---
title: "file type · RUAL Documentation"
description: "RUAL field validation block."
canonical: https://docs.rual.nl/block-types/field validation/fieldvalidation_filetype
language: en
---

# file type

This block is part of the [`field validation`](https://docs.rual.nl/block-types/field%20validation) group and was last modified in core [`v10.4.28`](https://docs.rual.nl/core-versions/100428).

### Parent Requirements

This block requires specific parent elements: `component_custom_input_file`, `component_input_file`. Ensure this block is placed within the appropriate parent context.

- fieldvalidation `fieldvalidation`

A typical wiring for [file type](https://docs.rual.nl/block-types/field%20validation/fieldvalidation_filetype): the `fieldvalidation` out pin feeds [radio](https://docs.rual.nl/block-types/Component%20UI/component_radio).

![Studio canvas example for the file type block: typical wiring for file type.](https://docs.rual.nl/canvas-examples/fieldvalidation_filetype.png)

### Version history

Introduced in [`v10.4.28`](https://docs.rual.nl/core-versions/100428).