schemars/docs/examples/3-custom_settings.md
2019-12-26 22:00:47 +00:00

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---
layout: default
title: Custom Schema Settings
parent: Examples
nav_order: 3
summary: Generating a schema using custom settings which changes how Option<T> is handled.
---
# Custom Schema Settings
The `gen` module allows you to customise how schemas are generated. For example, the default behaviour for `Option<T>` is to include `null` in the schema's `type`s, but we can instead add a `nullable` property to its schema:
{% include example.md name="custom_settings" %}