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Next.js 15 Guide Complet de Développement

Next.js 15 Guide Complet de Développement

Maîtrisez Next.js 15 avec App Router, Server Components et Server Actions. Apprenez les meilleures pratiques pour le développement web moderne avec React et TypeScript.

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by AntigravityAI
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# Next.js 15 Guide Complet de Développement

Créez des applications web modernes et performantes avec Next.js 15 en utilisant les dernières fonctionnalités comme App Router et Server Components.

## Configuration du Projet

### Créer un Nouveau Projet

```bash
npx create-next-app@latest mon-projet --typescript --tailwind --app
cd mon-projet
npm run dev
```

### Structure de Répertoires Recommandée

```
mon-projet/
├── src/
│   ├── app/                    # App Router (routes et pages)
│   │   ├── layout.tsx          # Layout principal
│   │   ├── page.tsx            # Page d accueil
│   │   ├── loading.tsx         # État de chargement
│   │   └── error.tsx           # Gestion des erreurs
│   ├── components/             # Composants réutilisables
│   │   ├── ui/                 # Composants UI
│   │   └── forms/              # Composants de formulaires
│   ├── lib/                    # Utilitaires et configurations
│   └── types/                  # Définitions TypeScript
└── next.config.ts              # Configuration Next.js
```

## Composants Serveur

Les composants serveur sont rendus entièrement sur le serveur et réduisent le JavaScript envoyé au client.

### Exemple de Composant Serveur

```typescript
// app/produits/page.tsx
import { obtenirProduits } from "@/lib/api";

// Ce composant est rendu entièrement sur le serveur
export default async function PageProduits() {
  // Récupérer les données directement sans useEffect
  const produits = await obtenirProduits();

  return (
    <main className="container mx-auto py-8">
      <h1 className="text-3xl font-bold mb-6">Nos Produits</h1>
      <div className="grid grid-cols-1 md:grid-cols-3 gap-6">
        {produits.map((produit) => (
          <article key={produit.id} className="border rounded-lg p-4">
            <h2 className="text-xl font-semibold">{produit.nom}</h2>
            <p className="text-gray-600">{produit.description}</p>
            <span className="text-lg font-bold text-blue-600">
              {produit.prix} €
            </span>
          </article>
        ))}
      </div>
    </main>
  );
}
```

## Actions Serveur

```typescript
// app/actions/contact.ts
"use server";

import { z } from "zod";
import { revalidatePath } from "next/cache";

const schemaContact = z.object({
  nom: z.string().min(2, "Le nom doit contenir au moins 2 caractères"),
  email: z.string().email("Adresse email invalide"),
  message: z.string().min(10, "Le message doit contenir au moins 10 caractères"),
});

export async function envoyerContact(formData: FormData) {
  const donnees = {
    nom: formData.get("nom") as string,
    email: formData.get("email") as string,
    message: formData.get("message") as string,
  };

  const resultat = schemaContact.safeParse(donnees);

  if (!resultat.success) {
    return {
      succes: false,
      erreurs: resultat.error.flatten().fieldErrors,
    };
  }

  await sauvegarderMessage(resultat.data);
  revalidatePath("/contact");
  
  return { succes: true, message: "Message envoyé avec succès" };
}
```

### Formulaire avec Action Serveur

```typescript
// components/FormulaireContact.tsx
"use client";

import { useFormState, useFormStatus } from "react-dom";
import { envoyerContact } from "@/app/actions/contact";

function BoutonEnvoyer() {
  const { pending } = useFormStatus();
  return (
    <button
      type="submit"
      disabled={pending}
      className="bg-blue-600 text-white px-6 py-2 rounded-lg disabled:opacity-50"
    >
      {pending ? "Envoi en cours..." : "Envoyer le message"}
    </button>
  );
}

export function FormulaireContact() {
  const [etat, action] = useFormState(envoyerContact, null);

  return (
    <form action={action} className="space-y-4 max-w-md">
      <div>
        <label htmlFor="nom" className="block text-sm font-medium">
          Nom
        </label>
        <input
          type="text"
          id="nom"
          name="nom"
          required
          className="mt-1 block w-full rounded-md border px-3 py-2"
        />
        {etat?.erreurs?.nom && (
          <p className="text-red-500 text-sm">{etat.erreurs.nom}</p>
        )}
      </div>

      <div>
        <label htmlFor="email" className="block text-sm font-medium">
          Adresse Email
        </label>
        <input
          type="email"
          id="email"
          name="email"
          required
          className="mt-1 block w-full rounded-md border px-3 py-2"
        />
      </div>

      <div>
        <label htmlFor="message" className="block text-sm font-medium">
          Votre Message
        </label>
        <textarea
          id="message"
          name="message"
          rows={4}
          required
          className="mt-1 block w-full rounded-md border px-3 py-2"
        />
      </div>

      <BoutonEnvoyer />

      {etat?.succes && (
        <p className="text-green-600">{etat.message}</p>
      )}
    </form>
  );
}
```

Ce guide complet aide les développeurs francophones à maîtriser Next.js 15.

When to Use This Prompt

This nextjs prompt is ideal for developers working on:

  • nextjs applications requiring modern best practices and optimal performance
  • Projects that need production-ready nextjs code with proper error handling
  • Teams looking to standardize their nextjs development workflow
  • Developers wanting to learn industry-standard nextjs patterns and techniques

By using this prompt, you can save hours of manual coding and ensure best practices are followed from the start. It's particularly valuable for teams looking to maintain consistency across their nextjs implementations.

How to Use

  1. Copy the prompt - Click the copy button above to copy the entire prompt to your clipboard
  2. Paste into your AI assistant - Use with Claude, ChatGPT, Cursor, or any AI coding tool
  3. Customize as needed - Adjust the prompt based on your specific requirements
  4. Review the output - Always review generated code for security and correctness
💡 Pro Tip: For best results, provide context about your project structure and any specific constraints or preferences you have.

Best Practices

  • ✓ Always review generated code for security vulnerabilities before deploying
  • ✓ Test the nextjs code in a development environment first
  • ✓ Customize the prompt output to match your project's coding standards
  • ✓ Keep your AI assistant's context window in mind for complex requirements
  • ✓ Version control your prompts alongside your code for reproducibility

Frequently Asked Questions

Can I use this nextjs prompt commercially?

Yes! All prompts on Antigravity AI Directory are free to use for both personal and commercial projects. No attribution required, though it's always appreciated.

Which AI assistants work best with this prompt?

This prompt works excellently with Claude, ChatGPT, Cursor, GitHub Copilot, and other modern AI coding assistants. For best results, use models with large context windows.

How do I customize this prompt for my specific needs?

You can modify the prompt by adding specific requirements, constraints, or preferences. For nextjs projects, consider mentioning your framework version, coding style, and any specific libraries you're using.

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