#Mongodb & betterauth 0.7 to convex & betterauth 0.8,

76 messages · Page 1 of 1 (latest)

solar walrusBOT Sep 22, 2025, 11:19 PM

Hi @maiden peak. 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, a local install of Better Auth with Convex is recommended if you need full control over your Better Auth schema, want to use schema-related configuration, or need to use plugins beyond those officially supported for Convex + Better Auth. The local install approach is specifically mentioned as necessary for plugins that require schema changes and aren't in the list of supported plugins for the default integration.

From the supported plugins list, Magic Link and generic OAuth (which would cover Discord) are supported out of the box with Convex + Better Auth, so you do not need a local install for those alone. However, the admin and organization plugins are not listed among the officially supported plugins for the default integration. For these plugins, you would need to use the local install method, as it allows you to customize the schema and support additional plugins not included in the default set. The local install process involves generating and managing your own schema, which is necessary for plugins that require schema changes beyond the default setupSupported Plugins, Local Install.

In summary:

If you need the admin and organization plugins, local install is recommended and likely required for your use case.
If you only need magic links and Discord OAuth, the default integration would suffice.

For your migration from MongoDB & Better Auth 0.7 to Convex & Better Auth 0.8, follow the migration guide first, then proceed with the local install steps to ensure your required plugins are supported and your schema is properly configuredLocal Install, Migrate to 0.8.

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solar walrusBOT Sep 24, 2025, 1:25 PM

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

I'm sorry, but the knowledge sources do not provide a complete, explicit example of a convex/auth.ts file for a Convex local install that creates an organization as part of the sign-up flow.

However, I can summarize the relevant steps and partial code based on the migration and local install guides:

With a local install, you define your own schema and can use triggers to run logic (such as creating an organization) when a user is created.
The migration guide shows how to use the onCreate trigger to run custom logic after user creation, but it does not provide a full example of creating an organization in that trigger.
The organization plugin is mentioned as requiring a local install, but there is no detailed code for integrating it into the sign-up flow.

Here is a partial example, based on the migration and local install documentation, showing where you would add organization creation logic in the onCreate trigger:

import { createClient } from "@convex-dev/better-auth";
import { DataModel } from "./_generated/dataModel";
import { components } from "./_generated/api";
import { betterAuth } from "better-auth";

const authComponent = createClient<DataModel>(components.betterAuth);

export const createAuth = (ctx, { optionsOnly } = { optionsOnly: false }) => {
  return betterAuth({
    // ... your Better Auth config ...
    database: authComponent.adapter(ctx),
    logger: { disabled: optionsOnly },
    // plugins, etc.
  });
};

// Triggers for user creation
export const { onCreate } = authComponent.triggersApi({
user: {
onCreate: async (ctx, authUser) => {
// Custom logic to create an organization for the new user
// Example (pseudo-code, as actual organization creation API is not documented):
// const orgId = await ctx.db.insert("organization", { ownerId: authUser._id, ... });
// Optionally link user to organization, set roles, etc.
},
},
});


**Note:**  
- The actual API for creating an organization (table name, fields, etc.) is not documented in the provided sources, so you will need to refer to your generated schema or the organization plugin documentation for the exact implementation.
- If you need more details on the organization plugin or its schema, you may need to consult the official Better Auth or Convex documentation outside of the provided sources.

If you need a more detailed or working example, please provide additional documentation or clarify your schema and plugin setup.

References:  
- [Local Install](<https://convex-better-auth.netlify.app/local-install>)
- [Migrate to 0.8](<https://convex-better-auth.netlify.app/migrate-to-0-8>)
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solar walrusBOT Sep 25, 2025, 12:58 AM

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

To create an organization and a member on signup using Convex + Better Auth with a local install, you should use the triggers feature provided by Better Auth. Triggers allow you to run custom logic (such as creating an organization and linking the new user as a member) in the same transaction as the user creation.

Here’s how you can configure this:

Enable triggers in your local install:
In your convex/auth.ts, pass a triggers object to your createClient call. For the user table, implement the onCreate trigger.
Inside the onCreate trigger:
Insert a new organization and a member record referencing the new user. The exact table and field names depend on your generated schema, but the pattern is as follows:

import { createClient } from "@convex-dev/better-auth";
import { components } from "./_generated/api";
import { DataModel } from "./_generated/dataModel";

export const authComponent = createClient<DataModel>(components.betterAuth, {
  triggers: {
    user: {
      onCreate: async (ctx, authUser) => {
        // Create an organization
        const orgId = await ctx.db.insert("organization", {
          name: `${authUser.email}'s Organization`,
          ownerId: authUser._id,
          // ...other fields as needed
        });

        // Add the user as a member of the organization
        await ctx.db.insert("member", {
          organizationId: orgId,
          userId: authUser._id,
          role: "owner", // or whatever role makes sense
          // ...other fields as needed
        });
      },
    },
  },
});

Important notes:

The actual table and field names (organization, member, organizationId, userId, etc.) may differ based on your generated schema. Check your local install’s schema for the correct names.
Throwing an error in the trigger will prevent the user creation if something goes wrong, ensuring transactional integrity.

This approach is the recommended and supported way to run custom logic (like organization/member creation) on signup with a local install of Better Auth and ConvexTriggers, Local Install.

If you need to customize the organization/member fields or logic, simply adjust the trigger code accordingly.

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

The knowledge sources do not provide explicit documentation or examples for setting the organizationId inside the session object as part of the signup flow with Convex + Better Auth (local install).

Triggers in Better Auth allow you to run logic (such as creating organizations and members) transactionally when a user is created, but there is no mention in the sources of a built-in way to attach additional custom fields (like organizationId) to the session document or JWT during this process. In fact, a feature request for custom claims in the JWT (such as organizationId or permissions) is noted as not currently supported in Convex AuthDiscord: Custom claims in JWT.

If you need to associate a session with an organization, you would typically store the mapping in your database and look it up as needed, rather than embedding it directly in the session or JWT.

If you have a specific use case that requires this, you may need to implement additional logic in your application, but the knowledge sources do not describe a supported or recommended way to do this directly within the Convex + Better Auth local install flow.

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

Certainly! Here’s how to set up Magic Link authentication with Convex Auth using a local install, based on the knowledge sources:

1. Install Convex Auth (local install) and dependencies

Follow the local install guide to set up Better Auth as a local component in your Convex project.

2. Configure your email provider

Choose an email provider (e.g., Resend) and set the required environment variable. For Resend:

npx convex env set AUTH_RESEND_KEY yourresendkey

Make sure your SITE_URL is set as well:

npx convex env set SITE_URL <http://localhost:5173>

3. Add the Magic Link provider to your auth config

In your convex/auth.ts, import the provider and add it to your providers array. For Resend:

import Resend from "@auth/core/providers/resend";
import { convexAuth } from "@convex-dev/auth/server";

export const { auth, signIn, signOut, store, isAuthenticated } = convexAuth({
  providers: [Resend],
});

Magic Links Setup

4. Add a sign-in form in your frontend

Example React component:

import { useAuthActions } from "@convex-dev/auth/react";

export function SignIn() {
  const { signIn } = useAuthActions();
  return (
    <form
      onSubmit={(event) => {
        event.preventDefault();
        const formData = new FormData(event.currentTarget);
        void signIn("resend", formData);
      }}
    >
      <input name="email" placeholder="Email" type="text" />
      <button type="submit">Send sign-in link</button>
    </form>
  );
}

Magic Links Setup

Notes:

The provider ID for signIn is usually the lowercase name of the provider (e.g., "resend").
You can customize the email template and other provider options as needed.
For more advanced flows (e.g., OTPs), see the OTPs guide.

This setup will enable Magic Link authentication in your Convex project using a local install.

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

To set up Magic Links with Better Auth on a local install in Convex, you need to follow the local install process and configure an email provider for sending the magic links. Here’s how you do it, based on the knowledge sources:

1. Local Install Setup

First, follow the local install guide to set up Better Auth as a local component in your Convex project. This involves:

Creating a local component directory (e.g., convex/betterAuth/)
Generating the schema with the Better Auth CLI
Registering the local component in your convex.config.ts
Updating your auth.ts to use the local schema

2. Configure Magic Link Provider

Magic Link authentication is configured by adding an email provider (like Resend) to your providers array. You do this in your convex/auth.ts file. For example:

import Resend from "@auth/core/providers/resend";
import { convexAuth } from "@convex-dev/auth/server";

export const { auth, signIn, signOut, store, isAuthenticated } = convexAuth({
  providers: [Resend],
});

You must also set the appropriate environment variables for your email provider (e.g., AUTH_RESEND_KEY) and ensure SITE_URL is set for redirects.
Magic Links Setup

3. Is Magic Link a Server Action?

Yes, the magic link flow is handled as a server action on Convex.
When a user submits their email, the frontend calls the signIn function (from @convex-dev/auth/react), which triggers the server-side logic to generate and send the magic link email. The actual sending and verification of the magic link is managed by the Convex backend, not the client.

Example frontend usage:

import { useAuthActions } from "@convex-dev/auth/react";

export function SignIn() {
const { signIn } = useAuthActions();
return (
<form
onSubmit={(event) => {
event.preventDefault();
const formData = new FormData(event.currentTarget);
void signIn("resend", formData);
}}
>
<input name="email" placeholder="Email" type="text" />
<button type="submit">Send sign-in link</button>
</form>
);
}

[Magic Links Setup](<https://labs.convex.dev/auth/config/email>)

---

**Summary:**  
- Magic Link setup with Better Auth on Convex (local install) is configured server-side.
- The frontend triggers the flow, but the actual magic link generation and email sending is a server action handled by Convex.
- You must configure an email provider and set the required environment variables.

If you need more details on the local install process, see the [local install guide](<https://convex-better-auth.netlify.app/local-install>) and [magic link setup](<https://labs.convex.dev/auth/config/email>).
----------------------
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Let me check the knowledge base for you again. One moment! :books:

I'm sorry, but the knowledge sources do not contain any information or code examples for integrating a Stripe plugin with Better Auth in a local install on Convex. There are detailed guides for setting up Stripe payment flows with Convex and for setting up Better Auth (including local install), but there is no documentation or code for a Stripe plugin within Better Auth or for combining Stripe and Better Auth in a local install context.

If you need to integrate Stripe payments with Convex, you can follow the Stripe with Convex guide, which shows how to set up payment flows using Convex actions and HTTP endpoints. For Better Auth local install, you can follow the local install guide, but there is no mention of a Stripe plugin or direct integration between Stripe and Better Auth in the provided sources.

If you have more specific requirements or additional documentation, please provide them for a more targeted answer.

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solar walrusBOT Sep 25, 2025, 9:17 AM

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

For a local install of Better Auth in Convex, the users table (and other Better Auth tables) are created within the component namespace, not in your main project namespace. This means you should see the users table at a path like:

<https://dashboard.convex.dev/t/kal/x/x/data?table=user&component=x>

and not as a top-level table like:

<https://dashboard.convex.dev/t/kal/x/x/data?table=user>

This is because, with a local install, Better Auth manages its own schema and tables inside its component directory, and Convex namespaces these tables under the component to avoid conflicts and to encapsulate the component’s data. This is explicitly described in the local install documentation, which notes that the schema and tables are managed within the component and not at the top level of your project schemaLocal Install.

So, the correct location for the users table with a local install is under the component namespace.

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

To ensure that your organization is created in the component namespace (not the top-level table) after signup in a Convex local install with Better Auth, you need to use the component’s API and table names, not your app’s root tables.

When using a local install, your component tables (like organization) are namespaced under the component. To insert into the component’s organization table, you should use the table name as it appears in the component schema, and ensure your trigger or mutation is running in the context of the component.

Example: Creating an organization in the component namespace after signup

import { createClient } from "@convex-dev/better-auth";
import { components } from "./_generated/api";
import { DataModel } from "./_generated/dataModel";

// This creates a client for the component namespace
export const authComponent = createClient<DataModel>(components.betterAuth, {
  triggers: {
    user: {
      onCreate: async (ctx, authUser) => {
        // Insert into the component's organization table
        await ctx.db.insert("organization", {
          name: `${authUser.email}'s Organization`,
          ownerId: authUser._id,
          // ...other fields as needed
        });
      },
    },
  },
});

Key points:

Use ctx.db.insert("organization", ...) inside the component trigger, not in a top-level mutation.
The organization table referenced here is the one defined in your component’s schema, not a top-level table.
Make sure you are not importing or using the top-level Convex mutation or query helpers for this logic—use the component’s trigger system as shown above.

If you see your organizations being created in the top-level table, double-check:

You are using the component’s createClient and not the root Convex helpers.
The trigger is defined in the component config, not in your app’s root code.

This approach ensures all data is stored within the component namespace, as intended for local installs with Better AuthLocal Install, Triggers.

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solar walrusBOT Sep 25, 2025, 9:40 AM

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

The TypeScript errors you are seeing are due to type mismatches and missing type annotations in your convex/stripe/plugin.ts file. Here’s what’s happening, based on the error messages and the patterns seen in Convex and plugin development:

1. Property 'role' does not exist on type '{}'

typeof membership.role === "string"

and

membership.role.toLowerCase()

These errors mean that membership is being inferred as {} (an empty object), so TypeScript does not know it has a role property. This usually happens when:

The type of membership is not specified or inferred as any or {}.
You are not using the correct type from your generated data model or plugin types.

Solution:
Explicitly type membership using the correct type from your data model, for example:

import { Doc } from "../_generated/dataModel";
// ...
const membership: Doc<"membership"> = ...;

Or, if you expect membership to possibly be undefined, use:

if (membership && typeof membership.role === "string") { ... }

2. Handler signatures do not match expected plugin types

Errors like:

Type '({ subscription }: { subscription: any; }, ctx: any) => Promise<void>' is not assignable to type '(data: { event: Event; subscription: Subscription; }) => Promise<void>'.
Target signature provides too few arguments. Expected 2 or more, but got 1.

mean that your handler functions are using the wrong parameter structure. The plugin expects a single argument (an object with specific properties), but your function is using two arguments ({ subscription } and ctx).

Solution:
Update your handler signatures to match the expected type. For example:

onSubscriptionUpdate: async ({ event, subscription }) => {
  // use event and subscription here
}

Do not use a separate ctx parameter unless the plugin specifically provides it.

3. Implicit 'any' types

Errors like:

Binding element 'subscription' implicitly has an 'any' type.
Parameter 'ctx' implicitly has an 'any' type.

mean you need to add type annotations, or (preferably) use the types provided by your plugin or data model.

Summary

Use the correct types for your data (e.g., Doc<"membership">).
Match the handler signatures to what the plugin expects (usually a single object argument).
Do not add extra parameters like ctx unless explicitly required by the plugin API.

If you are using a plugin provided by Convex or a community package, refer to its documentation or type definitions for the correct handler signatures and data types. If you are unsure about the expected types, check your generated API and data model files for type definitions.

The knowledge sources do not provide a Stripe plugin code example for Convex, so if you need the exact handler signatures, you should consult the plugin’s documentation or type definitions directly.

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solar walrusBOT Sep 25, 2025, 10:09 AM

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

Your plan to ensure all Convex references to Better Auth membership/subscription tables flow through the component namespace is well-aligned with the best practices described in the knowledge sources for Convex + Better Auth local install.

Key Points from the Knowledge Sources

Component Namespace:
With a local install, Better Auth tables (like member, organization, subscription) are namespaced under the component, not at the top level. All access to these tables should use the component’s API and types to avoid type errors and ensure type safetyLocal Install.
Type Safety:
Importing the component’s DataModel and using the generated Doc types for the component is the correct way to get type-safe access to these tables. This avoids TypeScript errors about missing tables, since the main app’s data model does not include the component’s tables.
Adapter Functions:
The local install guide shows how to export adapter functions (like findMany, findOne, create, updateOne) from the component and use them in your app. This is the recommended way to interact with component tables from outside the component itselfLocal Install.
Context Typing:
Casting or aliasing the context (ctx) to the component’s mutation/query context is a valid approach to ensure type safety when accessing component tables in triggers or other logic.

Your Instructions

apps/web/convex/auth.ts:
Importing the component’s data model and context types, and casting ctx in triggers, is correct and will resolve type errors when accessing component tables.

apps/web/convex/org.ts & stripe.ts:
Using the exported adapter helpers (findMany, findOne, create, updateOne) and the component’s Doc type for all queries/mutations against Better Auth tables is the right approach. This ensures all access is properly namespaced and type-checked.
Removing direct ctx.db calls:
This is necessary, as direct ctx.db calls in the main app context will not see the component tables and will cause type errors.

Conclusion

Your plan is correct and matches the documented best practices for Convex + Better Auth local install. By routing all access to Better Auth tables through the component’s adapters and types, you ensure type safety and proper namespacing, as required by the local install architecture.

If you follow these steps, you should resolve the type errors and maintain a clean separation between your app’s tables and the Better Auth component tables, as intended by the Convex component systemLocal Install.

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solar walrusBOT Sep 25, 2025, 12:50 PM

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

Yes, your code for exporting the Better Auth adapter helpers using createApi in a local install is correct and matches the pattern shown in the official documentation:

import { createApi } from "@convex-dev/better-auth";
import schema from "./schema";
import { createAuth } from "../auth";

export const {
  create,
  findOne,
  findMany,
  updateOne,
  updateMany,
  deleteOne,
  deleteMany,
} = createApi(schema, createAuth);

This is the recommended way to export adapter functions for your component tables in a local install. These helpers (`create`, `findOne`, `findMany`, etc.) should then be used in your app to interact with the Better Auth tables, ensuring all access flows through the component namespace and is type-safeLocal Install.

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solar walrusBOT Sep 25, 2025, 2:27 PM

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

The error message you are seeing:

ArgumentValidationError: Object is missing the required field `value`. Consider wrapping the field validator in `v.optional(...)` if this is expected.
Path: .where[0]
Object: {field: "userId", operator: "eq"}
Validator: v.object({connector: v.optional(v.union(v.literal("AND"), v.literal("OR"))), field: v.string(), operator: v.optional(v.union(v.literal("lt"), v.literal("lte"), v.literal("gt"), v.literal("gte"), v.literal("eq"), v.literal("in"), v.literal("ne"), v.literal("contains"), v.literal("starts_with"), v.literal("ends_with"))), value: v.union(v.string(), v.float64(), v.boolean(), v.array(v.string()), v.array(v.float64()), v.null())})

means that when calling the Better Auth adapter's findOne or findMany (or similar) function, the where clause you provided is missing the required value field. The expected object for each filter in the where array must include field, operator, and value.

Example of a correct filter:

{
  field: "userId",
  operator: "eq",
  value: "someUserId"
}

Your erroring object:

{ field: "userId", operator: "eq" }

is missing the value property.

How to fix:
Update your call to the adapter so that each filter in the where array includes a value. For example:

ctx.runQuery(findOne, {
  model: "membership",
  where: [
    { field: "userId", operator: "eq", value: userId }
  ]
});

This matches the expected validator and will resolve the validation error.

If you expect the value to sometimes be missing, you can make the validator optional, but for most queries, you should provide all required fields as shown above.

The knowledge sources confirm that adapter functions require properly structured filter objects, and missing required fields will result in validation errorsLocal Install.

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solar walrusBOT Sep 25, 2025, 2:50 PM

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

Sorry @maiden peak, 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?

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

No, your usage is not correct according to the error and the requirements of the Better Auth adapter's where filter.

The where array for adapter functions like findOne or findMany must include a value field for each filter object. Your current filter:

{ field: "userId", operator: "eq" }

is missing the required value property, which causes the validation error:

Object is missing the required field value.
Path: .where[0]
Object: {field: "userId", operator: "eq"}

Correct usage:

{ field: "userId", operator: "eq", value: userId }

So, you must always provide the `value` property in each filter object when using the Better Auth adapter's query helpers. This is enforced by the argument validation in the adapter's API, as shown in the error message and confirmed by the schema validator in the knowledge sourcesLocal Install.

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

Certainly! Here’s how you should correctly use the Better Auth adapter’s findOne (or findMany) function in Convex local install, ensuring the where filter includes the required value field.

Correct usage example:

import { findOne } from "./betterAuth/adapter"; // Adjust path as needed

// Inside your Convex function:
export default async function getMembership(ctx, userId: string) {
  const membership = await ctx.runQuery(findOne, {
    model: "membership",
    where: [
      { field: "userId", operator: "eq", value: userId }
    ]
  });
  return membership;
}

Key points:

The where array must include objects with field, operator, and value.
This matches the expected validator and avoids the ArgumentValidationError you encountered.

This approach is directly supported and required by the Better Auth local install adapter API, as described in the documentationLocal Install.

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

Yes, your code in /Users/kal/GitHub/SellerSmart/apps/web/convex/betterAuth/adapter.ts is correct for exporting the Better Auth adapter helpers in a local install setup. This matches the official pattern described in the knowledge sources for Convex + Better Auth local install:

import { createApi } from "@convex-dev/better-auth";
import schema from "./schema";
import { createAuth } from "../auth";

export const {
  create,
  findOne,
  findMany,
  updateOne,
  updateMany,
  deleteOne,
  deleteMany,
} = createApi(schema, createAuth);

This setup allows you to use these adapter functions (`create`, `findOne`, `findMany`, etc.) elsewhere in your app to interact with the Better Auth component tables in a type-safe and namespaced way, as required for local installsLocal Install.

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solar walrusBOT Sep 25, 2025, 3:52 PM

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

Certainly! Based on your previous messages and the knowledge sources, here’s how you should structure your code to correctly use the Better Auth adapter helpers in a Convex local install, ensuring all references to membership/subscription tables flow through the component namespace and that your where filters are valid.

1. Export Adapter Helpers in `convex/betterAuth/adapter.ts`

Your code here is already correct:

import { createApi } from "@convex-dev/better-auth";
import schema from "./schema";
import { createAuth } from "../auth";

export const {
  create,
  findOne,
  findMany,
  updateOne,
  updateMany,
  deleteOne,
  deleteMany,
} = createApi(schema, createAuth);

This makes the adapter helpers available for use elsewhere in your app, and ensures all access to Better Auth tables is namespaced and type-safeLocal Install.

2. Correct Usage of Adapter Helpers in Your Convex Functions

When you want to query the membership table, always include the value field in your where filter:

import { findOne } from "./betterAuth/adapter"; // Adjust path as needed

export default async function getMembership(ctx, userId: string) {
  const membership = await ctx.runQuery(findOne, {
    model: "membership",
    where: [
      { field: "userId", operator: "eq", value: userId }
    ]
  });
  return membership;
}

Do not omit the value property in your filter objects.
This pattern applies to all adapter helpers (findOne, findMany, etc.) and all component tables.

3. Type Safety in Triggers (Optional, for Triggers/Handlers)

If you are using triggers (e.g., in auth.ts), and want type safety for component tables, you can import the component’s data model and context types:

import type { DataModel as BetterAuthDataModel, Doc } from "./betterAuth/schema";
import type { GenericMutationCtx } from "convex/server";

type BetterAuthMutationCtx = GenericMutationCtx<BetterAuthDataModel>;

// In your trigger:
user: {
  onCreate: async (ctx, authUser) => {
    const betterAuthCtx = ctx as BetterAuthMutationCtx;
    await betterAuthCtx.db.insert("organization", {
      name: `${authUser.email}'s Organization`,
      ownerId: authUser._id,
    });
  }
}

This ensures the compiler knows about the component tables and their types.

Summary:

Always use the adapter helpers for component tables.
Always include value in your where filters.
For type safety, use the component’s data model and context types when accessing component tables in triggers or handlers.

This approach will resolve the validation and type errors you encountered and is fully supported by the knowledge sources for Convex + Better Auth local installLocal Install.

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

solar walrusBOT Sep 26, 2025, 11:04 AM

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

Sorry @maiden peak, 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?

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

To automatically assign an activeOrganizationId to each Better Auth session in Convex, you need to ensure that this field is set when a session is created (i.e., on user login). Here’s how you can approach this, based strictly on the knowledge sources:

1. Schema Update

First, ensure your Better Auth session table (managed by the component) includes an optional activeOrganizationId field. With a local install, you control the schema, so you can add this field to the session table definition in your component schema file.

The local install guide shows how to define and generate your schema, and you can add custom fields as needed to your tables
Local Install.

2. Assigning `activeOrganizationId` on Session Creation

Better Auth local install supports triggers that run on table events, including session creation. You can use the session.onCreate trigger to set the activeOrganizationId when a new session is created.

Example plan:

In your convex/auth.ts (or wherever you configure your Better Auth component), add a trigger for the session table’s onCreate event.
In the trigger, look up the user’s default organization (e.g., by querying the member or organization table for the user).
Patch the new session document to set activeOrganizationId.

Example code outline:

import { createClient } from "@convex-dev/better-auth";
import { components } from "./_generated/api";
import { DataModel } from "./_generated/dataModel";

export const authComponent = createClient<DataModel>(components.betterAuth, {
triggers: {
session: {
onCreate: async (ctx, session) => {
// Find the user's default organization (pseudo-code)
const membership = await ctx.db
.query("member")
.withIndex("userId", (q) => q.eq("userId", session.userId))
.first();
if (membership) {
await ctx.db.patch(session._id, {
activeOrganizationId: membership.organizationId,
});
}
},
},
},
});


- The actual table and field names (`member`, `organizationId`, etc.) should match your generated schema.
- This logic ensures every new session gets an `activeOrganizationId` set to the user's default organization.

---

### 3. **Helper Functions (Optional)**

If you have complex logic for determining the default organization, you can abstract it into a helper function and call it from the trigger.

---

### 4. **Summary**

- **Update your session schema** to include `activeOrganizationId`.
- **Add a `session.onCreate` trigger** in your Better Auth component config to set this field.
- **Query the user's default organization** in the trigger and patch the session document accordingly.

---

**Limitations:**  
The knowledge sources do not provide a built-in Better Auth callback specifically for session creation, but they do document the use of triggers for running logic on table events, which is the supported approach for this use case[Triggers](<https://convex-better-auth.netlify.app/triggers>).

If you need to update the session on login or other events, you can use similar trigger logic for `onUpdate` as well.
----------------------
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----------------------

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

solar walrusBOT Sep 26, 2025, 11:20 AM

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

To automatically assign an activeOrganizationId to each Better Auth session and user on creation in a Convex local install, you should use triggers provided by Better Auth. Triggers allow you to run logic transactionally when documents are created or updated in your component tables. Here’s how you can implement this, based on the knowledge sources:

1. Update Your Schema

Ensure your user and session tables in the Better Auth component schema include an optional activeOrganizationId field.
This is supported in local install, where you control the schema and can add custom fields as neededLocal Install.

2. Add Triggers for User and Session Creation

In your convex/auth.ts (or wherever you configure your Better Auth component), add triggers for both the user and session tables:

import { createClient } from "@convex-dev/better-auth";
import { components } from "./_generated/api";
import { DataModel } from "./_generated/dataModel";

export const authComponent = createClient<DataModel>(components.betterAuth, {
triggers: {
user: {
onCreate: async (ctx, authUser) => {
// Create an organization for the new user
const orgId = await ctx.db.insert("organization", {
name: ${authUser.email}'s Organization,
ownerId: authUser._id,
});
// Set the user's activeOrganizationId
await ctx.db.patch(authUser._id, {
activeOrganizationId: orgId,
});
},
},
session: {
onCreate: async (ctx, session) => {
// Find the user's active organization
const user = await ctx.db.get(session.userId);
if (user && user.activeOrganizationId) {
await ctx.db.patch(session._id, {
activeOrganizationId: user.activeOrganizationId,
});
}
},
},
},
});


- The `user.onCreate` trigger creates an organization and sets the user's `activeOrganizationId`.
- The `session.onCreate` trigger copies the user's `activeOrganizationId` to the session when it is created.

---

### 3. Notes

- The actual table and field names (`organization`, `activeOrganizationId`, etc.) should match your generated schema.
- This approach uses only documented features: schema customization and triggers for transactional logic[Triggers](<https://convex-better-auth.netlify.app/triggers>).

---

**Summary:**  
- Add `activeOrganizationId` to your user and session tables in the component schema.
- Use Better Auth triggers to set this field on user and session creation.
- This ensures every new user and session is automatically assigned an organization, as supported by Convex + Better Auth local install.
----------------------
Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:
----------------------

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

solar walrusBOT Sep 26, 2025, 1:11 PM

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

Based on the knowledge sources, your approach is mostly correct and aligns with the recommended use of triggers in a Better Auth local install for Convex. Here’s a review and clarification:

Using triggers:
The knowledge sources confirm that you can use triggers on the user and session tables to run logic when these documents are created. This is the supported way to run transactional logic in response to auth events in a local installTriggers.
Type casting context:
Casting ctx to GenericMutationCtx<BetterAuthDataModel> is a valid way to ensure type safety when accessing component tables, as the component’s data model is separate from your app’s root data model.
Logic for assigning activeOrganizationId:
Your logic to infer the organization from the user’s activeOrganizationId or a fallback membership lookup is reasonable. The knowledge sources do not provide a built-in helper for this, but your approach is consistent with the flexibility provided by local install and custom triggers.
Patching both user and session:
Patching the activeOrganizationId on both the user and session is supported, as you control the schema and can add custom fields as neededLocal Install.

One caveat:

The knowledge sources do not provide explicit details on the types BetterAuthId<"user"> or BetterAuthId<"session">, so ensure these are defined in your generated types or component schema. If not, use the standard Id<"user"> and Id<"session"> types as generated by Convex.

Summary:
Your code structure and use of triggers for assigning activeOrganizationId on session creation is supported by the knowledge sources and should work, provided your types match your schema and you handle the fallback logic for organization inference as needed. If you encounter type issues, double-check your generated types and schema alignment.

If you need to ensure the organization is created and membership assigned on user creation, make sure your `user.onCreate` trigger handles that logic as well, as shown in previous examples.

#Mongodb & betterauth 0.7 to convex & betterauth 0.8,

For your migration from MongoDB & Better Auth 0.7 to Convex & Better Auth 0.8, follow the migration guide first, then proceed with the local install steps to ensure your required plugins are supported and your schema is properly configuredLocal Install, Migrate to 0.8.

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If you need to customize the organization/member fields or logic, simply adjust the trigger code accordingly.

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

If you have a specific use case that requires this, you may need to implement additional logic in your application, but the knowledge sources do not describe a supported or recommended way to do this directly within the Convex + Better Auth local install flow.

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

1. Install Convex Auth (local install) and dependencies

2. Configure your email provider

3. Add the Magic Link provider to your auth config

4. Add a sign-in form in your frontend

This setup will enable Magic Link authentication in your Convex project using a local install.

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1. Local Install Setup

2. Configure Magic Link Provider

3. Is Magic Link a Server Action?

If you have more specific requirements or additional documentation, please provide them for a more targeted answer.

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So, the correct location for the users table with a local install is under the component namespace.

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

This approach ensures all data is stored within the component namespace, as intended for local installs with Better AuthLocal Install, Triggers.

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1. Property 'role' does not exist on type '{}'

2. Handler signatures do not match expected plugin types

3. Implicit 'any' types

Summary

The knowledge sources do not provide a Stripe plugin code example for Convex, so if you need the exact handler signatures, you should consult the plugin’s documentation or type definitions directly.

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Key Points from the Knowledge Sources

Your Instructions

Conclusion

If you follow these steps, you should resolve the type errors and maintain a clean separation between your app’s tables and the Better Auth component tables, as intended by the Convex component systemLocal Install.

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

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The knowledge sources confirm that adapter functions require properly structured filter objects, and missing required fields will result in validation errorsLocal Install.

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

So, you must always provide the value property in each filter object when using the Better Auth adapter's query helpers. This is enforced by the argument validation in the adapter's API, as shown in the error message and confirmed by the schema validator in the knowledge sourcesLocal Install.

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

This approach is directly supported and required by the Better Auth local install adapter API, as described in the documentationLocal Install.

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

This setup allows you to use these adapter functions (create, findOne, findMany, etc.) elsewhere in your app to interact with the Better Auth component tables in a type-safe and namespaced way, as required for local installsLocal Install.

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

1. Export Adapter Helpers in convex/betterAuth/adapter.ts

2. Correct Usage of Adapter Helpers in Your Convex Functions

3. Type Safety in Triggers (Optional, for Triggers/Handlers)

This approach will resolve the validation and type errors you encountered and is fully supported by the knowledge sources for Convex + Better Auth local installLocal Install.

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

1. Schema Update

2. Assigning activeOrganizationId on Session Creation

1. Update Your Schema

2. Add Triggers for User and Session Creation

If you need to ensure the organization is created and membership assigned on user creation, make sure your user.onCreate trigger handles that logic as well, as shown in previous examples.

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

So, you must always provide the `value` property in each filter object when using the Better Auth adapter's query helpers. This is enforced by the argument validation in the adapter's API, as shown in the error message and confirmed by the schema validator in the knowledge sourcesLocal Install.

This setup allows you to use these adapter functions (`create`, `findOne`, `findMany`, etc.) elsewhere in your app to interact with the Better Auth component tables in a type-safe and namespaced way, as required for local installsLocal Install.

1. Export Adapter Helpers in `convex/betterAuth/adapter.ts`

2. Assigning `activeOrganizationId` on Session Creation

If you need to ensure the organization is created and membership assigned on user creation, make sure your `user.onCreate` trigger handles that logic as well, as shown in previous examples.