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288 lines
10 KiB
288 lines
10 KiB
<?php |
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/** |
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* Validator class file. |
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* |
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* @link http://www.yiiframework.com/ |
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* @copyright Copyright © 2008-2012 Yii Software LLC |
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* @license http://www.yiiframework.com/license/ |
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*/ |
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namespace yii\validators; |
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/** |
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* Validator is the base class for all validators. |
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* |
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* Child classes must implement the {@link validateAttribute} method. |
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* |
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* The following properties are defined in CValidator: |
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* <ul> |
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* <li>{@link attributes}: array, list of attributes to be validated;</li> |
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* <li>{@link message}: string, the customized error message. The message |
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* may contain placeholders that will be replaced with the actual content. |
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* For example, the "{attribute}" placeholder will be replaced with the label |
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* of the problematic attribute. Different validators may define additional |
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* placeholders.</li> |
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* <li>{@link on}: string, in which scenario should the validator be in effect. |
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* This is used to match the 'on' parameter supplied when calling {@link CModel::validate}.</li> |
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* </ul> |
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* |
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* When using {@link createValidator} to create a validator, the following aliases |
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* are recognized as the corresponding built-in validator classes: |
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* <ul> |
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* <li>required: {@link CRequiredValidator}</li> |
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* <li>filter: {@link CFilterValidator}</li> |
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* <li>match: {@link CRegularExpressionValidator}</li> |
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* <li>email: {@link CEmailValidator}</li> |
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* <li>url: {@link CUrlValidator}</li> |
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* <li>unique: {@link CUniqueValidator}</li> |
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* <li>compare: {@link CCompareValidator}</li> |
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* <li>length: {@link CStringValidator}</li> |
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* <li>in: {@link CRangeValidator}</li> |
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* <li>numerical: {@link CNumberValidator}</li> |
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* <li>captcha: {@link CCaptchaValidator}</li> |
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* <li>type: {@link CTypeValidator}</li> |
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* <li>file: {@link CFileValidator}</li> |
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* <li>default: {@link CDefaultValueValidator}</li> |
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* <li>exist: {@link CExistValidator}</li> |
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* <li>boolean: {@link CBooleanValidator}</li> |
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* <li>date: {@link CDateValidator}</li> |
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* <li>safe: {@link CSafeValidator}</li> |
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* <li>unsafe: {@link CUnsafeValidator}</li> |
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* </ul> |
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* |
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* @author Qiang Xue <qiang.xue@gmail.com> |
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* @version $Id: CValidator.php 3160 2011-04-03 01:08:23Z qiang.xue $ |
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* @package system.validators |
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* @since 2.0 |
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*/ |
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abstract class Validator extends \yii\base\Component |
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{ |
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/** |
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* @var array list of built-in validators (name => class or configuration) |
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*/ |
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public static $builtInValidators = array( |
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'required' => '\yii\validators\RequiredValidator', |
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'filter' => '\yii\validators\FilterValidator', |
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'match' => '\yii\validators\RegularExpressionValidator', |
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'email' => '\yii\validators\EmailValidator', |
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'url' => '\yii\validators\UrlValidator', |
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'compare' => '\yii\validators\CompareValidator', |
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'length' => '\yii\validators\StringValidator', |
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'in' => '\yii\validators\RangeValidator', |
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'numerical' => '\yii\validators\NumberValidator', |
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'boolean' => '\yii\validators\BooleanValidator', |
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'integer' => '\yii\validators\IntegerValidator', |
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'float' => '\yii\validators\FloatValidator', |
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'string' => '\yii\validators\StringValidator', |
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'date' => '\yii\validators\DateValidator', |
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'captcha' => '\yii\validators\CaptchaValidator', |
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'type' => '\yii\validators\TypeValidator', |
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'file' => '\yii\validators\FileValidator', |
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'default' => '\yii\validators\DefaultValueValidator', |
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'unique' => '\yii\validators\UniqueValidator', |
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'exist' => '\yii\validators\ExistValidator', |
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'safe' => '\yii\validators\SafeValidator', |
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'unsafe' => '\yii\validators\UnsafeValidator', |
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); |
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/** |
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* @var array list of attributes to be validated. |
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*/ |
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public $attributes; |
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/** |
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* @var string the user-defined error message. Error message may contain some placeholders |
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* that will be replaced with the actual values by the validator. |
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* The `{attribute}` and `{value}` are placeholders supported by all validators. |
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* They will be replaced with the attribute label and value, respectively. |
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*/ |
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public $message; |
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/** |
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* @var array list of scenarios that the validator should be applied. |
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* Each array value refers to a scenario name with the same name as its array key. |
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*/ |
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public $on; |
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/** |
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* @var boolean whether this validation rule should be skipped if the attribute being validated |
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* already has some validation error according to the previous rules. Defaults to false. |
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*/ |
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public $skipOnError = false; |
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/** |
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* @var boolean whether attributes listed with this validator should be considered safe for |
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* massive assignment. Defaults to true. |
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*/ |
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public $safe = true; |
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/** |
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* @var boolean whether to enable client-side validation. Defaults to true. |
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* Please refer to [[\yii\web\ActiveForm::enableClientValidation]] for more details about |
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* client-side validation. |
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*/ |
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public $enableClientValidation = true; |
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/** |
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* Validates a value. |
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* Child classes should override this method to implement the actual validation logic. |
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* @param mixed $value the value being validated. |
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* @return boolean whether the value is valid. |
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*/ |
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abstract public function validateValue($value); |
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/** |
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* Validates a single attribute. |
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* The default implementation will call [[validateValue]] to determine if |
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* the attribute value is valid or not. If not, the [[message|error message]] |
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* will be added to the model object. |
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* @param \yii\base\Model $object the data object being validated |
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* @param string $attribute the name of the attribute to be validated. |
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*/ |
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public function validateAttribute($object, $attribute) |
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{ |
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if (!$this->validateValue($object->$attribute)) { |
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$this->addError($object, $attribute, $this->message); |
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} |
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} |
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/** |
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* Creates a validator object. |
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* @param string $type the validator type. This can be a method name, |
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* a built-in validator name, a class name, or a path alias of validator class. |
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* @param \yii\base\Model $object the data object being validated. |
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* @param mixed $attributes list of attributes to be validated. This can be either an array of |
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* the attribute names or a string of comma-separated attribute names. |
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* @param array $params initial values to be applied to the validator properties |
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* @return Validator the validator |
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*/ |
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public static function createValidator($type, $object, $attributes, $params = array()) |
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{ |
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if (!is_array($attributes)) { |
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$attributes = preg_split('/[\s,]+/', $attributes, -1, PREG_SPLIT_NO_EMPTY); |
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} |
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if (isset($params['on'])) { |
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if (is_array($params['on'])) { |
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$on = $params['on']; |
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} |
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else { |
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$on = preg_split('/[\s,]+/', $params['on'], -1, PREG_SPLIT_NO_EMPTY); |
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} |
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$params['on'] = empty($on) ? array() : array_combine($on, $on); |
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} |
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else { |
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$params['on'] = array(); |
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} |
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if (method_exists($object, $type)) { // method-based validator |
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$config = array( |
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'class' => '\yii\validators\InlineValidator', |
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'method' => $type, |
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'attributes' => $attributes, |
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); |
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} |
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else { |
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if (is_string($type) && isset(self::$builtInValidators[$type])) { |
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$type = self::$builtInValidators[$type]; |
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} |
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$config = array( |
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'class' => $type, |
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'attributes' => $attributes, |
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); |
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} |
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$validator = \Yii::createComponent($config); |
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foreach ($params as $name => $value) { |
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$validator->$name = $value; |
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} |
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return $validator; |
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} |
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/** |
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* Validates the specified object. |
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* @param \yii\base\Model $object the data object being validated |
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* @param array $attributes the list of attributes to be validated. Defaults to null, |
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* meaning every attribute listed in [[attributes]] will be validated. |
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*/ |
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public function validate($object, $attributes = null) |
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{ |
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if (is_array($attributes)) { |
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$attributes = array_intersect($this->attributes, $attributes); |
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} |
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else { |
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$attributes = $this->attributes; |
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} |
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foreach ($attributes as $attribute) { |
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if (!$this->skipOnError || !$object->hasErrors($attribute)) { |
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$this->validateAttribute($object, $attribute); |
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} |
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} |
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} |
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/** |
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* Returns the JavaScript needed for performing client-side validation. |
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* |
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* You may override this method to return the JavaScript validation code if |
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* the validator can support client-side validation. |
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* |
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* The following JavaScript variables are predefined and can be used in the validation code: |
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* |
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* - `attribute`: the name of the attribute being validated. |
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* - `value`: the value being validated. |
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* - `messages`: an array used to hold the validation error messages for the attribute. |
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* |
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* @param \yii\base\Model $object the data object being validated |
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* @param string $attribute the name of the attribute to be validated. |
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* @return string the client-side validation script. Null if the validator does not support |
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* client-side validation. |
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* @see enableClientValidation |
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* @see \yii\web\ActiveForm::enableClientValidation |
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*/ |
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public function clientValidateAttribute($object, $attribute) |
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{ |
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} |
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/** |
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* Returns a value indicating whether the validator applies to the specified scenario. |
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* A validator applies to a scenario as long as any of the following conditions is met: |
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* |
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* - the validator's `on` property is empty |
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* - the validator's `on` property contains the specified scenario |
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* |
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* @param string $scenario scenario name |
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* @return boolean whether the validator applies to the specified scenario. |
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*/ |
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public function applyTo($scenario) |
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{ |
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return empty($this->on) || isset($this->on[$scenario]); |
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} |
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/** |
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* Adds an error about the specified attribute to the model object. |
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* This is a helper method that performs message selection and internationalization. |
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* @param \yii\base\Model $object the data object being validated |
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* @param string $attribute the attribute being validated |
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* @param string $message the error message |
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* @param array $params values for the placeholders in the error message |
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*/ |
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protected function addError($object, $attribute, $message, $params = array()) |
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{ |
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$params['{attribute}'] = $object->getAttributeLabel($attribute); |
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$params['{value}'] = $object->$attribute; |
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$object->addError($attribute, strtr($message, $params)); |
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} |
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/** |
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* Checks if the given value is empty. |
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* A value is considered empty if it is null, an empty array, or the trimmed result is an empty string. |
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* Note that this method is different from PHP empty(). It will return false when the value is 0. |
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* @param mixed $value the value to be checked |
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* @param boolean $trim whether to perform trimming before checking if the string is empty. Defaults to false. |
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* @return boolean whether the value is empty |
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*/ |
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protected function isEmpty($value, $trim = false) |
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{ |
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return $value === null || $value === array() || $value === '' |
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|| $trim && is_scalar($value) && trim($value) === ''; |
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} |
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}
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