FieldType::extractValue

public function extractValue(array $field, array $request, array &$errors = null)
{
	$typeClass = $this->typeClass;

	if ($this->isMultiple())
	{
		$result = $typeClass::extractValueMultiple($this, $field, $request);
	}
	else
	{
		$result = $typeClass::extractValueSingle($this, $field, $request);
	}
	$errors = $typeClass::getErrors();

	return $result;
}