Server action database mutations in NextJS - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is a server action in Next.js?

A server action is a special function that runs on the server to handle tasks like database updates or form submissions without exposing sensitive logic to the client.

beginner

How do server actions help with database mutations in Next.js?

Server actions let you securely perform database changes directly on the server, avoiding client-side exposure and improving security and performance.

intermediate

Which keyword is used to mark a function as a server action in Next.js?

The function is marked with the special directive `'use server'` at the top of the file or as a top-level string literal before the function.

intermediate

Why should database mutations be done inside server actions rather than client components?

Doing mutations inside server actions keeps your database credentials safe, prevents unauthorized access, and reduces the risk of exposing sensitive logic to users.

intermediate

What happens after a server action completes a database mutation in Next.js?

After completion, the server action can return data or trigger UI updates by revalidating data or refreshing components on the client side.

What directive marks a function as a server action in Next.js?

A 'use strict'

B 'use client'

C 'use server'

D 'use database'

The 'use server' directive tells Next.js that the function runs on the server.

Where do server actions run in Next.js?

A On the server

B On the client browser

C In a web worker

D In the database

Server actions run on the server to securely handle tasks like database mutations.

Why should database mutations be done in server actions?

A To improve client performance

B To keep database credentials secure

C To expose database credentials

D To run code faster on the client

Server actions keep sensitive data like database credentials safe by running on the server.

What can a server action return after a mutation?

A Data or nothing

B Client-side scripts

C UI components

D Only error messages

Server actions can return data or nothing, which can be used to update the UI.

Which of these is NOT a benefit of server actions for database mutations?

A Improved security

B Better performance

C Cleaner code separation

D Direct client database access

Server actions prevent direct client database access to protect security.

Explain how server actions in Next.js help secure database mutations.

Think about where the code runs and what it protects.

Describe the steps to create a server action that updates a database record in Next.js.

Focus on function setup, database call, and response.