Partial reload cookbook

Use partial HTML responses for sub-100ms UI updates without a full page reload. Tyravel supports Turbo Drive streams and HTMX-style fragment swaps via View.partial() and Response.partial().

Basic fragment

Return only the updated markup:

import { Route, View } from '@tyravel/core';

Route.get('/posts/:id/comments', async ({ params }) => {
  const post = await Post.find(params.id);
  return View.partial('posts.comments', { post });
});

View.partial() renders the view (or an optional fragment) and wraps it with Response.partial(), setting headers for Turbo/HTMX clients.

Named fragment

When the view defines @fragment('list'):

return View.partial('posts.comments', { post }, { fragment: 'list' });

Turbo Stream response

Emit a Turbo Stream payload for turbo-stream content type:

return Response.partial('<turbo-stream action="replace" target="comments">…</turbo-stream>', {
  turboStream: true,
});

HTMX swap

HTMX reads the response body and swaps the target element. Return the fragment only — no layout shell:

<div id="comments">
  @each(comment in comments)
    <article>{{ comment.body }}</article>
  @endeach
</div>

Client markup:

<button
  hx-get="/posts/1/comments"
  hx-target="#comments"
  hx-swap="innerHTML"
>
  Refresh
</button>

When to use partial vs full SSR

Approach	Best for
View.partial()	Small DOM updates, infinite scroll, inline edits
View.streamSsr()	First paint with streaming shell + slow sections
View.render()	Full page navigations, SEO-critical content

Related

• Views & templating — View.partial() and @fragment
• Performance — caching hot read paths behind partial endpoints