function advpoll_uninstall in Advanced Poll 7.3

Same name and namespace in other branches

1. 8 advpoll.install \advpoll_uninstall()
2. 5 advpoll.install \advpoll_uninstall()
3. 6.3 advpoll.install \advpoll_uninstall()
4. 6 advpoll.install \advpoll_uninstall()
5. 6.2 advpoll.install \advpoll_uninstall()
6. 7 advpoll.install \advpoll_uninstall()
7. 7.2 advpoll.install \advpoll_uninstall()

Implements hook_uninstall().

File

./advpoll.install, line 104

Install file for Advanced Poll.

Code

function advpoll_uninstall() {

  // Gather all the example content that might have been created while this
  // module was enabled.  Simple selects still use db_query().
  // http://api.drupal.org/api/function/db_query/7
  $sql = 'SELECT nid FROM {node} n WHERE n.type = :type';
  $result = db_query($sql, array(
    ':type' => 'advpoll',
  ));
  $nid = array();
  foreach ($result as $row) {
    $nid[] = $row->nid;
  }
  if ($nid) {
    db_delete('votingapi_vote')
      ->condition('entity_id', $nid, 'IN')
      ->condition('entity_type', 'node')
      ->execute();

    /* Delete all the nodes at once
     * http://api.drupal.org/api/function/node_delete_multiple/7
     */
    node_delete_multiple($nid);
  }

  /* Loop over each of the fields defined by this module and delete
   * all instances of the field, their data, and the field itself.
   * http://api.drupal.org/api/function/field_delete_field/7
   */
  foreach (array_keys(_advpoll_installed_fields()) as $field) {
    field_delete_field($field);
  }

  /* Loop over any remaining field instances attached to the node_example
   * content type (such as the body field) and delete them individually.
   * http://api.drupal.org/api/function/field_delete_field/7
   */
  $instances = field_info_instances('node', 'advpoll');
  foreach ($instances as $instance) {
    field_delete_instance($instance);
  }

  /* Delete our content type
   * http://api.drupal.org/api/function/node_type_delete/7
   */
  node_type_delete('advpoll');

  /* Purge all field infromation
   * http://api.drupal.org/api/function/field_purge_batch/7
   */
  field_purge_batch(1000);

  // Delete precision and rounding method variables.
  variable_del('advpoll_percentage_precision');
  variable_del('advpoll_percentage_rounding_method');
}