/**
  * Get the post value.
  *
  * @param null $default
  * @return null|Carbon
  */
 public function getPostValue($default = null)
 {
     if (!($value = array_filter((array) parent::getPostValue($default)))) {
         return null;
     }
     if ($this->getColumnType() === 'datetime' && count($value) !== 2) {
         return null;
     }
     return (new Carbon())->createFromFormat($this->getFormat(), implode(' ', $value));
 }
 /**
  * Get the post value.
  *
  * @param null $default
  * @return bool
  */
 public function getPostValue($default = null)
 {
     return filter_var(parent::getPostValue($default), FILTER_VALIDATE_BOOLEAN);
 }
 /**
  * Get the post value.
  *
  * @param  null $default
  * @return array
  */
 public function getPostValue($default = null)
 {
     return array_filter(explode(',', parent::getPostValue($default)));
 }
 /**
  * Get the post value.
  *
  * @param null $default
  * @return array
  */
 public function getPostValue($default = null)
 {
     return explode(',', parent::getPostValue($default));
 }
 /**
  * Return the validation value.
  *
  * @param null $default
  * @return mixed
  */
 public function getValidationValue($default = null)
 {
     return parent::getPostValue($default);
 }