($type)) {
    foreach ($type as $field => $instance) {
      $fieldinfo = field_info_field($field);
      if ($fieldinfo['type'] == 'node_reference') {
        $node_field = isset($node->{$fieldinfo}['field_name']) ? $node->{$fieldinfo}['field_name'] : array();
        if (isset($node_field['und'])) {
          foreach ($node_field['und'] as $delta => $item) {

            // Add referenced nodes to nids. This will clean up nodereferrer fields
            // when the referencing node is updated.
            $nids[$item['nid']] = $item['nid'];
          }
        }
      }
    }
  }

  // Clear Content cache for nodes that reference the node that is being updated.
  // This will keep nodereference fields up to date when referred nodes are
  // updated. @note this currenlty doesn't work all that well since nodereference
  // doesn't respect publishing states or access control.
  if (isset($node->nid)) {
    $referrers = nodereferrer_referrers($node->nid);
    $referrer_nids = array_keys($referrers);
    $nids = array_merge($nids, $referrer_nids);
  }
  foreach ($nids as $nid) {
    $printnode = node_load($nid);
    $cid = "field:node:{$nid}";

    // define a table to delete from or else this complains
    cache_clear_all($cid, 'cache_field', TRUE);
  }
}