react-server-actions

Implement React Server Actions in Next.js 14+ for secure, progressively enhanced form handling and server mutations without API routes. Use when handling form submissions, performing server-side mutations, implementing progressive enhancement, creating actions that work without JavaScript, validating data on the server, revalidating cached data after mutations, handling file uploads server-side, implementing optimistic UI updates, or building forms that gracefully degrade without client-side JavaScript.

React Server Actions - Form Handling

When to use this skill

Handling form submissions in Next.js 14+ applications
Performing server-side data mutations without API routes
Implementing progressive enhancement for forms
Creating actions that work without client-side JavaScript
Validating form data securely on the server
Revalidating Next.js cache after data mutations
Handling file uploads with server-side processing
Implementing optimistic UI updates with useOptimistic
Building accessible forms with server-first architecture
Integrating with database operations directly
Managing form state with useFormState hook
Creating secure mutations with server-only code

When to use this skill

Implementing forms, mutations in Next.js App Router.
When working on related tasks or features
During development that requires this expertise

Use when: Implementing forms, mutations in Next.js App Router.

Server Action

```typescript 'use server';

export async function createPost(formData: FormData) { const title = formData.get('title'); await db.post.create({ data: { title } }); revalidatePath('/posts'); } ```

Resources

Server Actions