Form_validation: extra functions

application/helpers/hlp_common_helper.php

@@ -422,3 +422,41 @@ function isValidDate($dateString)
 		return false;
 	}
 }
+
+
+// ------------------------------------------------------------------------
+// Collection of utility functions for form validation purposes
+// ------------------------------------------------------------------------
+
+/**
+ * check if string can be converted to a date
+ */
+function is_valid_date($dateString)
+{
+	try
+	{
+		return (new DateTime($dateString)) !== false;
+	}
+	catch(Exception $e)
+	{
+		return false;
+	}
+}
+
+/**
+ * check if given permissions are met
+ */
+function has_write_permissions($value, $permissions = '')
+{
+	if (!$permissions)
+		$permissions = $value; // TODO(chris): ??
+	$permissions = explode(',', $permissions);
+
+	$CI =& get_instance();
+	$CI->load->library('PermissionLib');
+	return $CI->permissionlib->hasAtLeastOne(
+		$permissions,
+		'sometable',
+		'w'
+	);
+}

application/language/english/form_validation_lang.php

@@ -0,0 +1,42 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2019 - 2022, CodeIgniter Foundation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
+ * @copyright	Copyright (c) 2019 - 2022, CodeIgniter Foundation (https://codeigniter.com/)
+ * @license	https://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
+ * @filesource
+ */
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+$lang['form_validation_has_write_permissions']	= 'You have no rights to edit {field} field.';
+$lang['form_validation_is_valid_date']	= 'The date format is invalid or out of range.';