/**
* Find the maxlength parameter for an attribute's model.
*
* This method searches for a yii\validators\StringValidator among all the active validators (based on the current
* model scenario). If it founds one, it returns the max length parameter value. If no such value can be found because it is not
* defined or because no StringValidator is active, $defaultValue is returned.
*
* @param yii\base\Model $model
* @param string $attribute the attribute name
* @return integer | null the maxlength setting
* @see yii\validators\StringValidator
*/
public static function getMaxLength($model, $attribute, $defaultValue = null)
{
$maxLength = null;
foreach ($model->getActiveValidators($attribute) as $validator) {
if ($validator instanceof yii\validators\StringValidator) {
$maxLength = $validator->max;
break;
}
}
return $maxLength !== null ? $maxLength : $defaultValue;
}
