Nextjs Role permission middleware | Convex Community | Page 1

summer trellis Jan 28, 2025, 6:19 AM

#

How I can get the current user on my nexjs on the middelware file I have to check roles and permission

native mapleBOT Jan 28, 2025, 6:19 AM

#

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

#

To implement role-based access control (RBAC) and check permissions in your Next.js middleware with Convex, you can follow these steps:

First, you need to get the current user's authentication token in the middleware.
Then, you can use this token to fetch the user's data, including their roles, from Convex.

Here's how you can do this:

In your middleware file, use the convexAuthNextjsToken() function to get the authentication token:

import { convexAuthNextjsToken } from "@convex-dev/auth/nextjs/server";

export default function middleware(request: NextRequest) {
  const token = convexAuthNextjsToken();
  // ... rest of your middleware code
}

Use this token to fetch the user data from Convex:

import { fetchQuery } from "@convex-dev/auth/nextjs/server";
import { api } from "../../convex/_generated/api";

export default async function middleware(request: NextRequest) {
  const token = convexAuthNextjsToken();
  const userData = await fetchQuery(api.users.getCurrentUser, {}, { token });
  
  // Now you can check roles and permissions
  if (userData.roles.includes("admin")) {
    // Allow access to admin routes
  } else {
    // Redirect or deny access
  }
}

Note that you'll need to create a Convex query function (like getCurrentUser in the example above) that returns the user's data, including their roles.

Remember to handle cases where the user might not be authenticated, and ensure your Convex functions properly check authentication before returning sensitive data.

For more detailed information on implementing this, you can refer to these resources:

#

These documents provide more context on how to work with authentication in Convex and Next.js.

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

#

@summer trellis Kapa.ai is still learning and improving, please let me know how I did by reacting below.

summer trellis Jan 28, 2025, 6:21 AM

#

I got Module '"@convex-dev/auth/nextjs/server"' has no exported member 'fetchQuery'.ts(2305)

#

@native maple I got that error Module '"@convex-dev/auth/nextjs/server"' has no exported member 'fetchQuery'.ts(2305)

native mapleBOT Jan 28, 2025, 6:21 AM

#

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

#

I apologize for the confusion in my previous answer. You're correct that there's an error with the import statement I provided. Let me provide you with the correct information based on the knowledge sources.

The fetchQuery function should be imported from convex/nextjs, not from @convex-dev/auth/nextjs/server. Here's the correct way to import and use fetchQuery in your Next.js middleware:

import { fetchQuery } from "convex/nextjs";
import { api } from "@/convex/_generated/api";
import { convexAuthNextjsToken } from "@convex-dev/auth/nextjs/server";

export default async function middleware(request: NextRequest) {
  const token = convexAuthNextjsToken();
  const userData = await fetchQuery(api.users.getCurrentUser, {}, { token });
  
  // Now you can check roles and permissions
  // ...
}

This correction is based on the information from the Next.js Server Rendering documentation, which shows the correct import for fetchQuery.

Additionally, make sure you have the latest versions of the Convex packages installed, as some users have reported issues with older versions. If you continue to experience problems, you might want to check your package versions and update them if necessary.

I apologize again for the confusion in my previous response. Thank you for bringing this to my attention, as it helps improve the accuracy of the information provided.

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

#

@summer trellis Kapa.ai is still learning and improving, please let me know how I did by reacting below.

summer trellis Jan 28, 2025, 6:26 AM

#

@native maple provide me teh getCurrentUser fn

native mapleBOT Jan 28, 2025, 6:26 AM

#

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

#

Certainly! I'll provide you with an example of the getCurrentUser function based on the information from our knowledge sources. This function is typically defined in your Convex backend, often in a file like convex/users.ts. Here's an example of how you can implement it:

import { query } from "./_generated/server";
import { getAuthUserId } from "@convex-dev/auth/server";

export const getCurrentUser = query({
  args: {},
  handler: async (ctx) => {
    const userId = await getAuthUserId(ctx);
    if (userId === null) {
      return null;
    }
    return await ctx.db.get(userId);
  },
});

This implementation is based on the example provided in the Convex Auth documentation.

Here's what this function does:

It uses the query function from Convex to define a new query.
It doesn't take any arguments (args: {}).
In the handler, it first calls getAuthUserId(ctx) to get the ID of the currently authenticated user.
If there's no authenticated user (i.e., userId is null), it returns null.
If there is an authenticated user, it fetches the user document from the database using ctx.db.get(userId) and returns it.

Remember to adjust this function according to your specific needs. For example, you might want to include additional user information or perform extra checks.

Also, make sure you have set up your Convex authentication properly for this function to work correctly. If you need more detailed information about setting up authentication or customizing this function, please let me know.

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

#

@summer trellis Kapa.ai is still learning and improving, please let me know how I did by reacting below.

summer trellis Jan 28, 2025, 7:56 AM

#

@native maple I got that error on singUp GET /fr/auth/sign-in 200 in 52ms
Hit error while running auth:signIn:
Error: [Request ID: bc2b2282f2af185b] Server Error
Uncaught TypeError: Cannot read properties of null (reading '_id')
at authorize [as authorize] (../../node_modules/@convex-dev/auth/src/providers/Password.ts:120:15)
at async handleCredentials (../../node_modules/@convex-dev/auth/src/server/implementation/signIn.ts:189:17)
at async handler (../../node_modules/@convex-dev/auth/src/server/implementation/index.ts:405:10)
{

}
that my auth.js import { convexAuth } from "@convex-dev/auth/server";
import { Password } from "@convex-dev/auth/providers/Password";
import { ResendVerify } from "./ResendVerify";
import { ResendOTPPasswordReset } from "./ResendOTPPasswordReset";

export const { auth, signIn, signOut, store, isAuthenticated } = convexAuth({
providers: [
Password({
verify: ResendVerify,
reset: ResendOTPPasswordReset,
}),
],
});

native mapleBOT Jan 28, 2025, 7:56 AM

#

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

#

Based on the error message and the code you've provided, it seems you're encountering an issue with the Convex Auth setup, specifically during the sign-up process. The error suggests that there's a problem with accessing the _id property of a null object in the Password provider's authorize function.

Let's break down the problem and suggest some solutions:

The error occurs in the Password provider's authorize function, which is part of the @convex-dev/auth package.
It's trying to access the _id property of an object that is null, which suggests that the user account might not be created properly during the sign-up process.

Here are some steps you can take to troubleshoot and potentially resolve this issue:

Make sure you've set up the necessary authentication tables in your Convex schema. According to the Convex Auth setup documentation, you need to add the authTables to your schema:

import { defineSchema } from "convex/server";
import { authTables } from "@convex-dev/auth/server";

const schema = defineSchema({
  ...authTables,
  // Your other tables...
});

export default schema;

Check if you've implemented the createOrUpdateUser callback in your convexAuth configuration. This callback is responsible for creating or updating the user record in your database. Here's an example of how it should look:

#

export const { auth, signIn, signOut, store, isAuthenticated } = convexAuth({
  providers: [
    Password({
      verify: ResendVerify,
      reset: ResendOTPPasswordReset,
    }),
  ],
  callbacks: {
    async createOrUpdateUser(ctx, args) {
      const userId = await ctx.db.insert("users", {
        email: args.profile.email,
        // Add any other fields you want to store
      });
      return userId;
    },
  },
});

Ensure that your ResendVerify and ResendOTPPasswordReset functions are correctly implemented and don't throw any errors.
Double-check that you're using the latest version of @convex-dev/auth. Some users have reported issues with older versions, as mentioned in the Discord support thread.
If the issue persists, you might want to add some logging in your createOrUpdateUser callback to see if it's being called and what data it's receiving.

If you've checked all these points and are still encountering the error, it might be helpful to create a minimal reproduction of the issue and share it with the Convex support team for further assistance.

Remember to always handle errors gracefully on the client side to provide a better user experience, even when unexpected server errors occur.

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

#

@summer trellis Kapa.ai is still learning and improving, please let me know how I did by reacting below.

summer trellis Jan 28, 2025, 8:00 AM

#

export const { auth, signIn, signOut, store, isAuthenticated } = convexAuth({
providers: [
Password({
verify: ResendVerify,
reset: ResendOTPPasswordReset,
}),
],
callbacks: {
async createOrUpdateUser(ctx, args) {
// Check if user exists
const existingUser = await ctx.db.query("users").withIndex("email", (q) => q.eq("email", args.profile.email)).first();
if (existingUser) {
return existingUser._id;
}

  // Create new user with roles and permissions
  const userId = await ctx.db.insert("users", {
    email: args.profile.email,
    emailVerificationTime: Date.now(),
    roles: [roles[1]],
    permissions: {
      view_dashboard: true,
      upload_files: true,
    },
  });

  return userId;
},

},
});
Argument of type 'string' is not assignable to parameter of type 'never'.ts(2345)

#

@native maple Argument of type 'string' is not assignable to parameter of type 'never'.ts(2345)export const { auth, signIn, signOut, store, isAuthenticated } = convexAuth({
providers: [
Password({
verify: ResendVerify,
reset: ResendOTPPasswordReset,
}),
],
callbacks: {
async createOrUpdateUser(ctx, args) {
// Check if user exists
const existingUser = await ctx.db.query("users").withIndex("email", (q) => q.eq("email", args.profile.email)).first();
if (existingUser) {
return existingUser._id;
}

  // Create new user with roles and permissions
  const userId = await ctx.db.insert("users", {
    email: args.profile.email,
    emailVerificationTime: Date.now(),
    roles: [roles[1]],
    permissions: {
      view_dashboard: true,
      upload_files: true,
    },
  });

  return userId;
},

},
});

native mapleBOT Jan 28, 2025, 8:01 AM

#

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

#

It seems you're encountering a TypeScript error related to the createOrUpdateUser callback in your Convex Auth configuration. The error suggests that there's a type mismatch, specifically with the args.profile.email property. This issue is similar to one reported in a Discord support thread.

To resolve this issue, you need to add a type annotation to the ctx parameter in your createOrUpdateUser callback. Here's how you can modify your code:

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

export const { auth, signIn, signOut, store, isAuthenticated } = convexAuth({
  providers: [
    Password({
      verify: ResendVerify,
      reset: ResendOTPPasswordReset,
    }),
  ],
  callbacks: {
    async createOrUpdateUser(ctx: MutationCtx, args) {
      // Rest of your code remains the same
      // ...
    },
  },
});

This solution is based on the information provided in the Discord support thread, where a similar issue was addressed.

The reason for this error is that the ctx / db in these callbacks doesn't know about your schema by default. By adding the MutationCtx type annotation, you're providing the necessary type information to TypeScript.

Make sure to import MutationCtx from your generated server file (typically ./_generated/server).

If you're still encountering issues after making this change, please let me know, and we can explore other potential solutions.

Discord support thread

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

#

@summer trellis Kapa.ai is still learning and improving, please let me know how I did by reacting below.

summer trellis Jan 28, 2025, 8:12 AM

#

@native maple Hit error while running auth:signIn:
Error: [Request ID: 23e44eac1627e912] Server Error
Uncaught TypeError: Cannot read properties of null (reading '_id')
at authorize [as authorize] (../../node_modules/@convex-dev/auth/src/providers/Password.ts:120:15)
at async handleCredentials (../../node_modules/@convex-dev/auth/src/server/implementation/signIn.ts:189:17)
at async handler (../../node_modules/@convex-dev/auth/src/server/implementation/index.ts:405:10)
{

}

native mapleBOT Jan 28, 2025, 8:12 AM

#

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

#

Based on the error message you've provided, it appears you're encountering an issue with Convex Auth during the sign-in process. This error suggests that the authorize function in the Password provider is trying to access the _id property of an object that is null. This typically occurs when the user account is not properly created or retrieved during the authentication process.

To resolve this issue, you can try the following steps:

Ensure that you've properly set up the authentication tables in your schema. As mentioned in the Convex Auth setup documentation, you need to include the authTables in your schema:

import { defineSchema } from "convex/server";
import { authTables } from "@convex-dev/auth/server";

const schema = defineSchema({
  ...authTables,
  // Your other tables...
});

export default schema;

Check if you've implemented the createOrUpdateUser callback in your convexAuth configuration. This callback is crucial for creating or updating user records in your database. Here's an example of how it should look:

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

export const { auth, signIn, signOut, store, isAuthenticated } = convexAuth({
  providers: [
    Password({
      // Your password provider configuration
    }),
  ],
  callbacks: {
    async createOrUpdateUser(ctx: MutationCtx, args) {
      // Check if user exists
      const existingUser = await ctx.db.query("users").withIndex("email", (q) => q.eq("email", args.profile.email)).first();
      if (existingUser) {
        return existingUser._id;
      }

#

// Create new user
const userId = await ctx.db.insert("users", {
email: args.profile.email,
// Add any other fields you want to store
});
return userId;
},
},
});


3. Make sure you're using the latest version of `@convex-dev/auth`. Some users have reported issues with older versions, as mentioned in the [Discord support thread](<https://discord.com/channels/1019350475847499849/1319483875117760562>).

4. If the issue persists, you might want to add some logging in your `createOrUpdateUser` callback to see if it's being called and what data it's receiving.

If you've checked all these points and are still encountering the error, it would be helpful to review your entire auth setup, including your schema and any custom authentication logic you might have. If the problem continues, consider reaching out to the Convex support team with a minimal reproduction of the issue for further assistance.

Remember to handle authentication errors gracefully on the client side to provide a better user experience, even when unexpected server errors occur.

[Convex Auth setup documentation](<https://labs.convex.dev/auth/setup#add-authentication-tables-to-your-schema>)
[Discord support thread](<https://discord.com/channels/1019350475847499849/1319483875117760562>)
----------------------
Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:
----------------------

#

@summer trellis Kapa.ai is still learning and improving, please let me know how I did by reacting below.

summer trellis Feb 13, 2025, 12:08 PM

#

spreadsheet-viewer.tsx:513 Import error: Error: [CONVEX M(spreadsheets:importLargeSpreadsheet)] [Request ID: 06473ce5e2276eee] Server Error
Uncaught Error: Value is too large (1.19 MiB > maximum size 1 MiB)
at async handler (../convex/spreadsheets.ts:75:68)

#

@native maple spreadsheet-viewer.tsx:513 Import error: Error: [CONVEX M(spreadsheets:importLargeSpreadsheet)] [Request ID: 06473ce5e2276eee] Server Error
Uncaught Error: Value is too large (1.19 MiB > maximum size 1 MiB)
at async handler (../convex/spreadsheets.ts:75:68)

native mapleBOT Feb 13, 2025, 12:09 PM

#

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

#

This error message indicates that you're encountering a size limit issue when trying to import a large spreadsheet into Convex. Specifically, the error states that the value you're trying to import is 1.19 MiB, which exceeds Convex's maximum document size limit of 1 MiB.

According to the Convex documentation on limits, there is indeed a 1 MiB size limit per document:

"Size: 1 MiB (Applied per document and to any nested Object unless stated otherwise)"

To resolve this issue, you have a few options:

Split the large spreadsheet: If possible, break down your large spreadsheet into smaller chunks that are each under 1 MiB in size. You can then import these smaller chunks separately.
Store large data in Convex file storage: Instead of storing the entire spreadsheet content in a document, you can use Convex's file storage feature to store the large spreadsheet file, and then store metadata and a reference to the file in your document. This approach is mentioned in a Discord support thread as a solution for handling large payloads.
Process and reduce data size: If possible, process the spreadsheet data before importing it to Convex, extracting only the necessary information to reduce its size.
Use pagination or streaming: If you're reading the spreadsheet data from an external source, consider implementing pagination or streaming to process and store the data in smaller chunks.

Here's a basic example of how you might modify your import function to use file storage:

import { v } from "convex/values";
import { mutation } from "./_generated/server";

#

export const importLargeSpreadsheet = mutation({
args: { fileId: v.string() },
handler: async (ctx, args) => {
const file = await ctx.storage.getFile(args.fileId);
if (!file) {
throw new Error("File not found");
}

// Store metadata about the spreadsheet
const spreadsheetId = await ctx.db.insert("spreadsheets", {
  fileName: file.name,
  fileSize: file.size,
  fileId: args.fileId,
  // Add any other relevant metadata
});

return spreadsheetId;

},
});


In this approach, you would first upload the spreadsheet file to Convex storage, then call this mutation with the file ID to create a database entry with the file's metadata.

Remember to handle large file uploads appropriately on the client side as well, potentially using chunked uploads if the files are very large.

If you need more specific guidance on implementing these solutions, please provide more details about your current implementation and requirements.

[Convex documentation on limits](<https://docs.convex.dev/production/state/limits>)
[Discord support thread on large payloads](<https://discord.com/channels/1019350475847499849/1328094559556599889>)
----------------------
Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:
----------------------

#Nextjs Role permission middleware

These documents provide more context on how to work with authentication in Convex and Next.js.

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

I apologize again for the confusion in my previous response. Thank you for bringing this to my attention, as it helps improve the accuracy of the information provided.

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

Also, make sure you have set up your Convex authentication properly for this function to work correctly. If you need more detailed information about setting up authentication or customizing this function, please let me know.

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

Remember to always handle errors gracefully on the client side to provide a better user experience, even when unexpected server errors occur.

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

Discord support thread

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