Next.js 15 Fullstack (App Router + Server Actions) · Pelajaran

Rute Dinamis & Parameter

Pelajari cara mengimplementasikan rute dinamis untuk menangani segmen variabel dalam URL dan mengakses parameter rute.

Rute Dinamis & Parameter adalah pelajaran Next.js 15 Fullstack (App Router + Server Actions) gratis di CoddyKit. Ini adalah pelajaran 2 dari 4. Kamu bisa membaca pelajaran lengkapnya di bawah secara gratis — lalu praktikkan langsung di browser dengan editor kode bawaan dan tutor AI 24/7. Ini adalah bagian dari jalur belajar Next.js 15 Fullstack (App Router + Server Actions), dan progresmu tersinkronisasi di web dan aplikasi CoddyKit. Kursus Next.js 15 Fullstack (App Router + Server Actions) mencakup 4 pelajaran total.

Bagian dari pelajaran ini belum diterjemahkan dan ditampilkan dalam bahasa Inggris.

What are Dynamic Routes?

Imagine you have a blog with many posts. Instead of creating a separate page for each post (like /blog/post-1, /blog/post-2), you can use dynamic routes.

Dynamic routes allow you to create pages that respond to variable segments in the URL, making your application scalable and maintainable.

Defining a Basic Dynamic Route

In Next.js App Router, you define a dynamic route segment by wrapping a folder name in square brackets []. For example, to create a dynamic route for blog posts, you'd create a folder named [slug].

app/blog/[slug]/page.js

This structure will match URLs like /blog/first-post, /blog/another-article, etc.

Accessing Route Parameters

When a dynamic route is matched, the variable part of the URL becomes available as a route parameter. You can access these parameters within your page component via the params prop.

For app/blog/[slug]/page.js, the URL /blog/my-first-post would make params.slug equal to 'my-first-post'.

Demo: Simple Dynamic Page

Let's see how to create a simple dynamic page that displays the slug parameter from the URL. Place this code in app/blog/[slug]/page.js.

export default function BlogPostPage({ params }) {
  // params.slug will contain the dynamic part of the URL
  return (
    <div>
      <h1>Blog Post: {params.slug}</h1>
      <p>This content is dynamically loaded!</p>
    </div>
  );
}

Understanding Catch-all Segments

What if you need to match a path with an unknown number of segments? This is where catch-all segments come in handy. You define them using a spread syntax: [...slug].

app/docs/[...slug]/page.js

This will match URLs like /docs/a, /docs/a/b, /docs/a/b/c, etc.

Accessing Catch-all Parameters

When using a catch-all segment, the params prop will contain an array of the matched segments. So, for app/docs/[...slug]/page.js:

/docs/a -> params.slug is ['a']
/docs/a/b/c -> params.slug is ['a', 'b', 'c']

Demo: Catch-all Page

Here's how you can display all segments from a catch-all route. Place this code in app/docs/[...slug]/page.js.

export default function DocsPage({ params }) {
  // params.slug is an array of path segments
  const path = params.slug.join('/');
  return (
    <div>
      <h1>Documentation Path: /{path}</h1>
      <p>Showing content for: {path}</p>
    </div>
  );
}

Optional Catch-all Segments

Sometimes you want a catch-all segment that can also match the base path (i.e., zero segments). This is an optional catch-all, defined with double square brackets: [[...slug]].

app/users/[[...id]]/page.js

This will match /users (where params.id is undefined) AND /users/123 (where params.id is ['123']).

Demo: Optional Catch-all

This example shows an optional catch-all route that displays a user ID or 'Guest' if no ID is provided. Place this in app/users/[[...id]]/page.js.

export default function UserProfilePage({ params }) {
  // params.id will be undefined for /users, or ['123'] for /users/123
  const userId = params.id ? params.id[0] : 'Guest';
  return (
    <div>
      <h1>Welcome, {userId}</h1>
      <p>This page handles both base and dynamic paths.</p>
    </div>
  );
}

Dynamic Routes Quiz

Which of the following file structures would allow a Next.js App Router application to handle URLs like /products/electronics/laptops and access 'electronics' and 'laptops' separately?

Recap: Dynamic Routes & Params

Great job! You've learned the essentials of dynamic routing in Next.js App Router:

[slug] creates a single dynamic segment.
[...slug] creates a catch-all segment for multiple paths, returning an array.
[[...slug]] creates an optional catch-all, matching zero or more segments.
All dynamic segments are accessed via the params prop in your page.js components.

This powerful feature is key for building flexible and scalable web applications!

Pertanyaan yang Sering Diajukan

Apakah pelajaran “Rute Dinamis & Parameter” gratis?

Ya — teks lengkap “Rute Dinamis & Parameter” gratis dibaca di sini di web. Untuk praktiknya secara interaktif (editor kode bawaan dan tutor AI 24/7) dan buka sisa kursus Next.js 15 Fullstack (App Router + Server Actions), upgrade ke CoddyKit PRO. Kursus Next.js 15 Fullstack (App Router + Server Actions) mencakup 4 pelajaran total.

Apa yang akan aku pelajari di “Rute Dinamis & Parameter”?

Pelajari cara mengimplementasikan rute dinamis untuk menangani segmen variabel dalam URL dan mengakses parameter rute. Kamu berlatih Next.js 15 Fullstack (App Router + Server Actions) dengan kode praktik yang langsung kamu jalankan di browser, dan tutor AI 24/7 menjawab pertanyaanmu saat kamu mengerjakan pelajaran ini.

Apakah aku perlu pengalaman untuk memulai Next.js 15 Fullstack (App Router + Server Actions)?

Tidak diperlukan pengalaman sebelumnya. Next.js 15 Fullstack (App Router + Server Actions) di CoddyKit dirancang untuk pemula hingga pelajar tingkat lanjut, jadi kamu bisa memulai di sini atau dari awal dan belajar sesuai kecepatan kamu sendiri. Ini adalah pelajaran 2 dari 4.

Berapa lama pelajaran “Rute Dinamis & Parameter” memakan waktu?

Sebagian besar pelajaran CoddyKit memakan waktu sekitar 5–10 menit. Setiap pelajaran ringkas dan interaktif, jadi kamu membuat kemajuan stabil dan melanjutkan dari tempat kamu tinggalkan di web dan aplikasi.

Bisakah aku menulis dan menjalankan kode dalam pelajaran Next.js 15 Fullstack (App Router + Server Actions) ini?

Ya. Setiap pelajaran Next.js 15 Fullstack (App Router + Server Actions) menyertakan editor kode bawaan, jadi kamu menulis dan menjalankan kode nyata langsung di browser dan mendapatkan umpan balik AI instan — tidak diperlukan penyiapan lokal.

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