tRPC con Next.js App Router
Integri tRPC senza problemi in Next.js App Router, sfruttando i server component per un recupero efficiente dei dati.
tRPC con Next.js App Router è una lezione tRPC End-to-End Type Safe APIs gratuita su CoddyKit. Questa è la lezione 1 di 4. Puoi leggere la lezione completa qui gratuitamente — poi esercitati direttamente nel browser con un editor di codice integrato e un tutor IA disponibile 24/7. Fa parte del percorso di apprendimento tRPC End-to-End Type Safe APIs, e i tuoi progressi si sincronizzano tra il web e l'app CoddyKit. Il corso tRPC End-to-End Type Safe APIs include 4 lezioni in totale.
Parti di questa lezione non sono ancora state tradotte e vengono mostrate in inglese.
tRPC & Next.js App Router
Welcome to a new era of web development with the Next.js App Router! This lesson will guide you through integrating tRPC into this powerful architecture.
The App Router introduces new paradigms like Server Components and Client Components. tRPC helps you maintain end-to-end type safety across these different rendering environments.
Understanding App Router Basics
Before diving into tRPC, let's quickly recap the App Router's core concepts:
- Server Components: Rendered on the server, ideal for data fetching and static content. They don't have state or interactivity.
- Client Components: Rendered on the client, enabling interactivity, state, and browser APIs. They are marked with
'use client';.
tRPC plays a key role in making data fetching type-safe, regardless of whether you're in a Server or Client Component.
The tRPC App Router Adapter
To integrate tRPC with the Next.js App Router, you'll use the @trpc/next/app-router adapter. This package provides utilities specifically designed for this environment.
It handles the nuances of calling tRPC procedures from both Server Components (direct calls) and Client Components (via React Query hooks).
Server-side tRPC Setup
First, you need to expose your tRPC API routes within the app directory. This typically involves creating a route.ts file (e.g., app/api/trpc/[trpc]/route.ts).
The adapter helps configure your tRPC server to work seamlessly with Next.js API routes, handling incoming requests and routing them to your tRPC procedures.
Data Fetching in Server Components
One of the biggest advantages of the App Router is fetching data directly in Server Components. With tRPC, this means you can call your backend procedures without any client-side JavaScript.
You'll create a special server-side tRPC client that allows you to call procedures directly, similar to calling a function, all while maintaining type safety.
Server Component Fetching Demo
Here's how you can fetch data using tRPC directly inside a Next.js Server Component (e.g., app/page.tsx). Notice there are no hooks used here.
// app/page.tsx (Server Component)
import { createTRPCProxyClient, httpBatchLink } from '@trpc/client';
import type { AppRouter } from '@/server/routers/_app'; // Your backend router type
// Create a server-side tRPC client for direct usage
const serverClient = createTRPCProxyClient<AppRouter>({
links: [
httpBatchLink({
url: 'http://localhost:3000/api/trpc', // Your tRPC API endpoint
}),
],
});
export default async function HomePage() {
// Fetch data directly in a Server Component
const greeting = await serverClient.example.hello.query({
text: 'from Server Component!'
});
return (
<div>
<h1>{greeting}</h1>
<p>This content is rendered on the server.</p>
</div>
);
}Client-side tRPC Setup
For Client Components, you'll still need to set up a client-side tRPC provider. This is typically done in your root layout (e.g., app/layout.tsx) by wrapping your app with a 'use client'; component that provides the tRPC client.
This provider makes tRPC's React Query hooks available to all Client Components.
Data Fetching in Client Components
Inside a Client Component, you'll use tRPC's React Query hooks (like useQuery for fetching or useMutation for modifying data) just as you would in a traditional React app.
Remember to mark your component with 'use client'; at the top of the file to ensure it runs on the client.
Client Component Fetching Demo
This example shows a Client Component (e.g., app/client-page/page.tsx) fetching data using tRPC's useQuery hook. This component would be rendered client-side.
// app/client-page/page.tsx (Client Component)
'use client'; // Mark as a Client Component
import { createTRPCReact } from '@trpc/react-query';
import type { AppRouter } from '@/server/routers/_app'; // Your backend router type
// Initialize tRPC client for React hooks
const trpc = createTRPCReact<AppRouter>();
export default function ClientPage() {
// Use tRPC hooks to fetch data on the client
const { data, isLoading, error } = trpc.example.hello.useQuery({
text: 'from Client Component!'
});
if (isLoading) return <p>Loading client data...</p>;
if (error) return <p>Error: {error.message}</p>;
return (
<div>
<h1>{data}</h1>
<p>This data was fetched client-side with React Query.</p>
</div>
);
}Choosing Server vs. Client Fetching
When should you fetch data in a Server Component versus a Client Component?
- Server Components: Ideal for initial data loads, static content, and data that doesn't need client-side re-fetching or interactivity. Reduces client bundle size.
- Client Components: Necessary for interactive features, real-time updates, and data that changes based on user input. Utilizes React Query's caching and re-fetching benefits.
Often, a hybrid approach yields the best performance and user experience.
Quick Check: App Router Fetching
You want to fetch initial, non-interactive data for a blog post directly on the server to improve page load performance. Which component type and tRPC usage pattern would be most appropriate?
Recap: tRPC in App Router
Great job! You've learned how to integrate tRPC with the Next.js App Router.
- tRPC provides end-to-end type safety for both Server Components and Client Components.
- Use a server-side tRPC client for direct data fetching in Server Components.
- Use React Query hooks (via a client-side provider) for interactive data fetching in Client Components.
- Choosing between server and client fetching depends on your performance and interactivity needs.
This hybrid approach allows you to build robust, type-safe Next.js applications!
Impara tRPC End-to-End Type Safe APIs con un tutor IA — gratis
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- Corsi
- 10
- Lezioni
- 40
Domande Frequenti
La lezione «tRPC con Next.js App Router» è gratuita?
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Cosa imparerò in «tRPC con Next.js App Router»?
Integri tRPC senza problemi in Next.js App Router, sfruttando i server component per un recupero efficiente dei dati. Eserciti tRPC End-to-End Type Safe APIs con codice pratico che esegui direttamente nel browser, e un tutor IA 24/7 risponde alle tue domande mentre lavori sulla lezione.
Ho bisogno di esperienza per iniziare tRPC End-to-End Type Safe APIs?
Non è richiesta alcuna esperienza precedente. tRPC End-to-End Type Safe APIs su CoddyKit è strutturato per principianti e studenti avanzati, quindi puoi iniziare da qui o dall'inizio e procedere al tuo ritmo. Questa è la lezione 1 di 4.
Quanto tempo richiede la lezione «tRPC con Next.js App Router»?
La maggior parte delle lezioni CoddyKit richiede circa 5–10 minuti. Ogni lezione è breve e interattiva, quindi fai progressi costanti e riprendi esattamente da dove hai lasciato su web e app.
Posso scrivere ed eseguire codice in questa lezione tRPC End-to-End Type Safe APIs?
Sì. Ogni lezione tRPC End-to-End Type Safe APIs include un editor di codice integrato, quindi scrivi ed esegui codice reale direttamente nel tuo browser e ricevi feedback istantaneo dall'IA — nessuna configurazione locale necessaria.
Tutte le lezioni di questo corso
- tRPC con Next.js App Router
- Integrazione avanzata con React Query
- Server component e recupero dati con tRPC
- Aggiornamenti ottimistici con le mutation tRPC