/**
* Validates a rule on the form and adds its result to the errors collection.
*
* @param string $FieldName The name of the field to validate.
* @param string|array $Rule The rule to validate against.
* @param string $CustomError A custom error string.
* @return bool Whether or not the rule succeeded.
*
* @see Gdn_Validation::ValidateRule()
*/
public function ValidateRule($FieldName, $Rule, $CustomError = '')
{
$Value = $this->GetFormValue($FieldName);
$Valid = Gdn_Validation::ValidateRule($Value, $FieldName, $Rule, $CustomError);
if ($Valid === TRUE) {
return TRUE;
} else {
$this->AddError('@' . $Valid);
return FALSE;
}
}