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