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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;
/**
* RequiredValidator validates that the specified attribute does not have null or empty value.
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @since 2.0
*/
class RequiredValidator extends Validator
{
/**
* @var bool whether to skip this validator if the value being validated is empty.
*/
public $skipOnEmpty = false;
/**
* @var mixed the desired value that the attribute must have.
* If this is null, the validator will validate that the specified attribute is not empty.
* If this is set as a value that is not null, the validator will validate that
* the attribute has a value that is the same as this property value.
* Defaults to null.
* @see strict
*/
public $requiredValue;
/**
* @var bool whether the comparison between the attribute value and [[requiredValue]] is strict.
* When this is true, both the values and types must match.
* Defaults to false, meaning only the values need to match.
*
* Note that behavior for when [[requiredValue]] is null is the following:
*
* - In strict mode, the validator will check if the attribute value is null
* - In non-strict mode validation will fail
*/
public $strict = false;
/**
* @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
* - `{requiredValue}`: the value of [[requiredValue]]
*/
public $message;
/**
* {@inheritdoc}
*/
public function init()
{
parent::init();
if ($this->message === null) {
$this->message = $this->requiredValue === null ? Yii::t('yii', '{attribute} cannot be blank.')
: Yii::t('yii', '{attribute} must be "{requiredValue}".');
}
}
/**
* {@inheritdoc}
*/
protected function validateValue($value)
{
if ($this->requiredValue === null) {
if ($this->strict && $value !== null || !$this->strict && !$this->isEmpty(is_string($value) ? trim($value) : $value)) {
return null;
}
} elseif (!$this->strict && $value == $this->requiredValue || $this->strict && $value === $this->requiredValue) {
return null;
}
if ($this->requiredValue === null) {
return [$this->message, []];
}
return [$this->message, [
'requiredValue' => $this->requiredValue,
]];
}
/**
* {@inheritdoc}
*/
public function clientValidateAttribute($model, $attribute, $view)
{
ValidationAsset::register($view);
$options = $this->getClientOptions($model, $attribute);
return 'yii.validation.required(value, messages, ' . json_encode($options, JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE) . ');';
}
/**
* {@inheritdoc}
*/
public function getClientOptions($model, $attribute)
{
$options = [];
if ($this->requiredValue !== null) {
$options['message'] = $this->formatMessage($this->message, [
'requiredValue' => $this->requiredValue,
]);
$options['requiredValue'] = $this->requiredValue;
} else {
$options['message'] = $this->message;
}
if ($this->strict) {
$options['strict'] = 1;
}
$options['message'] = $this->formatMessage($options['message'], [
'attribute' => $model->getAttributeLabel($attribute),
]);
return $options;
}
}