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<?php
/**
* @link http://www.yiiframework.com/
* @copyright Copyright (c) 2008 Yii Software LLC
* @license http://www.yiiframework.com/license/
*/
namespace yii\validators;
use Yii;
use yii\base\InvalidConfigException;
use yii\helpers\Html;
/**
* CompareValidator compares the specified attribute value with another value.
*
* The value being compared with can be another attribute value
* (specified via [[compareAttribute]]) or a constant (specified via
* [[compareValue]]. When both are specified, the latter takes
* precedence. If neither is specified, the attribute will be compared
* with another attribute whose name is by appending "_repeat" to the source
* attribute name.
*
* CompareValidator supports different comparison operators, specified
* via the [[operator]] property.
*
* The default comparison function is based on string values, which means the values
* are compared byte by byte. When comparing numbers, make sure to set the [[$type]]
* to [[TYPE_NUMBER]] to enable numeric comparison.
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @since 2.0
*/
class CompareValidator extends Validator
{
/**
* Constant for specifying the comparison [[type]] by numeric values.
* @since 2.0.11
* @see type
*/
const TYPE_STRING = 'string';
/**
* Constant for specifying the comparison [[type]] by numeric values.
* @since 2.0.11
* @see type
*/
const TYPE_NUMBER = 'number';
/**
* @var string the name of the attribute to be compared with. When both this property
* and [[compareValue]] are set, the latter takes precedence. If neither is set,
* it assumes the comparison is against another attribute whose name is formed by
* appending '_repeat' to the attribute being validated. For example, if 'password' is
* being validated, then the attribute to be compared would be 'password_repeat'.
* @see compareValue
*/
public $compareAttribute;
/**
* @var mixed the constant value to be compared with. When both this property
* and [[compareAttribute]] are set, this property takes precedence.
* @see compareAttribute
*/
public $compareValue;
/**
* @var string the type of the values being compared. The follow types are supported:
*
* - [[TYPE_STRING|string]]: the values are being compared as strings. No conversion will be done before comparison.
* - [[TYPE_NUMBER|number]]: the values are being compared as numbers. String values will be converted into numbers before comparison.
*/
public $type = self::TYPE_STRING;
/**
* @var string the operator for comparison. The following operators are supported:
*
* - `==`: check if two values are equal. The comparison is done is non-strict mode.
* - `===`: check if two values are equal. The comparison is done is strict mode.
* - `!=`: check if two values are NOT equal. The comparison is done is non-strict mode.
* - `!==`: check if two values are NOT equal. The comparison is done is strict mode.
* - `>`: check if value being validated is greater than the value being compared with.
* - `>=`: check if value being validated is greater than or equal to the value being compared with.
* - `<`: check if value being validated is less than the value being compared with.
* - `<=`: check if value being validated is less than or equal to the value being compared with.
*
* When you want to compare numbers, make sure to also set [[type]] to `number`.
*/
public $operator = '==';
/**
* @var string the user-defined error message. It may contain the following placeholders which
* will be replaced accordingly by the validator:
*
* - `{attribute}`: the label of the attribute being validated
* - `{value}`: the value of the attribute being validated
* - `{compareValue}`: the value or the attribute label to be compared with
* - `{compareAttribute}`: the label of the attribute to be compared with
* - `{compareValueOrAttribute}`: the value or the attribute label to be compared with
*/
public $message;
/**
* {@inheritdoc}
*/
public function init()
{
parent::init();
if ($this->message === null) {
switch ($this->operator) {
case '==':
$this->message = Yii::t('yii', '{attribute} must be equal to "{compareValueOrAttribute}".');
break;
case '===':
$this->message = Yii::t('yii', '{attribute} must be equal to "{compareValueOrAttribute}".');
break;
case '!=':
$this->message = Yii::t('yii', '{attribute} must not be equal to "{compareValueOrAttribute}".');
break;
case '!==':
$this->message = Yii::t('yii', '{attribute} must not be equal to "{compareValueOrAttribute}".');
break;
case '>':
$this->message = Yii::t('yii', '{attribute} must be greater than "{compareValueOrAttribute}".');
break;
case '>=':
$this->message = Yii::t('yii', '{attribute} must be greater than or equal to "{compareValueOrAttribute}".');
break;
case '<':
$this->message = Yii::t('yii', '{attribute} must be less than "{compareValueOrAttribute}".');
break;
case '<=':
$this->message = Yii::t('yii', '{attribute} must be less than or equal to "{compareValueOrAttribute}".');
break;
default:
throw new InvalidConfigException("Unknown operator: {$this->operator}");
}
}
}
/**
* {@inheritdoc}
*/
public function validateAttribute($model, $attribute)
{
$value = $model->$attribute;
if (is_array($value)) {
$this->addError($model, $attribute, Yii::t('yii', '{attribute} is invalid.'));
return;
}
if ($this->compareValue !== null) {
$compareLabel = $compareValue = $compareValueOrAttribute = $this->compareValue;
} else {
$compareAttribute = $this->compareAttribute === null ? $attribute . '_repeat' : $this->compareAttribute;
$compareValue = $model->$compareAttribute;
$compareLabel = $compareValueOrAttribute = $model->getAttributeLabel($compareAttribute);
}
if (!$this->compareValues($this->operator, $this->type, $value, $compareValue)) {
$this->addError($model, $attribute, $this->message, [
'compareAttribute' => $compareLabel,
'compareValue' => $compareValue,
'compareValueOrAttribute' => $compareValueOrAttribute,
]);
}
}
/**
* {@inheritdoc}
*/
protected function validateValue($value)
{
if ($this->compareValue === null) {
throw new InvalidConfigException('CompareValidator::compareValue must be set.');
}
if (!$this->compareValues($this->operator, $this->type, $value, $this->compareValue)) {
return [$this->message, [
'compareAttribute' => $this->compareValue,
'compareValue' => $this->compareValue,
'compareValueOrAttribute' => $this->compareValue,
]];
}
return null;
}
/**
* Compares two values with the specified operator.
* @param string $operator the comparison operator
* @param string $type the type of the values being compared
* @param mixed $value the value being compared
* @param mixed $compareValue another value being compared
* @return bool whether the comparison using the specified operator is true.
*/
protected function compareValues($operator, $type, $value, $compareValue)
{
if ($type === self::TYPE_NUMBER) {
$value = (float) $value;
$compareValue = (float) $compareValue;
} else {
$value = (string) $value;
$compareValue = (string) $compareValue;
}
switch ($operator) {
case '==':
return $value == $compareValue;
case '===':
return $value === $compareValue;
case '!=':
return $value != $compareValue;
case '!==':
return $value !== $compareValue;
case '>':
return $value > $compareValue;
case '>=':
return $value >= $compareValue;
case '<':
return $value < $compareValue;
case '<=':
return $value <= $compareValue;
default:
return false;
}
}
/**
* {@inheritdoc}
*/
public function clientValidateAttribute($model, $attribute, $view)
{
ValidationAsset::register($view);
$options = $this->getClientOptions($model, $attribute);
return 'yii.validation.compare(value, messages, ' . json_encode($options, JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE) . ', $form);';
}
/**
* {@inheritdoc}
*/
public function getClientOptions($model, $attribute)
{
$options = [
'operator' => $this->operator,
'type' => $this->type,
];
if ($this->compareValue !== null) {
$options['compareValue'] = $this->compareValue;
$compareLabel = $compareValue = $compareValueOrAttribute = $this->compareValue;
} else {
$compareAttribute = $this->compareAttribute === null ? $attribute . '_repeat' : $this->compareAttribute;
$compareValue = $model->getAttributeLabel($compareAttribute);
$options['compareAttribute'] = Html::getInputId($model, $compareAttribute);
$options['compareAttributeName'] = Html::getInputName($model, $compareAttribute);
$compareLabel = $compareValueOrAttribute = $model->getAttributeLabel($compareAttribute);
}
if ($this->skipOnEmpty) {
$options['skipOnEmpty'] = 1;
}
$options['message'] = $this->formatMessage($this->message, [
'attribute' => $model->getAttributeLabel($attribute),
'compareAttribute' => $compareLabel,
'compareValue' => $compareValue,
'compareValueOrAttribute' => $compareValueOrAttribute,
]);
return $options;
}
}