silverstripe-framework/docs/en/02_Developer_Guides/19_GraphQL/06_extending/index.md

---
title: Extending the schema
summary: Add new functionality to the schema
---

In this section of the documentation, we'll look at some advanced
features for developers who want to extend their GraphQL server 
using custom models, middleware, and new operations.

[CHILDREN]

[alert]
You are viewing docs for a pre-release version of silverstripe/graphql (4.x).
Help us improve it by joining #graphql on the [Community Slack](https://www.silverstripe.org/blog/community-slack-channel/),
and report any issues at [github.com/silverstripe/silverstripe-graphql](https://github.com/silverstripe/silverstripe-graphql). 
Docs for the current stable version (3.x) can be found
[here](https://github.com/silverstripe/silverstripe-graphql/tree/3)
[/alert]
WIP: Add new graphql 4 docs (#9652) * DOCS: Add new graphql 4 docs * Reorganise docs * Docs done * Basic graphql index page * TOC for getting started * show folders on graphql index page * Add middleware note * Docs update * Update docs to reflect flushless schema * Docs updates * Docs for getByLink * Query caching docs * Docs on nested operations * update docs for new graphql dev admin * Docs for configurable operations * Replace readSiteTrees with readPages * Schema defaults docs * Docs for inherited plugins * Docs for customising * * Docs for field whitelisting * Change whitelist word * New docs on modelConfig * Document dev/build extension * Document default/global plugins * Document new input type fields config * Apply suggestions from code review Co-authored-by: Andre Kiste <bergice@users.noreply.github.com> * Note about when procedural schema gets built * Fix link * Apply suggestions from code review Co-authored-by: Andre Kiste <bergice@users.noreply.github.com> * Apply suggestions from code review Co-authored-by: Andre Kiste <bergice@users.noreply.github.com> * DOCS Note about plugins in custom queries * DOCS Note about filter and custom resolvers * DOCS Note about canview paging * DOCS Updated guidance on _extend See https://github.com/silverstripe/silverstripe-graphql/issues/296 * Apply suggestions from code review Co-authored-by: Andre Kiste <bergice@users.noreply.github.com> * DOCS Pre-release warning Co-authored-by: Ingo Schommer <ingo@silverstripe.com> Co-authored-by: Andre Kiste <bergice@users.noreply.github.com> Co-authored-by: Ingo Schommer <me@chillu.com> 2020-10-19 23:56:17 +02:00			`---`
			`title: Extending the schema`
			`summary: Add new functionality to the schema`
			`---`

			`In this section of the documentation, we'll look at some advanced`
			`features for developers who want to extend their GraphQL server`
			`using custom models, middleware, and new operations.`

			`[CHILDREN]`

			`[alert]`
			`You are viewing docs for a pre-release version of silverstripe/graphql (4.x).`
			`Help us improve it by joining #graphql on the [Community Slack](https://www.silverstripe.org/blog/community-slack-channel/),`
			`and report any issues at [github.com/silverstripe/silverstripe-graphql](https://github.com/silverstripe/silverstripe-graphql).`
			`Docs for the current stable version (3.x) can be found`
			`[here](https://github.com/silverstripe/silverstripe-graphql/tree/3)`
			`[/alert]`