Wasp•2d ago

Is there a way to autofill the username based on the link in the login and signup forms.

I have created a system to invite a user via a link and when the user clicks on signup link he lands on signup page but the username field remains blank. I would want to pick it up from the URL query params and fill into the username field. #frontend #login

5 Replies

kapa.ai•2d ago

Hi @ComputO. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave: ---------------------- Based on the knowledge sources provided, there isn't a direct built-in way in Wasp to autofill the username from URL query parameters in the default login and signup forms. However, there are a couple of approaches you can take to achieve this functionality: 1. Custom Form Implementation: You can create your own custom signup form using Wasp's signup and login actions. This approach gives you full control over the form fields and allows you to handle URL parameters. Auth > Username & Password > Customizing the Auth Flow provides an example of how to create a custom signup form:

   import { signup, login } from 'wasp/client/auth'
   
   export function Signup() {
     const [username, setUsername] = useState('')
     const [password, setPassword] = useState('')
     
     // You can add logic here to read URL parameters and set the initial username state
     
     async function handleSubmit(event: React.FormEvent<HTMLFormElement>) {
       event.preventDefault()
       try {
         await signup({
           username,
           password,
         })
         await login(username, password)
         history.push("/")
       } catch (error: unknown) {
         setError(error as Error)
       }
     }
     
     return (
       <form onSubmit={handleSubmit}>
         {/* Your custom form fields */}
       </form>
     );
   }

   import { signup, login } from 'wasp/client/auth'
   
   export function Signup() {
     const [username, setUsername] = useState('')
     const [password, setPassword] = useState('')
     
     // You can add logic here to read URL parameters and set the initial username state
     
     async function handleSubmit(event: React.FormEvent<HTMLFormElement>) {
       event.preventDefault()
       try {
         await signup({
           username,
           password,
         })
         await login(username, password)
         history.push("/")
       } catch (error: unknown) {
         setError(error as Error)
       }
     }
     
     return (
       <form onSubmit={handleSubmit}>
         {/* Your custom form fields */}
       </form>
     );
   }

2. Using the SignupForm Component: If you prefer to use Wasp's built-in SignupForm component, you can customize it to some extent. Auth > Overview > Customizing the Signup Process shows how to use a render function to add custom fields or logic:

   import { SignupForm, FormItemGroup } from 'wasp/client/auth'
   
   export const SignupPage = () => {
     return (
       <SignupForm
         additionalFields={(form, state) => {
           // You can add logic here to read URL parameters and set the username field
           return (
             // Your custom rendering logic
           )
         }}
       />
     )
   }

   import { SignupForm, FormItemGroup } from 'wasp/client/auth'
   
   export const SignupPage = () => {
     return (
       <SignupForm
         additionalFields={(form, state) => {
           // You can add logic here to read URL parameters and set the username field
           return (
             // Your custom rendering logic
           )
         }}
       />
     )
   }

However, this method might be limited in terms of modifying the existing username field. It's worth noting that while these approaches can help you achieve your goal, they may require some additional work to handle URL parameters and modify the default behavior of Wasp's auth forms. If you need more specific guidance on implementing this feature, you might want to reach out to the Wasp community for further assistance, as mentioned in the Discord support thread. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ---------------------- Sorry @ComputO, I seem to be having a bit of trouble. Don't worry though, I've pinged my support and they will try to fix me up! :technologist: Perhaps try again in 15mins?

Filip•21h ago

Hey @ComputO. Looks like Kapa is hallucinating. You should just pluck the username from the URL query string on your signup page. @kapa.ai tell us how to do that

kapa.ai•21h ago

Let me check the knowledge base for you again. One moment! :books: ---------------------- I apologize for the confusion in my previous response. You're right, and I appreciate you pointing that out. Let me provide a more accurate and straightforward answer based on the information available in the knowledge sources. You're correct that the simplest way to autofill the username from the URL query parameters is to extract it directly on the signup page. Here's how you can do that: 1. First, customize your signup page by creating your own component instead of using the default SignupForm. You can do this by modifying your main.wasp file:

route SignupRoute { path: "/signup", to: SignupPage }
page SignupPage {
  component: import { SignupPage } from "@src/SignupPage.jsx"
}

route SignupRoute { path: "/signup", to: SignupPage }
page SignupPage {
  component: import { SignupPage } from "@src/SignupPage.jsx"
}

2. In your SignupPage.jsx (or .tsx for TypeScript), you can use the SignupForm component from Wasp and customize it to read the username from the URL:

import { SignupForm } from 'wasp/client/auth'
import { useLocation } from 'react-router-dom'

export function SignupPage() {
  const location = useLocation()
  const searchParams = new URLSearchParams(location.search)
  const usernameFromUrl = searchParams.get('username')

  return (
    <SignupForm 
      additionalFields={(form) => {
        if (usernameFromUrl) {
          form.setValue('username', usernameFromUrl)
        }
      }}
    />
  )
}

import { SignupForm } from 'wasp/client/auth'
import { useLocation } from 'react-router-dom'

export function SignupPage() {
  const location = useLocation()
  const searchParams = new URLSearchParams(location.search)
  const usernameFromUrl = searchParams.get('username')

  return (
    <SignupForm 
      additionalFields={(form) => {
        if (usernameFromUrl) {
          form.setValue('username', usernameFromUrl)
        }
      }}
    />
  )
}

This code does the following: - It imports the SignupForm component from Wasp and useLocation from React Router. - It uses useLocation to get the current URL. - It extracts the username parameter from the URL query string. - It uses the additionalFields prop of SignupForm to set the username field value if it's present in the URL. This approach allows you to autofill the username while still using Wasp's built-in SignupForm component, which handles the rest of the signup process for you. Auth > Auth UI > Auth Components > Signup Form Remember to adjust the code if you're using TypeScript or if you need to handle additional logic around the username autofill. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ---------------------- Sorry @sodic, I seem to be having a bit of trouble. Don't worry though, I've pinged my support and they will try to fix me up! :technologist: Perhaps try again in 15mins?

Filip•21h ago

Yes, I think that's mostly it (if you disregard the JSX syntax error :))

ComputOOP•20h ago

Thanks .. I'll give it a go and let you know soon if any issue ..

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Is there a way to autofill the username based on the link in the login and signup forms.

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