566 lines
19 KiB
PHP
566 lines
19 KiB
PHP
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<?php
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/**
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* $Id$
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*
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* KnowledgeTree Community Edition
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* Document Management Made Simple
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* Copyright (C) 2008, 2009 KnowledgeTree Inc.
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*
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*
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* This program is free software; you can redistribute it and/or modify it under
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* the terms of the GNU General Public License version 3 as published by the
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* Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* You can contact KnowledgeTree Inc., PO Box 7775 #87847, San Francisco,
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* California 94120-7775, or email info@knowledgetree.com.
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*
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* The interactive user interfaces in modified source and object code versions
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* of this program must display Appropriate Legal Notices, as required under
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* Section 5 of the GNU General Public License version 3.
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*
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* In accordance with Section 7(b) of the GNU General Public License version 3,
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* these Appropriate Legal Notices must retain the display of the "Powered by
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* KnowledgeTree" logo and retain the original copyright notice. If the display of the
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* logo is not reasonably feasible for technical reasons, the Appropriate Legal Notices
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* must display the words "Powered by KnowledgeTree" and retain the original
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* copyright notice.
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* Contributor( s): ______________________________________
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*/
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/* handle basic machinery for form handling, including working with
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* widgets, sessions and validation
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*/
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require_once(KT_LIB_DIR . "/widgets/widgetfactory.inc.php");
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require_once(KT_LIB_DIR . "/validation/validatorfactory.inc.php");
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class KTForm {
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// serialisation info
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var $_kt_form_name;
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var $sIdentifier; // a simple identifier.
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// visual options
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var $sLabel;
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var $sDescription;
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// core storage options
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var $_widgets; // what widgets get stored
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var $_validators; // validators
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var $_submitlabel; // what is the "submit" button called
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var $_action; // where does the success message go
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var $_event; // where does the success message go
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var $_extraargs; // various extra arguments
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var $_failaction; // should this error out, which action handles it
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var $_failurl; // if we don't have a failaction, try this url
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var $_cancelurl; // where do we get redirected if we cancel?
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var $bCancel;
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var $_context;
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var $_errors;
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var $_method;
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var $_noframe;
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var $_oVF;
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var $_oWF;
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// we don't use a constructor here, rather use aOptions
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function setOptions($aOptions) {
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// we grab the "context" dispatcher(ish) object here
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$context =& KTUtil::arrayGet($aOptions, 'context');
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$this->_context =& $context;
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// form identifier (namespace)
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$this->sIdentifier = KTUtil::arrayGet($aOptions, 'identifier','kt.default');
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// form name
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$this->_kt_form_name = KTUtil::arrayGet($aOptions, '_kt_form_name',
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$this->generateFormName($this->sIdentifier), false);
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// form labelling
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$this->sLabel = KTUtil::arrayGet($aOptions, 'label');
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$this->sDescription = KTUtil::arrayGet($aOptions, 'description');
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// actions
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$this->_action = KTUtil::arrayGet($aOptions, 'action');
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$qs = KTUtil::arrayGet($aOptions, 'actionparams','');
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$this->_enctype = KTUtil::arrayGet($aOptions, 'encoding');
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if (empty($this->_enctype)) {
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if (KTUtil::arrayGet($aOptions, 'file_upload', false)) {
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$this->_enctype="multipart/form-data";
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}
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}
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$targeturl = KTUtil::arrayGet($aOptions, 'targeturl', false);
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if($targeturl === false) {
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$this->_actionurl = KTUtil::addQueryStringSelf($qs);
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} else {
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$this->_actionurl = KTUtil::addQueryString($targeturl, $qs);
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}
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$this->_failaction = KTUtil::arrayGet($aOptions, 'fail_action');
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$this->_failurl = KTUtil::arrayGet($aOptions, 'fail_url');
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$this->_submitlabel = KTUtil::arrayGet($aOptions, 'submit_label',
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_kt('Submit'));
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$this->_event = KTUtil::arrayGet($aOptions, 'event');
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if (empty($this->_event)) {
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if (!is_null($context)) {
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$this->_event = $context->event_var;
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} else {
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$this->_event = "action";
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}
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}
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$this->_noframe = KTUtil::arrayGet($aOptions, 'noframe', false);
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// cancel
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// there are a few options here:
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// 1. cancel_action
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// 2. cancel_url
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$cancel_action = KTUtil::arrayGet($aOptions, 'cancel_action');
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$cancel_url = KTUtil::arrayGet($aOptions, 'cancel_url');
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if (!empty($cancel_action)) {
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$this->bCancel = true;
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// there are two cases here - if we have a context, we can
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// use the meldPersistQuery to create the url.
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if (!is_null($context)) {
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$sQuery = $context->meldPersistQuery("",
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$cancel_action);
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$this->_cancelurl =
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KTUtil::addQueryString($_SERVER['PHP_SELF'], $sQuery);
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} else {
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// give it a try using addQSSelf
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$this->_cancelurl = KTUtil::addQueryStringSelf(
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sprintf('%s=%s', $this->_event, $cancel_action));
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}
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} else if (!empty($cancel_url)) {
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$this->bCancel = true;
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$this->_cancelurl = $cancel_url;
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} else {
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$this->bCancel = false;
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}
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// FIXME process extra arguments more intelligently
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$default_args = array();
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if (!is_null($this->_context)) {
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$default_args = $this->_context->meldPersistQuery("","",true);
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}
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$this->_extraargs = KTUtil::arrayGet($aOptions,
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'extraargs', $default_args);
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// method
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$this->_method = KTUtil::arrayGet($aOptions, 'method', 'post');
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$this->_extraargs['postReceived'] = 1;
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}
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function getWidget(&$aInfo) {
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if (is_null($this->_oWF)) {
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$this->_oWF =& KTWidgetFactory::getSingleton();
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}
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if (is_null($aInfo)) {
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$widget = null;
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} else if (is_object($aInfo)) {
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// assume this is a fully configured object
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$widget =& $aInfo;
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} else {
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$namespaceOrObject = $aInfo[0];
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$config = (array) $aInfo[1];
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$widget =& $this->_oWF->get($namespaceOrObject, $config);
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}
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return $widget;
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}
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function getValidator($aInfo) {
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if (is_null($this->_oVF)) {
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$this->_oVF =& KTValidatorFactory::getSingleton();
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}
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$validator = null;
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// we don't want to expose the factory stuff to the user - its an
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// arbitrary distinction to the user. Good point from NBM ;)
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if (is_null($aInfo)) {
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$validator = null;
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} else if (is_object($aInfo)) {
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// assume this is a fully configured object
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$validator =& $aInfo;
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} else {
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$namespaceOrObject = $aInfo[0];
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$config = (array) $aInfo[1];
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$validator =& $this->_oVF->get($namespaceOrObject, $config);
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}
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return $validator;
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}
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// set the "form widgets" that will be used.
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// these are pushed into the "data" component
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function setWidgets($aWidgets) {
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$this->_widgets = array();
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if (is_null($this->_oWF)) {
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$this->_oWF =& KTWidgetFactory::getSingleton();
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}
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$this->addWidgets($aWidgets);
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}
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function addWidgets($aWidgets) {
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foreach ($aWidgets as $aInfo) {
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$widget = $this->getWidget($aInfo);
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if (is_null($widget)) {
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continue;
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} else {
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$this->_widgets[] = $widget;
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}
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}
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}
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function setValidators($aValidators) {
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$this->_validators = array();
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if (is_null($this->_oVF)) {
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$this->_oVF =& KTValidatorFactory::getSingleton();
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}
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$this->addValidators($aValidators);
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}
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function addValidators($aValidators) {
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// we don't want to expose the factory stuff to the user - its an
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// arbitrary distinction to the user. Good point from NBM ;)
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foreach ($aValidators as $aInfo) {
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$validator = $this->getValidator($aInfo);
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if (is_null($validator)) {
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continue;
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} else {
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$this->_validators[] = $validator;
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}
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}
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}
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function addValidator($aInfo) {
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$validator = $this->getValidator($aInfo);
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if (is_null($validator)) {
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return false;
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} else {
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$this->_validators[] =& $validator;
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}
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}
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function addWidget($aInfo) {
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$widget = $this->getWidget($aInfo);
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if (is_null($widget)) {
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return false;
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} else {
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$this->_widgets[] =& $widget;
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}
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}
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function addInitializedWidget($oWidget) {
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$this->_widgets[] = $oWidget;
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}
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function render() {
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$sWidgets = $this->renderWidgets();
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$sButtons = $this->renderButtons();
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return $this->renderContaining($sWidgets . ' ' . $sButtons);
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}
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function renderPage($sTitle = null, $sDescription = null) {
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if ($sTitle == null) {
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$sTitle = $this->sLabel;
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}
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$pageval = $this->render();
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$sHelpText = '';
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if (!is_null($sDescription)) {
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$sHelpText = sprintf('<p class="descriptiveText">%s</p>', $sDescription);
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}
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return sprintf('<h2>%s</h2> %s %s', sanitizeForHTML($sTitle), $sHelpText, $pageval);
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}
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function getErrors() {
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$aErrors = array();
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$old_data = KTUtil::arrayGet((array) $_SESSION['_kt_old_data'],
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$this->_kt_form_name, array());
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if (KTUtil::arrayGet($old_data, 'identifier') == $this->sIdentifier) {
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$aErrors = (array) unserialize(KTUtil::arrayGet($old_data, 'errors'));
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}
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return $aErrors;
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}
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function renderWidgets() {
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if (empty($this->_widgets)) {
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return ' ';
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}
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// do this all at the *last* possible moment
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// now we need to do two things:
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//
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// 1. inform each "widget" that it needs to wrap itself inside
|
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// the "data" var
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// 2. replace the widget's default values with the ones from the
|
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// failed request, as appropriate.
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$bUseOld = false;
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$aOldData = array();
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$aErrors = array();
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$old_data = KTUtil::arrayGet((array) $_SESSION['_kt_old_data'],
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$this->_kt_form_name, array());
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if (KTUtil::arrayGet($old_data, 'identifier') == $this->sIdentifier) {
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$bUseOld = true;
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$aStoredData = (array) unserialize(KTUtil::arrayGet($old_data, 'data'));
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$aOldData = array();
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foreach ($aStoredData as $k => $v) {
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$aOldData[$k] = unserialize($v);
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}
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$aErrors = (array) unserialize(KTUtil::arrayGet($old_data, 'errors'));
|
||
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}
|
||
|
|
|
||
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foreach ($this->_widgets as $k => $v) {
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if (PEAR::isError($v)) {
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continue; // error, handle it in render.
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}
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$widget =& $this->_widgets[$k]; // reference needed since we're changing them
|
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$widget->wrapName('data');
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if ($bUseOld) {
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$widget->setDefault(KTUtil::arrayGet($aOldData, $widget->getBasename(),
|
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|
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$widget->getDefault(), false));
|
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$widget->setErrors(KTUtil::arrayGet($aErrors, $widget->getBasename()));
|
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}
|
||
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}
|
||
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|
||
|
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// too much overhead by half to use a template here
|
||
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// so we do it the "old fashioned" way.
|
||
|
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$rendered = array();
|
||
|
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|
||
|
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foreach ($this->_widgets as $v) {
|
||
|
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if (PEAR::isError($v)) {
|
||
|
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$rendered[] = sprintf(_kt('<div class="ktError"><p>Unable to show widget — %s</p></div>'), $v->getMessage());
|
||
|
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} else {
|
||
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$rendered[] = $v->render();
|
||
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}
|
||
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}
|
||
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|
||
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return implode(' ', $rendered);
|
||
|
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}
|
||
|
|
|
||
|
|
function renderButtons() {
|
||
|
|
$oKTTemplating =& KTTemplating::getSingleton();
|
||
|
|
$oTemplate = $oKTTemplating->loadTemplate('ktcore/forms/buttons');
|
||
|
|
|
||
|
|
// now do the render.
|
||
|
|
$oTemplate->setData(array(
|
||
|
|
'context' => &$this,
|
||
|
|
));
|
||
|
|
|
||
|
|
return $oTemplate->render();
|
||
|
|
}
|
||
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|
||
|
|
function renderContaining() {
|
||
|
|
|
||
|
|
$args = func_get_args();
|
||
|
|
$sInner = implode(' ', $args);
|
||
|
|
|
||
|
|
$oKTTemplating =& KTTemplating::getSingleton();
|
||
|
|
$oTemplate = $oKTTemplating->loadTemplate('ktcore/forms/outerform');
|
||
|
|
|
||
|
|
// remove inner "action" var from extraargs
|
||
|
|
// if its there at all.
|
||
|
|
unset($this->_extraargs[$this->_event]);
|
||
|
|
$this->_extraargs['_kt_form_name'] = $this->_kt_form_name;
|
||
|
|
|
||
|
|
// now do the render.
|
||
|
|
$oTemplate->setData(array(
|
||
|
|
'context' => &$this,
|
||
|
|
'inner' => $sInner,
|
||
|
|
));
|
||
|
|
|
||
|
|
return $oTemplate->render();
|
||
|
|
}
|
||
|
|
|
||
|
|
function generateFormName($sIdentifier = null) {
|
||
|
|
if (!is_null($sIdentifier)) {
|
||
|
|
// try use the existing one from the request.
|
||
|
|
$existing = KTUtil::arrayGet($_REQUEST, '_kt_form_name');
|
||
|
|
|
||
|
|
if (!empty($existing)) {
|
||
|
|
// check that its the same form
|
||
|
|
$data = KTUtil::arrayGet($_SESSION['_kt_old_data'], $existing);
|
||
|
|
if ($data['identifier'] == $sIdentifier) {
|
||
|
|
return $existing;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return KTUtil::randomString(32); // unique 32 char string
|
||
|
|
}
|
||
|
|
|
||
|
|
function validate() {
|
||
|
|
// we first ask each widget to pull its data out.
|
||
|
|
// while we do that, we create the storage set for the session
|
||
|
|
// that widgets can call on later.
|
||
|
|
|
||
|
|
$raw_data = KTUtil::arrayGet($_REQUEST, 'data');
|
||
|
|
$processed_data = array();
|
||
|
|
foreach ($this->_widgets as $oWidget) {
|
||
|
|
if (PEAR::isError($oWidget)) {
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
// widgets are expected to place their data in the "basename"
|
||
|
|
// entry in the processed data area
|
||
|
|
//
|
||
|
|
// they should also be able to reconstruct their inputs from this
|
||
|
|
// since its what they get later.
|
||
|
|
|
||
|
|
$res = $oWidget->process($raw_data);
|
||
|
|
$processed_data = kt_array_merge($processed_data, $res);
|
||
|
|
}
|
||
|
|
|
||
|
|
// before we validate ANYTHING we store data into the session
|
||
|
|
|
||
|
|
$store_data = array(); // we only want to store serialized values here
|
||
|
|
foreach ($processed_data as $k => $v) {
|
||
|
|
$store_data[$k] = serialize($v);
|
||
|
|
}
|
||
|
|
|
||
|
|
$_SESSION['_kt_old_data'][$this->_kt_form_name]['data'] = serialize($store_data);
|
||
|
|
$_SESSION['_kt_old_data'][$this->_kt_form_name]['identifier'] =
|
||
|
|
$this->sIdentifier;
|
||
|
|
$_SESSION['_kt_old_data'][$this->_kt_form_name]['created'] =
|
||
|
|
getCurrentDateTime();
|
||
|
|
|
||
|
|
$results = array();
|
||
|
|
$errors = array();
|
||
|
|
|
||
|
|
// some things can be checked by the actual widgets involved. These
|
||
|
|
// are obvious (e.g. required) and shouldn't require the developer to
|
||
|
|
// think about them.
|
||
|
|
//
|
||
|
|
// to accomplish this, we call each widget's "getValidators" method.
|
||
|
|
//
|
||
|
|
// note that autovalidation can be turned off for a widget by passing
|
||
|
|
// "autovalidate" => "false" in the widget's config.
|
||
|
|
|
||
|
|
$extra_validators = array();
|
||
|
|
foreach ($this->_widgets as $oWidget) {
|
||
|
|
if (PEAR::isError($oWidget)) {
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
$res = $oWidget->getValidators();
|
||
|
|
|
||
|
|
if (!is_null($res)) {
|
||
|
|
if (is_array($res)) {
|
||
|
|
$extra_validators = kt_array_merge($extra_validators, $res);
|
||
|
|
} else {
|
||
|
|
$extra_validators[] = $res;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
$validators = kt_array_merge($extra_validators, $this->_validators);
|
||
|
|
|
||
|
|
foreach ($validators as $oValidator) {
|
||
|
|
if (PEAR::isError($oValidator)) {
|
||
|
|
// don't bother with broken validators, but warn the user/dev
|
||
|
|
$errors['_kt_global'][] = $oValidator->getMessage();
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
$res = $oValidator->validate($processed_data);
|
||
|
|
|
||
|
|
// results comes out with a set of names and values.
|
||
|
|
// these *shouldn't* overlap, so just merge them
|
||
|
|
$extra_results = KTUtil::arrayGet($res, 'results', array());
|
||
|
|
$results = kt_array_merge($results, $extra_results);
|
||
|
|
|
||
|
|
// errors *can* overlap
|
||
|
|
// the format is:
|
||
|
|
// basename => array(errors)
|
||
|
|
// so that a given field can have multiple errors
|
||
|
|
// from multiple validators
|
||
|
|
//
|
||
|
|
// there is also a "global" error notice stored against the var
|
||
|
|
// _kt_global
|
||
|
|
$extra_errors = KTUtil::arrayGet($res, 'errors', array());
|
||
|
|
foreach ($extra_errors as $varname => $aErrors) {
|
||
|
|
if (is_string($aErrors)) {
|
||
|
|
$errors[$varname][] = $aErrors;
|
||
|
|
} else {
|
||
|
|
$errors[$varname] = kt_array_merge($errors[$varname], $aErrors);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
$this->_errors = $errors; // store for later use without unserialising
|
||
|
|
if (!empty($errors)) {
|
||
|
|
$_SESSION['_kt_old_data'][$this->_kt_form_name]['errors'] =
|
||
|
|
serialize($errors);
|
||
|
|
}
|
||
|
|
|
||
|
|
//var_dump($errors); exit(0);
|
||
|
|
|
||
|
|
return array(
|
||
|
|
'errors' => $errors,
|
||
|
|
'results' => $results,
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
function handleError($sGlobalError = null, $aSimplerErrors = null) {
|
||
|
|
if (!is_null($sGlobalError)) {
|
||
|
|
$this->_errors['_kt_global'][] = $sGlobalError;
|
||
|
|
}
|
||
|
|
if (!is_null($aSimplerErrors)) {
|
||
|
|
foreach ($aSimplerErrors as $k => $v) {
|
||
|
|
$this->_errors[$k] = kt_array_merge($this->_errors[$k], $v);
|
||
|
|
}
|
||
|
|
// since we've changed them, update the stored version
|
||
|
|
$_SESSION['_kt_old_data'][$this->_kt_form_name]['errors'] =
|
||
|
|
serialize($this->_errors);
|
||
|
|
}
|
||
|
|
if (is_array($this->_errors)) {
|
||
|
|
$global_errors = KTUtil::arrayGet($this->_errors, '_kt_global', array());
|
||
|
|
$_SESSION['KTErrorMessage'] = kt_array_merge($_SESSION['KTErrorMessage'], $global_errors);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!empty($this->_failaction) && !is_null($this->_context)) {
|
||
|
|
$this->_context->errorRedirectTo($this->_failaction,
|
||
|
|
_kt("Please correct the errors indicated."),
|
||
|
|
sprintf("_kt_form_name=%s",$this->_kt_form_name));
|
||
|
|
exit(0);
|
||
|
|
} else if ($this->_failurl){
|
||
|
|
redirect(KTUtil::addQueryString($this->_failurl,
|
||
|
|
sprintf("_kt_form_name=%s",$this->_kt_form_name)));
|
||
|
|
exit(0);
|
||
|
|
} else {
|
||
|
|
return '<div class="ktError"><p>' . _kt("An error occured, and no error handlers were configured.") . '</p></div>';
|
||
|
|
exit(0);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
?>
|