351 lines
7.8 KiB
PHP
351 lines
7.8 KiB
PHP
<?php
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/**
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* CakeValidationRule.
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*
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* Provides the Model validation logic.
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*
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* CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
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* Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
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*
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* Licensed under The MIT License
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* For full copyright and license information, please see the LICENSE.txt
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* Redistributions of files must retain the above copyright notice.
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*
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* @copyright Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
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* @link http://cakephp.org CakePHP(tm) Project
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* @package Cake.Model.Validator
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* @since CakePHP(tm) v 2.2.0
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* @license http://www.opensource.org/licenses/mit-license.php MIT License
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*/
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App::uses('Validation', 'Utility');
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/**
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* CakeValidationRule object. Represents a validation method, error message and
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* rules for applying such method to a field.
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*
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* @package Cake.Model.Validator
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* @link http://book.cakephp.org/2.0/en/data-validation.html
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*/
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class CakeValidationRule {
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/**
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* Whether the field passed this validation rule
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*
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* @var mixed
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*/
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protected $_valid = true;
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/**
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* Holds whether the record being validated exists in datasource or not
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*
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* @var boolean
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*/
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protected $_recordExists = false;
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/**
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* Validation method
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*
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* @var mixed
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*/
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protected $_rule = null;
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/**
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* Validation method arguments
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*
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* @var array
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*/
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protected $_ruleParams = array();
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/**
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* Holds passed in options
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*
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* @var array
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*/
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protected $_passedOptions = array();
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/**
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* The 'rule' key
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*
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* @var mixed
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*/
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public $rule = 'blank';
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/**
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* The 'required' key
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*
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* @var mixed
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*/
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public $required = null;
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/**
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* The 'allowEmpty' key
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*
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* @var boolean
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*/
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public $allowEmpty = null;
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/**
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* The 'on' key
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*
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* @var string
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*/
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public $on = null;
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/**
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* The 'last' key
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*
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* @var boolean
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*/
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public $last = true;
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/**
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* The 'message' key
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*
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* @var string
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*/
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public $message = null;
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/**
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* Constructor
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*
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* @param array $validator [optional] The validator properties
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*/
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public function __construct($validator = array()) {
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$this->_addValidatorProps($validator);
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}
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/**
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* Checks if the rule is valid
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*
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* @return boolean
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*/
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public function isValid() {
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if (!$this->_valid || (is_string($this->_valid) && !empty($this->_valid))) {
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return false;
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}
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return true;
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}
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/**
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* Returns whether the field can be left blank according to this rule
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*
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* @return boolean
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*/
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public function isEmptyAllowed() {
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return $this->skip() || $this->allowEmpty === true;
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}
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/**
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* Checks if the field is required according to the `required` property
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*
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* @return boolean
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*/
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public function isRequired() {
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if (in_array($this->required, array('create', 'update'), true)) {
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if ($this->required === 'create' && !$this->isUpdate() || $this->required === 'update' && $this->isUpdate()) {
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return true;
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}
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return false;
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}
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return $this->required;
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}
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/**
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* Checks whether the field failed the `field should be present` validation
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*
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* @param string $field Field name
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* @param array $data Data to check rule against
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* @return boolean
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*/
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public function checkRequired($field, &$data) {
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return (
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(!array_key_exists($field, $data) && $this->isRequired() === true) ||
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(
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array_key_exists($field, $data) && (empty($data[$field]) &&
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!is_numeric($data[$field])) && $this->allowEmpty === false
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)
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);
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}
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/**
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* Checks if the allowEmpty key applies
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*
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* @param string $field Field name
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* @param array $data data to check rule against
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* @return boolean
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*/
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public function checkEmpty($field, &$data) {
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if (empty($data[$field]) && $data[$field] != '0' && $this->allowEmpty === true) {
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return true;
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}
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return false;
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}
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/**
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* Checks if the validation rule should be skipped
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*
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* @return boolean True if the ValidationRule can be skipped
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*/
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public function skip() {
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if (!empty($this->on)) {
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if ($this->on === 'create' && $this->isUpdate() || $this->on === 'update' && !$this->isUpdate()) {
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return true;
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}
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}
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return false;
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}
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/**
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* Returns whether this rule should break validation process for associated field
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* after it fails
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*
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* @return boolean
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*/
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public function isLast() {
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return (bool)$this->last;
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}
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/**
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* Gets the validation error message
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*
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* @return string
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*/
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public function getValidationResult() {
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return $this->_valid;
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}
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/**
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* Gets an array with the rule properties
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*
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* @return array
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*/
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protected function _getPropertiesArray() {
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$rule = $this->rule;
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if (!is_string($rule)) {
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unset($rule[0]);
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}
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return array(
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'rule' => $rule,
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'required' => $this->required,
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'allowEmpty' => $this->allowEmpty,
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'on' => $this->on,
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'last' => $this->last,
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'message' => $this->message
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);
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}
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/**
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* Sets the recordExists configuration value for this rule,
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* ir refers to whether the model record it is validating exists
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* exists in the collection or not (create or update operation)
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*
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* If called with no parameters it will return whether this rule
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* is configured for update operations or not.
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*
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* @param boolean $exists Boolean to indicate if records exists
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* @return boolean
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*/
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public function isUpdate($exists = null) {
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if ($exists === null) {
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return $this->_recordExists;
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}
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return $this->_recordExists = $exists;
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}
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/**
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* Dispatches the validation rule to the given validator method
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*
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* @param string $field Field name
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* @param array $data Data array
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* @param array $methods Methods list
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* @return boolean True if the rule could be dispatched, false otherwise
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*/
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public function process($field, &$data, &$methods) {
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$this->_valid = true;
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$this->_parseRule($field, $data);
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$validator = $this->_getPropertiesArray();
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$rule = strtolower($this->_rule);
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if (isset($methods[$rule])) {
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$this->_ruleParams[] = array_merge($validator, $this->_passedOptions);
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$this->_ruleParams[0] = array($field => $this->_ruleParams[0]);
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$this->_valid = call_user_func_array($methods[$rule], $this->_ruleParams);
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} elseif (class_exists('Validation') && method_exists('Validation', $this->_rule)) {
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$this->_valid = call_user_func_array(array('Validation', $this->_rule), $this->_ruleParams);
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} elseif (is_string($validator['rule'])) {
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$this->_valid = preg_match($this->_rule, $data[$field]);
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} else {
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trigger_error(__d('cake_dev', 'Could not find validation handler %s for %s', $this->_rule, $field), E_USER_WARNING);
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return false;
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}
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return true;
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}
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/**
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* Resets internal state for this rule, by default it will become valid
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* and it will set isUpdate() to false
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*
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* @return void
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*/
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public function reset() {
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$this->_valid = true;
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$this->_recordExists = false;
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}
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/**
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* Returns passed options for this rule
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*
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* @param string|integer $key Array index
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* @return array
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*/
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public function getOptions($key) {
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if (!isset($this->_passedOptions[$key])) {
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return null;
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}
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return $this->_passedOptions[$key];
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}
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/**
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* Sets the rule properties from the rule entry in validate
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*
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* @param array $validator [optional]
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* @return void
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*/
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protected function _addValidatorProps($validator = array()) {
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if (!is_array($validator)) {
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$validator = array('rule' => $validator);
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}
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foreach ($validator as $key => $value) {
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if (isset($value) || !empty($value)) {
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if (in_array($key, array('rule', 'required', 'allowEmpty', 'on', 'message', 'last'))) {
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$this->{$key} = $validator[$key];
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} else {
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$this->_passedOptions[$key] = $value;
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}
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}
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}
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}
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/**
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* Parses the rule and sets the rule and ruleParams
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*
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* @param string $field Field name
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* @param array $data Data array
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* @return void
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*/
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protected function _parseRule($field, &$data) {
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if (is_array($this->rule)) {
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$this->_rule = $this->rule[0];
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$this->_ruleParams = array_merge(array($data[$field]), array_values(array_slice($this->rule, 1)));
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} else {
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$this->_rule = $this->rule;
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$this->_ruleParams = array($data[$field]);
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}
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}
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}
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