* @since 2.0 */ class CompareValidator extends Validator { /** * @var string the name of the attribute to be compared with */ public $compareAttribute; /** * @var string the constant value to be compared with */ public $compareValue; /** * @var boolean whether the comparison is strict (both value and type must be the same.) * Defaults to false. */ public $strict = false; /** * @var boolean whether the attribute value can be null or empty. Defaults to false. * If this is true, it means the attribute is considered valid when it is empty. */ public $allowEmpty = false; /** * @var string the operator for comparison. Defaults to '='. * The followings are valid operators: *

*
• '=' or '==': validates to see if the two values are equal. If [[strict]] is true, the comparison * will be done in strict mode (i.e. checking value type as well).
*
• '!=': validates to see if the two values are NOT equal. If [[strict]] is true, the comparison * will be done in strict mode (i.e. checking value type as well).
*
• '>': validates to see if the value being validated is greater than the value being compared with.
*
• '>=': validates to see if the value being validated is greater than or equal to the value being compared with.
*
• '<': validates to see if the value being validated is less than the value being compared with.
*
• '<=': validates to see if the value being validated is less than or equal to the value being compared with.
*

*/ public $operator = '='; /** * Validates the attribute of the object. * If there is any error, the error message is added to the object. * @param \yii\base\Model $object the object being validated * @param string $attribute the attribute being validated */ public function validateAttribute($object, $attribute) { $value = $object->$attribute; if ($this->allowEmpty && $this->isEmpty($value)) { return; } if ($this->compareValue !== null) { $compareTo = $compareValue = $this->compareValue; } else { $compareAttribute = $this->compareAttribute === null ? $attribute . '_repeat' : $this->compareAttribute; $compareValue = $object->$compareAttribute; $compareTo = $object->getAttributeLabel($compareAttribute); } switch ($this->operator) { case '=': case '==': if (($this->strict && $value !== $compareValue) || (!$this->strict && $value != $compareValue)) { $message = $this->message !== null ? $this->message : Yii::t('yii', '{attribute} must be repeated exactly.'); $this->addError($object, $attribute, $message, array('{compareAttribute}' => $compareTo)); } break; case '!=': if (($this->strict && $value === $compareValue) || (!$this->strict && $value == $compareValue)) { $message = $this->message !== null ? $this->message : Yii::t('yii', '{attribute} must not be equal to "{compareValue}".'); $this->addError($object, $attribute, $message, array('{compareAttribute}' => $compareTo, '{compareValue}' => $compareValue)); } break; case '>': if ($value <= $compareValue) { $message = $this->message !== null ? $this->message : Yii::t('yii', '{attribute} must be greater than "{compareValue}".'); $this->addError($object, $attribute, $message, array('{compareAttribute}' => $compareTo, '{compareValue}' => $compareValue)); } break; case '>=': if ($value < $compareValue) { $message = $this->message !== null ? $this->message : Yii::t('yii', '{attribute} must be greater than or equal to "{compareValue}".'); $this->addError($object, $attribute, $message, array('{compareAttribute}' => $compareTo, '{compareValue}' => $compareValue)); } break; case '<': if ($value >= $compareValue) { $message = $this->message !== null ? $this->message : Yii::t('yii', '{attribute} must be less than "{compareValue}".'); $this->addError($object, $attribute, $message, array('{compareAttribute}' => $compareTo, '{compareValue}' => $compareValue)); } break; case '<=': if ($value > $compareValue) { $message = $this->message !== null ? $this->message : Yii::t('yii', '{attribute} must be less than or equal to "{compareValue}".'); $this->addError($object, $attribute, $message, array('{compareAttribute}' => $compareTo, '{compareValue}' => $compareValue)); } break; default: throw new \yii\base\Exception('Invalid operator "' . $this->operator . '".'); } } /** * Returns the JavaScript needed for performing client-side validation. * @param \yii\base\Model $object the data object being validated * @param string $attribute the name of the attribute to be validated. * @return string the client-side validation script. */ public function clientValidateAttribute($object, $attribute) { if ($this->compareValue !== null) { $compareTo = $this->compareValue; $compareValue = json_encode($this->compareValue); } else { $compareAttribute = $this->compareAttribute === null ? $attribute . '_repeat' : $this->compareAttribute; $compareValue = "\$('#" . (CHtml::activeId($object, $compareAttribute)) . "').val()"; $compareTo = $object->getAttributeLabel($compareAttribute); } $message = $this->message; switch ($this->operator) { case '=': case '==': if ($message === null) { $message = Yii::t('yii', '{attribute} must be repeated exactly.'); } $condition = 'value!=' . $compareValue; break; case '!=': if ($message === null) { $message = Yii::t('yii', '{attribute} must not be equal to "{compareValue}".'); } $condition = 'value==' . $compareValue; break; case '>': if ($message === null) { $message = Yii::t('yii', '{attribute} must be greater than "{compareValue}".'); } $condition = 'value<=' . $compareValue; break; case '>=': if ($message === null) { $message = Yii::t('yii', '{attribute} must be greater than or equal to "{compareValue}".'); } $condition = 'value<' . $compareValue; break; case '<': if ($message === null) { $message = Yii::t('yii', '{attribute} must be less than "{compareValue}".'); } $condition = 'value>=' . $compareValue; break; case '<=': if ($message === null) { $message = Yii::t('yii', '{attribute} must be less than or equal to "{compareValue}".'); } $condition = 'value>' . $compareValue; break; default: throw new \yii\base\Exception('Invalid operator "' . $this->operator . '".'); } $message = strtr($message, array( '{attribute}' => $object->getAttributeLabel($attribute), '{compareValue}' => $compareTo, )); return " if (" . ($this->allowEmpty ? "$.trim(value)!='' && " : '') . $condition . ") { messages.push(" . json_encode($message) . "); } "; } }