A developer integrates authentication into a Next.js login form by implementing server actions and managing form state. The process involves creating TypeScript interfaces for error handling, configuring client-side form hooks, and debugging cookie persistence through network requests.
Length 7:14
Captions English (Generated), Spanish (Auto-translated), French (Auto-translated), Korean (Auto-translated), Portuguese (Auto-translated), Vietnamese (Auto-translated) #next.js #react #authentication #typescript #server actions #forms #coding #web development #hooks #cookies
0:00 Okay, so we're finally ready to implement that 0:03 authentication on our UI now. So let's go ahead 0:07 and head back to our existing login form. 0:10 We're gonna have to refactor it similar to how we refactored the 0:14 sign-up form. So we'll start off by wrapping 0:18 everything with a HTML form element. 0:22 So we'll go ahead and move all of our JSX inside of here. 0:27 Then I'll go ahead and move the class name up to the 0:31 root form element. 0:34 And now I'll also supply name attributes 0:37 to the email and password so that they'll be 0:41 supplied to the underlying form state when we set it up 0:44 shortly. So the email, password, and then the button 0:48 itself, we need to specify the type is of submit 0:52 so that when it's clicked, it's gonna trigger this form action. 0:56 So before we can set up the form action, we need to turn this into 0:59 a client component. So we'll use the use client 1:03 declaration, which ensures Next.js will only render 1:06 this on the 1:07 client and not the server, which is important be- because we need to 1:11 utilize this use form state hook to manage the 1:14 form state. So we'll have a const here, an array that will 1:18 destructure the state and form action out of, 1:22 and now we can call use form state where you supply... 1:26 Well, we need to implement the login server 1:29 action, of course, so 1:30 I'll just leave this as undefined for now. 1:33 And then we have the potential error object that can also come back. 1:37 So now that we have the form action, I'll supply it to the underlying 1:41 form action attribute here so that we will trigger the 1:45 server action when the form is submitted, and then we'll go ahead and 1:49 set up our error handling. So we'll have an error prop that's
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