function crm_core_activity_crm_core_contact_delete in CRM Core 7

Implements hook_crm_core_contact_delete().

Adjusts Activities where contact is used in primary participants.

File

modules/crm_core_activity/crm_core_activity.module, line 456

Provides an entity for recording a contact's activities.

Code

function crm_core_activity_crm_core_contact_delete($crm_core_contact) {
  $query = new EntityFieldQuery();
  $results = $query
    ->entityCondition('entity_type', 'crm_core_activity')
    ->fieldCondition('field_activity_participants', 'target_id', $crm_core_contact->contact_id)
    ->execute();
  if (empty($results)) {

    // No related Activities.
    return;
  }

  // Load fully populated Activity objects to analyze/update.
  $activity_ids = array_keys($results['crm_core_activity']);
  $crm_core_activities = crm_core_activity_load_multiple($activity_ids);
  $activities_to_remove = array();
  foreach ($crm_core_activities as $crm_core_activity) {
    $wrapped_activity = entity_metadata_wrapper('crm_core_activity', $crm_core_activity);
    $participants = $wrapped_activity->field_activity_participants
      ->value(array(
      'identifier' => TRUE,
    ));

    // Remove Contact from participants array.
    $participants = array_diff($participants, array(
      $crm_core_contact->contact_id,
    ));
    if (empty($participants)) {

      // Last main participant was deleted, so we should kill entire activity.
      $activities_to_remove[] = $crm_core_activity->activity_id;
    }
    else {

      // Save Activity with renewed list.
      $wrapped_activity->field_activity_participants
        ->set($participants);
      crm_core_activity_save($crm_core_activity);
    }
  }
  if (!empty($activities_to_remove)) {
    watchdog('crm_core_activity', 'Deleted !count activities due to deleting contact id=%contact_id.', array(
      '!count' => count($activities_to_remove),
      '%contact_id' => $crm_core_contact->contact_id,
    ), WATCHDOG_INFO);
    crm_core_activity_delete_multiple($activities_to_remove);
  }
}