docs: add TanStack Start docs

Author: WiXSL

docs/TanStackStart.md

@@ -0,0 +1,231 @@
+---
+layout: default
+title: "TanStack Start Integration"
+---
+
+# TanStack Start Integration
+
+[TanStack Start](https://tanstack.com/start) is a full-stack React framework built on top of TanStack Router. React-admin supports [TanStack Router](https://tanstack.com/router/latest) as an alternative to react-router, so you can use react-admin in a TanStack Start application.
+
+## Setting Up TanStack Start
+
+Let's start by creating a new TanStack Start project. Run the following command:
+
+```bash
+npm create @tanstack/start@latest
+# or
+yarn create @tanstack/start
+```
+
+This script will ask you for more details about your project. The prompts include:
+
+- What would you like to name your project? (example: `tanstack-admin`)
+- Select toolchain
+- Select deployment adapter
+- What add-ons would you like for your project?
+- Would you like an example?
+- Initialize git repository
+- Install dependencies
+
+For this tutorial, we used the following choices in our local setup: `ESLint` toolchain, `Nitro (agnostic)` deployment adapter, `Query` add-on, and `None` for the example. You can pick different options depending on your needs.
+
+If you want to see the current list of add-ons, run:
+
+```bash
+npm create @tanstack/start@latest --list-add-ons
+# or
+yarn create @tanstack/start --list-add-ons
+```
+
+The project structure should look like this:
+
+![TanStack Start project structure](./img/tanstack-structure.png)
+
+## Setting Up React-Admin In TanStack Start
+
+Add the `react-admin` and `ra-router-tanstack` packages, as well as a data provider package. In this example, we'll use `ra-data-json-server` to connect to a test API provided by [JSONPlaceholder](https://jsonplaceholder.typicode.com).
+
+```bash
+cd tanstack-admin
+npm install react-admin ra-router-tanstack ra-data-json-server
+# or
+yarn add react-admin ra-router-tanstack ra-data-json-server
+```
+
+## Adding React-Admin At The Root
+
+TanStack Start uses file-based routing. React-admin generates dynamic routes for each resource (e.g. `/users`, `/users/:id`). To avoid “Not Found” pages, we create explicit routes for the resource paths and render the same admin component in each route.
+
+First, update the root route at `src/routes/index.tsx`:
+
+```tsx
+// in src/routes/index.tsx
+import { createFileRoute } from '@tanstack/react-router';
+import {
+    Admin,
+    Resource,
+    ListGuesser,
+    EditGuesser,
+} from 'react-admin';
+import jsonServerProvider from 'ra-data-json-server';
+import { tanStackRouterProvider } from 'ra-router-tanstack';
+
+const dataProvider = jsonServerProvider('https://jsonplaceholder.typicode.com');
+
+export const Route = createFileRoute('/')({ component: App });
+
+function App() {
+    return (
+        <Admin
+            dataProvider={dataProvider}
+            routerProvider={tanStackRouterProvider}
+        >
+            <Resource
+                name="users"
+                list={ListGuesser}
+                edit={EditGuesser}
+            />
+        </Admin>
+    );
+}
+
+export default App;
+```
+
+Then create the routes for the resource and its dynamic paths:
+
+```tsx
+// in src/routes/users.tsx
+import { createFileRoute } from '@tanstack/react-router';
+import App from './index';
+
+export const Route = createFileRoute('/users')({ component: App });
+```
+
+```tsx
+// in src/routes/users.$id.tsx
+import { createFileRoute } from '@tanstack/react-router';
+import App from './index';
+
+export const Route = createFileRoute('/users/$id')({ component: App });
+```
+
+
+You can now start the app in `development` mode:
+
+```bash
+npm run dev
+# or
+yarn dev
+```
+
+The admin should render at `/` on your dev server.
+
+![TanStack Start admin screen](./img/tanstack-admin.png)
+
+**Tip**: If you add more resources, create matching file-based routes for each resource list and edit path and point them to the same `App` component.
+
+## Removing The TanStack Header
+
+TanStack Start adds a default header in the root layout. If you want the admin to render without that header, edit `src/routes/__root.tsx` and remove the `<Header />` component from `RootDocument`.
+
+## Adding an API
+
+TanStack Start doesn't force a specific backend. If you need an API for your admin, you can:
+
+- Use an external CRUD backend like Supabase or PostgREST
+- Proxy requests through your app's server runtime (if your deployment includes one)
+
+For example, you can create a REST API with Supabase and proxy it through TanStack Start so you don't expose service keys to the browser.
+
+First, create a Supabase REST API and its associated PostgreSQL database directly on the [Supabase website](https://app.supabase.com/) (it's free for tests and low usage). Once the setup is finished, use the Supabase manager to add the following table:
+
+- `users` with fields: `id`, `name`, and `email`
+
+You can populate these tables via the Supabase UI if you want.
+
+Supabase exposes a REST API at `https://YOUR_INSTANCE.supabase.co/rest/v1`.
+
+Next, create a configuration to let the TanStack Start app connect to Supabase. Create a `.env` file:
+
+```sh
+# In `.env`
+SUPABASE_URL="https://MY_INSTANCE.supabase.co"
+SUPABASE_SERVICE_ROLE="MY_SERVICE_ROLE_KEY"
+```
+
+**Tip**: This example uses the **service role key** here and not the anonymous role. This allows mutations without dealing with authorization. **You shouldn't do this in production**, but use the [Supabase authorization](https://supabase.com/docs/guides/auth) feature instead.
+
+Time to bootstrap the API Proxy. Create a new TanStack Start route at `src/routes/api.$.ts`:
+
+```ts
+// in src/routes/api.$.ts
+import { createFileRoute } from '@tanstack/react-router'
+
+export const Route = createFileRoute('/api/$')({
+    server: {
+        handlers: {
+            GET: ({ request }) => proxy(request),
+            POST: ({ request }) => proxy(request),
+            PUT: ({ request }) => proxy(request),
+            DELETE: ({ request }) => proxy(request),
+        },
+    },
+})
+
+const API_PREFIX = '/api'
+
+const proxy = (request: Request) => {
+    const apiUrl = getSupabaseUrlFromRequestUrl(request.url)
+
+    return fetch(apiUrl, {
+        method: request.method,
+        body: request.body,
+        headers: {
+            prefer: request.headers.get('prefer') ?? '',
+            accept: request.headers.get('accept') ?? 'application/json',
+            'Accept-Encoding': '',
+            apiKey: `${process.env.SUPABASE_SERVICE_ROLE}`,
+            Authorization: `Bearer ${process.env.SUPABASE_SERVICE_ROLE}`,
+        },
+    })
+}
+
+const getSupabaseUrlFromRequestUrl = (url: string) => {
+    const startOfRequest = url.indexOf(API_PREFIX)
+    const query = url.substring(startOfRequest + API_PREFIX.length)
+    return `${process.env.SUPABASE_URL}/rest/v1${query}`
+}
+```
+
+**Tip**: Some of this code is PostgREST-specific. The `prefer` header is required to let PostgREST return one record instead of an array containing one record in response to `getOne` requests. A proxy for another CRUD API will require different parameters.
+
+Update the react-admin data provider to use the Supabase adapter instead of the JSON Server one. As Supabase provides a PostgREST endpoint, we'll use [`ra-data-postgrest`](https://github.com/raphiniert-com/ra-data-postgrest):
+
+```sh
+npm install @raphiniert/ra-data-postgrest
+# or
+yarn add @raphiniert/ra-data-postgrest
+```
+
+Finally, update your Admin dataProvider:
+
+```tsx
+// in src/routes/index.tsx
+import { Admin, Resource, ListGuesser, fetchUtils } from 'react-admin';
+import postgrestRestProvider from '@raphiniert/ra-data-postgrest';
+import { tanStackRouterProvider } from 'ra-router-tanstack';
+
+const dataProvider = postgrestRestProvider({
+    apiUrl: '/api',
+    httpClient: fetchUtils.fetchJson,
+    defaultListOp: 'eq',
+    schema: () => '',
+});
+
+// ... keep the rest of the file the same
+```
+
+## Next Steps
+
+For standalone vs embedded setups, see the [TanStack Router Integration](./TanStackRouter.md).

docs/img/tanstack-admin.png

@@ -16,6 +16,7 @@
   <li {% if page.path == 'Remix.md' %} class="active" {% endif %}><a class="nav-link" href="./Remix.html">Remix</a></li>
   <li {% if page.path == 'ReactRouterFramework.md' %} class="active" {% endif %}><a class="nav-link" href="./ReactRouterFramework.html">React Router Framework</a></li>
   <li {% if page.path == 'Deploy.md' %} class="active beginner" {% endif %}><a class="nav-link" href="./Deploy.html">Deployment</a></li>
+  <li {% if page.path == 'TanStackStart.md' %} class="active" {% endif %}><a class="nav-link" href="./TanStackStart.html">TanStack Start</a></li>
 </ul>
 
 <ul><div>Guides & Concepts</div>