---
title: "Extending · Leiho docs"
description: "Adapters, deployment drivers, filters."
url: https://leiho.dev/docs/extending
lang: en
updated: 2026-11-04
---
Reference

# Extending

Adapters, deployment drivers, filters.

- **Other field plugins**: implement `Leiho_Adapter_Interface` and register it with the `leiho_adapters` filter (Meta Box, JetEngine, Pods…).
- **Other deployment targets**: implement `Leiho_Deploy_Driver_Interface` and plug it in with `leiho_deploy_driver`.
- **WYSIWYG preview**: `leiho_wysiwyg_render` replaces `wpautop()` with your front end's actual rendering.
- **Content API**: `leiho_content_item` adds or removes data on each item (SEO, author…), `leiho_content_post_types` changes the served types, `leiho_content_html` the rendered HTML. `leiho_content_cache` turns the cache on or off, `leiho_content_cache_control` changes the `Cache-Control` header, `leiho_purge_third_party_caches` (false) skips the built-in purges. An adapter implementing `Leiho_Content_Adapter_Interface` feeds the content API and the types.
- **Automatic publishing**: the `leiho_content_changed` action fires when served content changes.

Updated November 4, 2026[Something unclear on this page? Tell us →](https://github.com/pixelersagency/leiho/issues/new?title=Docs%3A%20Extending)