Wasp-lang•2w ago

How to use authUser conditionally in a react page?

I need to show a page, not all of it , if user is logged in, then I would need to show all of the content. Not sure how I can achieve this, because when I define a route in wasp file, I can access the user object unless I make authRequired as true.

10 Replies

kapa.ai•2w ago

Hi @p4j4r5. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave: ---------------------- To conditionally use the auth user in a React page without setting authRequired: true in your Wasp file, you can use the useAuth hook provided by Wasp. This approach allows you to check the user's authentication status and render content accordingly. Here's how you can achieve this: 1. Import the useAuth hook in your React component:

import { useAuth } from 'wasp/client/auth'

import { useAuth } from 'wasp/client/auth'

2. Use the hook in your component to get the user data:

const { data: user } = useAuth()

const { data: user } = useAuth()

3. Conditionally render content based on the user's authentication status:

if (user) {
  // Render content for authenticated users
} else {
  // Render content for non-authenticated users
}

if (user) {
  // Render content for authenticated users
} else {
  // Render content for non-authenticated users
}

Here's a complete example of how your React component might look:

import React from 'react'
import { useAuth } from 'wasp/client/auth'

export function MyPage() {
  const { data: user } = useAuth()

  return (
    <div>
      <h1>My Page</h1>
      {user ? (
        <>
          <p>Welcome, {user.username}!</p>
          {/* Add more authenticated-only content here */}
        </>
      ) : (
        <p>Please log in to see full content.</p>
      )}
      {/* Common content for both authenticated and non-authenticated users */}
    </div>
  )
}

import React from 'react'
import { useAuth } from 'wasp/client/auth'

export function MyPage() {
  const { data: user } = useAuth()

  return (
    <div>
      <h1>My Page</h1>
      {user ? (
        <>
          <p>Welcome, {user.username}!</p>
          {/* Add more authenticated-only content here */}
        </>
      ) : (
        <p>Please log in to see full content.</p>
      )}
      {/* Common content for both authenticated and non-authenticated users */}
    </div>
  )
}

This approach allows you to show different content based on the user's authentication status without setting authRequired: true in your Wasp file. The useAuth hook will handle checking the user's authentication status for you. Using the useAuth hook (https://wasp-lang.dev/docs/auth/overview#using-the-useauth-hook) provides more details on this method. Remember that if you use this approach, you'll need to handle security checks on the server-side as well, since the page itself is accessible to non-authenticated users. Make sure to protect your API endpoints and server-side operations appropriately. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------

p4j4r5OP•2w ago

Thanks @kapa.ai Seems this should work for me. Will give this a try

kapa.ai•2w ago

Let me check the knowledge base for you again. One moment! :books: ---------------------- You're welcome! I'm glad the suggestion seems helpful for your use case. The useAuth hook is indeed a flexible way to handle conditional rendering based on authentication status without requiring authRequired: true for the entire page. As you implement this approach, keep in mind a couple of important points: 1. The useAuth hook is designed for client-side use, so it's perfect for React components as described in the Wasp documentation (https://wasp-lang.dev/docs/auth/overview#using-the-useauth-hook). 2. Remember to implement proper server-side checks for any sensitive operations or data fetching, as the client-side checks alone are not sufficient for security as mentioned in the Wasp server-side authentication documentation (https://wasp-lang.dev/docs/auth/overview#using-the-contextuser-object). If you encounter any issues or have more questions as you implement this solution, feel free to ask. Good luck with your implementation! ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ---------------------- Sorry @p4j4r5, 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?

Sven•2w ago

Hi man you would import import { type User } from "wasp/entities"; then inject it into the compontent:

export function yourcomponent({ user }: { user: User }) {

export function yourcomponent({ user }: { user: User }) {

Then you can acces the user entity for example the isAdmin field:

 if (!(user.isAdmin){
...
}

 if (!(user.isAdmin){
...
}

p4j4r5OP•2w ago

Thanks @Sven Using const { data: user } = useAuth() works well. The suggestion you made seems to fail for me because I don't want authentication and the user object isn't injected into Props. Then typescript check fails.

Sven•2w ago

Yeah true If you put useauth in main.wasp it works no? So how do you do it now exactly and why?

p4j4r5OP•2w ago

I use useAuth() hook like this

    const { data: user } = useAuth()

And then in useEffect, I conditionally call two different endpoints based on user variable and the authRequired on PageRoute within main.wasp is set to false

Sven•2w ago

Could you show ur logic on how to check user stuff Actually curious Want to know difference between ur implementation and mine

p4j4r5OP•2w ago

This is how I do

  import { getFullDetails, getMeteredDetails } from 'wasp/client/operations';

  import { getFullDetails, getMeteredDetails } from 'wasp/client/operations';

    const { data: user } = useAuth()
    const [metered, setMetered] = React.useState<boolean>(false);
    React.useEffect(() => {
        // Replace with your data fetching logic
        const fetchData = async () => {
            try {
                if (user) {
                    const response = await getFullDetails({ id });
                    setMetered(false);

                } else {
                    const response = await getMeteredDetails({ id });
                    setMetered(true);
                }

            } catch (error) {
                console.error( error);
            }
        }
        fetchData();
    }, [match.params.id, user]);

    const { data: user } = useAuth()
    const [metered, setMetered] = React.useState<boolean>(false);
    React.useEffect(() => {
        // Replace with your data fetching logic
        const fetchData = async () => {
            try {
                if (user) {
                    const response = await getFullDetails({ id });
                    setMetered(false);

                } else {
                    const response = await getMeteredDetails({ id });
                    setMetered(true);
                }

            } catch (error) {
                console.error( error);
            }
        }
        fetchData();
    }, [match.params.id, user]);

in JSX I display data based on the state of metered variable

{metered && (<div> metered content </div> )

{metered && (<div> metered content </div> )

Filip•7d ago

Hi @p4j4r5, from what I got, useAuth worked for you? That is the proper way to do it btw

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How to use authUser conditionally in a react page?