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<?php
/**
* CakeValidationRule.
*
* Provides the Model validation logic.
*
* PHP versions 5
*
* CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
* Copyright 2005-2011, Cake Software Foundation, Inc. (http://cakefoundation.org)
*
* Licensed under The MIT License
* Redistributions of files must retain the above copyright notice.
*
* @copyright Copyright 2005-2011, Cake Software Foundation, Inc. (http://cakefoundation.org)
* @link http://cakephp.org CakePHP(tm) Project
* @package Cake.Model.Validator
* @since CakePHP(tm) v 2.2.0
* @license MIT License (http://www.opensource.org/licenses/mit-license.php)
*/
App::uses('ModelValidator', 'Model');
App::uses('CakeValidationSet', 'Model/Validator');
App::uses('Validation', 'Utility');
/**
* CakeValidationRule object.
*
* @package Cake.Model.Validator
* @link http://book.cakephp.org/2.0/en/data-validation.html
*/
class CakeValidationRule {
/**
* The 'valid' value
*
* @var mixed
*/
protected $_valid = true;
/**
* Create or Update transaction?
*
* @var boolean
*/
protected $_recordExists = false;
/**
* The parsed rule
*
* @var mixed
*/
protected $_rule = null;
/**
* The parsed rule parameters
*
* @var array
*/
protected $_ruleParams = array();
/**
* Holds passed in options
*
* @var array
*/
protected $_passedOptions = array();
/**
* The 'rule' key
*
* @var mixed
*/
public $rule = 'blank';
/**
* The 'required' key
*
* @var mixed
*/
public $required = null;
/**
* The 'allowEmpty' key
*
* @var boolean
*/
public $allowEmpty = false;
/**
* The 'on' key
*
* @var string
*/
public $on = null;
/**
* The 'last' key
*
* @var boolean
*/
public $last = true;
/**
* The 'message' key
*
* @var string
*/
public $message = null;
/**
* Constructor
*
* @param array $validator [optional] The validator properties
*/
public function __construct($validator = array()) {
$this->_addValidatorProps($validator);
}
/**
* Checks if the rule is valid
*
* @return boolean
*/
public function isValid() {
if (!$this->_valid || (is_string($this->_valid) && !empty($this->_valid))) {
return false;
}
return true;
}
/**
* Checks if the field is required by the 'required' value
*
* @return boolean
*/
public function isRequired() {
if (in_array($this->required, array('create', 'update'), true)) {
if ($this->required === 'create' && !$this->isUpdate() || $this->required === 'update' && $this->isUpdate()) {
return true;
} else {
return false;
}
}
return $this->required;
}
/**
* Checks if the field failed the required validation
*
* @param array $data data to check rule against
* @return boolean
*/
public function checkRequired($field, &$data) {
return (
(!isset($data[$field]) && $this->isRequired() === true) ||
(
isset($data[$field]) && (empty($data[$field]) &&
!is_numeric($data[$field])) && $this->allowEmpty === false
)
);
}
/**
* Checks if the allowEmpty key applies
*
* @param array $data data to check rule against
* @return boolean
*/
public function checkEmpty($field, &$data) {
if (empty($data[$field]) && $data[$field] != '0' && $this->allowEmpty === true) {
return true;
}
return false;
}
/**
* Checks if the Validation rule can be skipped
*
* @return boolean True if the ValidationRule can be skipped
*/
public function skip() {
if (!empty($this->on)) {
if ($this->on == 'create' && $this->isUpdate() || $this->on == 'update' && !$this->isUpdate()) {
return true;
}
}
return false;
}
/**
* Checks if the 'last' key is true
*
* @return boolean
*/
public function isLast() {
return (bool) $this->last;
}
/**
* Gets the validation error message
*
* @return string
*/
public function getValidationResult() {
return $this->_valid;
}
/**
* Gets an array with the rule properties
*
* @return array
*/
public function getPropertiesArray() {
$rule = $this->rule;
if (!is_string($rule)) {
unset($rule[0]);
}
return array(
'rule' => $rule,
'required' => $this->required,
'allowEmpty' => $this->allowEmpty,
'on' => $this->on,
'last' => $this->last,
'message' => $this->message
);
}
/**
* Sets the recordExists configuration value for this rule,
* ir refers to wheter the model record it is validating exists
* exists in the collection or not (create or update operation)
*
* If called with no parameters it will return whether this rule
* is configured for update operations or not.
*
* @return boolean
**/
public function isUpdate($exists = null) {
if ($exists === null) {
return $this->_recordExists;
}
return $this->_recordExists = $exists;
}
/**
* Dispatches the validation rule to the given validator method
*
* @return boolean True if the rule could be dispatched, false otherwise
*/
public function process($field, &$data, &$methods) {
$this->_parseRule($field, $data);
$validator = $this->getPropertiesArray();
$rule = strtolower($this->_rule);
if (isset($methods[$rule])) {
$this->_ruleParams[] = array_merge($validator, $this->_passedOptions);
$this->_ruleParams[0] = array($field => $this->_ruleParams[0]);
$this->_valid = call_user_func_array($methods[$rule], $this->_ruleParams);
} elseif (class_exists('Validation') && method_exists('Validation', $this->_rule)) {
$this->_valid = call_user_func_array(array('Validation', $this->_rule), $this->_ruleParams);
} elseif (is_string($validator['rule'])) {
$this->_valid = preg_match($this->_rule, $data[$field]);
} elseif (Configure::read('debug') > 0) {
trigger_error(__d('cake_dev', 'Could not find validation handler %s for %s', $this->_rule, $field), E_USER_WARNING);
return false;
}
return true;
}
public function getOptions($key) {
if (!isset($this->_passedOptions[$key])) {
return null;
}
return $this->_passedOptions[$key];
}
/**
* Sets the rule properties from the rule entry in validate
*
* @param array $validator [optional]
* @return void
*/
protected function _addValidatorProps($validator = array()) {
if (!is_array($validator)) {
$validator = array('rule' => $validator);
}
foreach ($validator as $key => $value) {
if (isset($value) || !empty($value)) {
if (in_array($key, array('rule', 'required', 'allowEmpty', 'on', 'message', 'last'))) {
$this->{$key} = $validator[$key];
} else {
$this->_passedOptions[$key] = $value;
}
}
}
}
/**
* Parses the rule and sets the rule and ruleParams
*
* @return void
*/
protected function _parseRule($field, &$data) {
if (is_array($this->rule)) {
$this->_rule = $this->rule[0];
$this->_ruleParams = array_merge(array($data[$field]), array_values(array_slice($this->rule, 1)));
} else {
$this->_rule = $this->rule;
$this->_ruleParams = array($data[$field]);
}
}
}
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