Next.js Server-Side Validation with Zod in Login Form🔥Next.js & MySQL App | Ep 20
Welcome to Day 20 of our full-stack Job Portal series using Next.js, MySQL, and Drizzle! In the last video, I gave you the task of adding server-side validation to the login form. Today, we're solving it together.
Learn the best way to handle Next.js server-side validation for your login form using Zod. We'll build a robust `loginSchema`, validate user input on the server, and ensure our Next.js Server Action only receives clean, type-safe data.
In this tutorial, we will:
✅ Create a Zod schema (`loginSchema`) for our email and password fields.
✅ Discuss why the login password validation is different from registration.
✅ Use Zod's `infer` feature to automatically create a TypeScript type from our schema.
✅ Implement Zod's `.safeParse()` method to validate form data *before* passing it to our Server Action.
✅ Secure our application by rejecting invalid data on the server.
This is a critical skill for building any secure, full-stack Next.js application.
🔥 **COMING UP NEXT (DAY 21):** Now that our server-side logic is secure, we'll supercharge the front-end by integrating React Hook Form for a seamless client-side validation experience!
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📂 Source Code
👉 GitHub Repo: https://github.com/thapatechnical/job-portal-nextjs
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⌛TIMELINE⏳
0:00 – Login Form Server Side Validation with Zod
1:00 – Creating Login Schema for Email & Password
1:30 – Why Password Validation Differs in Login vs Registration
2:40 – Generating TypeScript Type from Zod Schema
4:30 – Validating Data with `safeParse` on Form Submit
5:10 – What's Next: Integrating React Hook Form (Day 21)