1: <?php
 2: /*****************************************************************************************
 3:  * X2Engine Open Source Edition is a customer relationship management program developed by
 4:  * X2Engine, Inc. Copyright (C) 2011-2016 X2Engine Inc.
 5:  * 
 6:  * This program is free software; you can redistribute it and/or modify it under
 7:  * the terms of the GNU Affero General Public License version 3 as published by the
 8:  * Free Software Foundation with the addition of the following permission added
 9:  * to Section 15 as permitted in Section 7(a): FOR ANY PART OF THE COVERED WORK
10:  * IN WHICH THE COPYRIGHT IS OWNED BY X2ENGINE, X2ENGINE DISCLAIMS THE WARRANTY
11:  * OF NON INFRINGEMENT OF THIRD PARTY RIGHTS.
12:  * 
13:  * This program is distributed in the hope that it will be useful, but WITHOUT
14:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
15:  * FOR A PARTICULAR PURPOSE.  See the GNU Affero General Public License for more
16:  * details.
17:  * 
18:  * You should have received a copy of the GNU Affero General Public License along with
19:  * this program; if not, see http://www.gnu.org/licenses or write to the Free
20:  * Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
21:  * 02110-1301 USA.
22:  * 
23:  * You can contact X2Engine, Inc. P.O. Box 66752, Scotts Valley,
24:  * California 95067, USA. or at email address contact@x2engine.com.
25:  * 
26:  * The interactive user interfaces in modified source and object code versions
27:  * of this program must display Appropriate Legal Notices, as required under
28:  * Section 5 of the GNU Affero General Public License version 3.
29:  * 
30:  * In accordance with Section 7(b) of the GNU Affero General Public License version 3,
31:  * these Appropriate Legal Notices must retain the display of the "Powered by
32:  * X2Engine" logo. If the display of the logo is not reasonably feasible for
33:  * technical reasons, the Appropriate Legal Notices must display the words
34:  * "Powered by X2Engine".
35:  *****************************************************************************************/
36: 
37: class X2ModelUniqueIndexValidator extends X2Validator {
38:     protected function validateValue (CModel $object, $value, $attribute) {
39:         // Unsetting a value in the form causes the empty string to be passed in the POST data,
40:         // which causes the unique constraint to be violated. Since it should be possible to 
41:         // unset unique, non-required fields through the UI, we convert empty string values to null.
42:         if ($value === '') $object->$attribute = null;
43:     } 
44: }
45: