how to pass session from next-auth to client ? | Convex Community | Page 1

desert leaf Jun 27, 2024, 9:27 AM

#

I'm trying to pass current session from next -auth to convex.setAuth but null is returned despite i'm logged in

"use client";

import { ConvexProvider, ConvexReactClient } from "convex/react";
import { Session } from "next-auth";
import { ReactNode, useEffect } from "react";
import { Toaster } from "sonner";

const convex = new ConvexReactClient(process.env.NEXT_PUBLIC_CONVEX_URL!);

type Props = {
session: Session | null;
children: ReactNode;
};

export default function Providers({ session, children }: Props) {
useEffect(() => {
const fetchToken = async () => {
if (session && session.user) {
return session.user.email;
}
return null;
};

convex.setAuth(fetchToken, (isAuthenticated) => {
  console.log(`Authentication status changed: ${isAuthenticated}`);
});

}, [session]);

return (
<ConvexProvider client={convex}>
<Toaster position="bottom-center" duration={3000} closeButton />
{children}
</ConvexProvider>
);
}

midnight ospreyBOT Jun 27, 2024, 9:27 AM

#

Hi @desert leaf. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave:

#

To pass the session from NextAuth to the Convex client, you need to replace your ConvexProvider with ConvexProviderWithAuth. This is shown in the Convex Adapter for Auth.js (NextAuth) Setup Guide (https://stack.convex.dev/nextauth-adapter#provide-the-jwt-to-the-convex-react-client).

Here is the code snippet from the guide:

"use client";

import { ConvexProviderWithAuth, ConvexReactClient } from "convex/react";
import { SessionProvider, useSession } from "next-auth/react";
import { Session } from "next-auth";
import { ReactNode, useMemo } from "react";

const convex = new ConvexReactClient(process.env.NEXT_PUBLIC_CONVEX_URL!);

export default function ConvexClientProvider({
  children,
  session,
}: {
  children: ReactNode;
  session: Session | null;
}) {
  return (
    <SessionProvider session={session}>
      <ConvexProviderWithAuth client={convex} useAuth={useAuth}>
        {children}
      </ConvexProviderWithAuth>
    </SessionProvider>
  );
}

function useAuth() {
  const { data: session, update } = useSession();

  const convexToken = convexTokenFromSession(session);
  return useMemo(
    () => ({
      isLoading: false,
      isAuthenticated: session !== null,
      fetchAccessToken: async ({
        forceRefreshToken,
      }: {
        forceRefreshToken: boolean;
      }) => {
        if (forceRefreshToken) {
          const session = await update();

          return convexTokenFromSession(session);
        }
        return convexToken;
      },
    }),
    // We only care about the user changes, and don't want to
    // bust the memo when we fetch a new token.
    // eslint-disable-next-line react-hooks/exhaustive-deps
    [JSON.stringify(session?.user)],
  );
}

function convexTokenFromSession(session: Session | null): string | null {
  return session?.convexToken ?? null;
}

#

In this code, ConvexProviderWithAuth is used to wrap the children components. The useAuth function is passed to ConvexProviderWithAuth as a prop. This function uses the useSession hook from NextAuth to get the current session and updates the Convex token accordingly.

Make sure to pass the session object from the server to the client component. This can be done in your App Router or Pages Router. Here is an example from the guide:

export default async function LoggedInLayout({
	children,
}: {
	children: ReactNode;
}) {
	const session = await auth();
	return (
		<>
			<SignOut />
			<ConvexClientProvider session={session}>{children}</ConvexClientProvider>
		</>
	);
}

In this example, the `session` is passed to `ConvexClientProvider` as a prop. The `auth` function is used to get the current session.

Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:

#

@desert leaf kapa.ai is still learning and improving, please let us know how it did by reacting below

desert leaf Jun 27, 2024, 9:37 AM

#

@midnight osprey how to use user autenticated from convex query

midnight ospreyBOT Jun 27, 2024, 9:37 AM

#

Let me check the knowledge base for you. One moment! :books:

#

To use the authenticated user from a Convex query, you can use the auth property of the QueryCtx object within a Convex function. This allows you to access information about the currently logged-in user. Here is an example from the Convex documentation (https://docs.convex.dev/auth/functions-auth):

import { mutation } from "./_generated/server";  
  
export const myMutation = mutation({  
  args: {  
    // ...  
  },  
  handler: async (ctx, args) => {  
    const identity = await ctx.auth.getUserIdentity();  
    if (identity === null) {  
      throw new Error("Unauthenticated call to mutation");  
    }  
    //...  
  },  
});

In this example, ctx.auth.getUserIdentity() is used to get the identity of the currently logged-in user. If no user is logged in, identity will be null.

You can also use the authenticated user in your React components. Here is an example from the Convex documentation (https://docs.convex.dev/auth/database-auth#waiting-for-current-user-to-be-stored):

import { useConvexAuth, useQuery } from "convex/react";  
import { api } from "../convex/_generated/api";  
  
export function useCurrentUser() {  
  const { isLoading, isAuthenticated } = useConvexAuth();  
  const user = useQuery(api.users.current);  
  // Combine the authentication state with the user existence check  
  return {  
    isLoading: isLoading || (isAuthenticated && user === null),  
    isAuthenticated: isAuthenticated && user !== null,  
  };  
}

#

In this example, `useConvexAuth()` is used to get the authentication state, and `useQuery(api.users.current)` is used to get the current user. The `useCurrentUser` hook then returns an object containing the loading state and whether the user is authenticated.

Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:

#

@desert leaf kapa.ai is still learning and improving, please let us know how it did by reacting below

desert leaf Jun 27, 2024, 9:39 AM

#

@midnight osprey i would like to use user authenticated to this query instad of passing "id" as arg export const getUser = zQuery({
args: {
id: zid("users"),
},
handler: async (ctx, { id }) => {
return await ctx.db.get(id);
},
});

midnight ospreyBOT Jun 27, 2024, 9:39 AM

#

Let me check the knowledge base for you. One moment! :books:

#

To use the authenticated user in your query instead of passing the "id" as an argument, you can use the auth property of the ctx object to get the user's identity. Here's how you can modify your query:

import { query } from "./_generated/server";

export const getUser = query({
  args: {},
  handler: async (ctx) => {
    const identity = await ctx.auth.getUserIdentity();
    if (!identity) {
      throw new Error("Unauthenticated");
    }

    const userId = identity.subject;

    const user = await ctx.db
      .query("users")
      .withIndex("by_user", (q) => q.eq("userId", userId))
      .first();

    if (!user) {
      throw new Error("User not found");
    }

    return user;
  },
});

In this example, ctx.auth.getUserIdentity() is used to get the identity of the currently logged-in user. If no user is logged in, identity will be null and an error is thrown. The userId is then used to query the database for the user's information.

Please note that this assumes you have a "users" table in your database and a "by_user" index that maps "userId" to user documents. You may need to adjust the query to match your actual database schema.

This approach is based on the Convex documentation (https://docs.convex.dev/auth/functions-auth) and a Discord support thread (https://discord.com/channels/1019350475847499849/1216003221445939330).

Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:

#

@desert leaf kapa.ai is still learning and improving, please let us know how it did by reacting below

desert leaf Jun 27, 2024, 10:10 AM

#

@midnight osprey await ctx.auth.getUserIdentity() return null from server to client

export const getUser = zMutation({
args: {},
handler: async (ctx, {}) => {
const identify = await ctx.auth.getUserIdentity();
return identify?.subject;
},
});

but i'm logged in, and when i use useSession, i session is returned...

midnight ospreyBOT Jun 27, 2024, 10:10 AM

#

Let me check the knowledge base for you. One moment! :books:

#

The ctx.auth.getUserIdentity() method can return null if the client is not authenticated with the Convex backend at the time the query is called. This can happen even if the user is logged in, as it takes some time for the client to authenticate with the Convex backend.

To handle this, you can either:

Use the Authenticated component from convex/react to wrap the component that includes the useQuery call. This ensures that the component doesn't render until the client-server authentication handshake is complete. Here's an example:

import { Authenticated } from 'convex/react';

<Authenticated>
  <YourComponent />
</Authenticated>

Or return null or some other "sentinel" value from the query and handle it on the client. This approach is slightly faster, as it avoids an additional roundtrip.

Here's an example:

export const getUser = query({
  handler: async (ctx) => {
    const identity = await ctx.auth.getUserIdentity();
    if (!identity) {
      return null;
    }
    return identity.subject;
  },
});

Then, in your component, you can handle the null value:

const user = useQuery(api.user.getUser);
if (user === null) {
  // handle unauthenticated state
} else {
  // handle authenticated state
}

These solutions are based on the Convex documentation (https://docs.convex.dev/auth/debug) and a Discord support thread (https://discord.com/channels/1019350475847499849/1200540338566213642).

Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:

#

@desert leaf kapa.ai is still learning and improving, please let us know how it did by reacting below

desert leaf Jun 27, 2024, 10:18 AM

#

@midnight osprey this is my Providers component :
"use client";

import { useAuth } from "@/hooks/useAuth";
import { ConvexProviderWithAuth, ConvexReactClient } from "convex/react";
import { ReactNode } from "react";
import { Toaster } from "sonner";

const convex = new ConvexReactClient(process.env.NEXT_PUBLIC_CONVEX_URL!);

type Props = {
children: ReactNode;
};

export default function Providers({ children }: Props) {
return (
<ConvexProviderWithAuth client={convex} useAuth={useAuth}>
<Toaster position="bottom-center" duration={3000} closeButton />
{children}
</ConvexProviderWithAuth>
);
}

This is my useAuth function :
"import { useSession } from "next-auth/react";
import { useMemo } from "react";

export const useAuth = () => {
const { data: session, update } = useSession();

const convexToken = session?.user?.email ?? null;

return useMemo(
() => ({
isLoading: false,
isAuthenticated: session !== null,
fetchAccessToken: async ({
forceRefreshToken,
}: {
forceRefreshToken: boolean;
}) => {
if (forceRefreshToken) {
const session = await update();
return session?.user?.email ?? null;
}
return convexToken;
},
}),
// eslint-disable-next-line react-hooks/exhaustive-deps
[JSON.stringify(session?.user)],
);
};"

This is my convex query call :
export const getUser = zMutation({
args: {},
handler: async (ctx, {}) => {
const identify = await ctx.auth.getUserIdentity();
return identify?.subject;
},
});

midnight ospreyBOT Jun 27, 2024, 10:18 AM

#

Let me check the knowledge base for you. One moment! :books:

#

Your setup seems correct. You are using ConvexProviderWithAuth in your Providers component and passing the useAuth hook to it. The useAuth hook is correctly implemented to return an object with isLoading, isAuthenticated, and fetchAccessToken properties.

The fetchAccessToken function is correctly implemented to return the convexToken (which is the user's email in this case) when forceRefreshToken is false, and to update the session and return the new convexToken when forceRefreshToken is true.

Your getUser mutation is also correctly implemented to return the subject of the user's identity.

However, please note that the subject (or sub) field of the user's identity is typically used to store the user's ID, not their email. In your useAuth hook, you are setting convexToken to session?.user?.email, which means that the user's email is being used as the sub field. If you want to use the user's ID instead, you should change this to session?.user?.id or whatever field you are using to store the user's ID.

Also, please ensure that the NEXT_PUBLIC_CONVEX_URL environment variable is correctly set to your Convex server's URL.

If you are still having issues, it might be helpful to add some logging to your useAuth hook and getUser mutation to help debug the issue. For example, you could log the session object and the convexToken in the useAuth hook, and the identify object in the getUser mutation.

These solutions are based on the Convex documentation (https://stack.convex.dev/nextauth-adapter#provide-the-jwt-to-the-convex-react-client) and a Discord support thread (https://discord.com/channels/1019350475847499849/1216003221445939330).

Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:

#

@desert leaf kapa.ai is still learning and improving, please let us know how it did by reacting below

desert leaf Jun 27, 2024, 10:27 AM

#

@spiral vale @midnight osprey Hi Michal, i'm don't know if you can help me, but i'm trying to pass my user session from authjs to ConvexProviderWithAuth.

As you can see above, my code is correct, useAuth return this object :
{isLoading: false, isAuthenticated: true, fetchAccessToken: ƒ}

and i can log session everywhere in my app except in my convex users query ...
ctx.auth.getUserIdentity(); return null ...

I don't know why and how to debug it ...

midnight ospreyBOT Jun 27, 2024, 10:27 AM

#

Let me check the knowledge base for you. One moment! :books:

#

It seems like you're experiencing an issue where ctx.auth.getUserIdentity() is returning null in your Convex query, even though you're authenticated and your session is available in other parts of your app.

This issue often occurs when a query is subscribed to via useQuery in React, without waiting for the client to be authenticated. Even if the user has been logged in previously, it takes some time for the client to authenticate with the Convex backend. Therefore, on page load, ctx.auth.getUserIdentity() called within a query returns null.

Here are a couple of ways to handle this:

Use the Authenticated component from convex/react to wrap the component that includes the useQuery call. This ensures that the component doesn't render until the client-server authentication handshake is complete. Here's an example:

import { Authenticated } from 'convex/react';

<Authenticated>
  <YourComponent />
</Authenticated>

Return null or some other "sentinel" value from the query and handle it on the client. This approach is slightly faster, as it avoids an additional roundtrip. Here's an example:

export const getUser = query({
  handler: async (ctx) => {
    const identity = await ctx.auth.getUserIdentity();
    if (!identity) {
      return null;
    }
    return identity.subject;
  },
});

Then, in your component, you can handle the null value:

const user = useQuery(api.user.getUser);
if (user === null) {
  // handle unauthenticated state
} else {
  // handle authenticated state
}

If these solutions don't help, you can follow the authentication debugging guide (https://docs.convex.dev/auth/debug) provided in the Convex documentation. This guide provides a step-by-step process to debug and resolve authentication issues.

#

These solutions are based on the Convex documentation (https://docs.convex.dev/auth/debug) and a Discord support thread (https://discord.com/channels/1019350475847499849/1200540338566213642).

Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:

#

@desert leaf kapa.ai is still learning and improving, please let us know how it did by reacting below

spiral vale Jun 27, 2024, 10:40 AM

#

@desert leaf https://stack.convex.dev/nextauth-adapter#provide-the-jwt-to-the-convex-react-client

Stack

Convex Adapter for Auth.js (NextAuth) Setup Guide

Learn how to install and configure the Convex adapter for Auth.js as part of getting set up with Convex and Next.js.

#how to pass session from next-auth to client ?

In this example, the session is passed to ConvexClientProvider as a prop. The auth function is used to get the current session.

Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:

In this example, useConvexAuth() is used to get the authentication state, and useQuery(api.users.current) is used to get the current user. The useCurrentUser hook then returns an object containing the loading state and whether the user is authenticated.

Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:

This approach is based on the Convex documentation (https://docs.convex.dev/auth/functions-auth) and a Discord support thread (https://discord.com/channels/1019350475847499849/1216003221445939330).

Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:

These solutions are based on the Convex documentation (https://docs.convex.dev/auth/debug) and a Discord support thread (https://discord.com/channels/1019350475847499849/1200540338566213642).

Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:

These solutions are based on the Convex documentation (https://stack.convex.dev/nextauth-adapter#provide-the-jwt-to-the-convex-react-client) and a Discord support thread (https://discord.com/channels/1019350475847499849/1216003221445939330).

Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:

These solutions are based on the Convex documentation (https://docs.convex.dev/auth/debug) and a Discord support thread (https://discord.com/channels/1019350475847499849/1200540338566213642).

Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:

In this example, the `session` is passed to `ConvexClientProvider` as a prop. The `auth` function is used to get the current session.

In this example, `useConvexAuth()` is used to get the authentication state, and `useQuery(api.users.current)` is used to get the current user. The `useCurrentUser` hook then returns an object containing the loading state and whether the user is authenticated.