Implements hook_delete().

Delete data from drupal and chado databases when a node is deleted

Related topics

File

tripal_library/includes/tripal_library.chado_node.inc, line 446

Implements the library node content type

Code

function chado_library_delete(&$node) {

  $library_id = chado_get_id_from_nid('library', $node->nid);

  // if we don't have a library id for this node then this isn't a node of
  // type chado_library or the entry in the chado_library table was lost.
  if (!$library_id) {
    return;
  }

  // Remove data from {chado_library}, {node} and {node_revisions} tables of
  // drupal database
  $sql_del = "DELETE FROM {chado_library} WHERE nid = :nid AND vid = :vid";
  db_query($sql_del, array(':nid' => $node->nid, ':vid' => $node->vid));
  $sql_del = "DELETE FROM {node_revision} WHERE nid = :nid AND vid = :vid";
  db_query($sql_del, array(':nid' => $node->nid, ':vid' => $node->vid));
  $sql_del = "DELETE FROM {node} WHERE nid = :nid AND vid = :vid";
  db_query($sql_del, array(':nid' => $node->nid, ':vid' => $node->vid));

  // Remove data from library and libraryprop tables of chado database as well
  chado_query("DELETE FROM {libraryprop} WHERE library_id = :library_id", array(':library_id' => $library_id));
  chado_query("DELETE FROM {library} WHERE library_id = :library_id", array(':library_id' => $library_id));
}