Computer_Item::cleanDBonPurge PHP Method

    function cleanDBonPurge()
    {
        global $CFG_GLPI;
        if (!isset($this->input['_no_auto_action'])) {
            //Get the computer name
            $computer = new Computer();
            $computer->getFromDB($this->fields['computers_id']);
            //Get device fields
            if ($device = getItemForItemtype($this->fields['itemtype'])) {
                if ($device->getFromDB($this->fields['items_id'])) {
                    if (!$device->getField('is_global')) {
                        $updates = array();
                        if ($CFG_GLPI["is_location_autoclean"] && $device->isField('locations_id')) {
                            $updates['locations_id'] = 0;
                        }
                        if ($CFG_GLPI["is_user_autoclean"] && $device->isField('users_id')) {
                            $updates['users_id'] = 0;
                        }
                        if ($CFG_GLPI["is_group_autoclean"] && $device->isField('groups_id')) {
                            $updates['groups_id'] = 0;
                        }
                        if ($CFG_GLPI["is_contact_autoclean"] && $device->isField('contact')) {
                            $updates['contact'] = "";
                        }
                        if ($CFG_GLPI["is_contact_autoclean"] && $device->isField('contact_num')) {
                            $updates['contact_num'] = "";
                        }
                        if ($CFG_GLPI["state_autoclean_mode"] < 0 && $device->isField('states_id')) {
                            $updates['states_id'] = 0;
                        }
                        if ($CFG_GLPI["state_autoclean_mode"] > 0 && $device->isField('states_id') && $device->getField('states_id') != $CFG_GLPI["state_autoclean_mode"]) {
                            $updates['states_id'] = $CFG_GLPI["state_autoclean_mode"];
                        }
                        if (count($updates)) {
                            $updates['id'] = $this->fields['items_id'];
                            $device->update($updates);
                        }
                    }
                }
            }
        }
    }