Theo's Typesafe Cult•2y ago

Best practice for Admin dashboard?

I want to make an admin special page, but on the client side, I didn't know how to check if the user is admin, how can I do it? Should I check if the id from ctx is admin with getServerSideProps or should I check with trpc query? I want to do something like layout

25 Replies

robotkutya•2y ago

In the create-t3-app starting template there is this part:

getSecretMessage: protectedProcedure.query(() => {
    return "you can now see this secret message!";
  }),

getSecretMessage: protectedProcedure.query(() => {
    return "you can now see this secret message!";
  }),

I recommend you go over that and follow that to the front end. If you have more questions lemme know 🖖

ÇağlarOP•2y ago

@robotkutya thank you very much, I would like to ask about handling on the client side like do I need some kind of provider layout or idk And it would be amazing if you could give me an example template

barry•2y ago

You don't check on the client side.

ÇağlarOP•2y ago

then what should I do? do you have any sample?

c•2y ago

not sure that this is best practice, but it's a middleware implementation w/ jwt: https://discord.com/channels/966627436387266600/1067624837507457034/1068639470896824320

ÇağlarOP•2y ago

how did u assign role to token? where did you take it from? I couldn't add a role or isAdmin (boolean type) to session.user object in callbacks. isAdmin or role is constantly returning undefined. It exists in the schema and I define 'user' by default, but it returns undefined no matter what I do btw Im using credentials provider

barry•2y ago

did you make the user before adding role

ÇağlarOP•2y ago

Yes I did

barry•2y ago

there you have the reason its undefined lol

ÇağlarOP•2y ago

Nope, it shouldnt have be undefined. I set User as the default value.

barry•2y ago

if a user exists without a role column, and you add role to the table it goes undefined not default

ÇağlarOP•2y ago

No, I mean there is a role column and its default value is User.

barry•2y ago

and you said the user was there before you added the role column

ÇağlarOP•2y ago

I wasnt mean that I'm sorry if I expressed it wrong

c•2y ago

hard to help much without code to look at. i actually had trouble doing this just based off of docs but you can try doing what i did and just reading through all the nextauth/trpc example reps and searching through past issues for other code examples.

ÇağlarOP•2y ago

@kivish Hey again, I just found how to handle it

callbacks: {
    jwt: ({ token, user }) => {
      user && (token.user = user);
      return token;
    },
    redirect({ url, baseUrl }) {
      // Allows relative callback URLs
      if (url.startsWith("/")) return `${baseUrl}${url}`;
      // Allows callback URLs on the same origin
      else if (new URL(url).origin === baseUrl) return url;
      return baseUrl;
    },
    session: ({ session, token }) => {
      session.user = {
        id: token.user.id,
        isAdmin: token.user.isAdmin as boolean,
        role: token.user.role,
      };

      return session;
    },
  },

callbacks: {
    jwt: ({ token, user }) => {
      user && (token.user = user);
      return token;
    },
    redirect({ url, baseUrl }) {
      // Allows relative callback URLs
      if (url.startsWith("/")) return `${baseUrl}${url}`;
      // Allows callback URLs on the same origin
      else if (new URL(url).origin === baseUrl) return url;
      return baseUrl;
    },
    session: ({ session, token }) => {
      session.user = {
        id: token.user.id,
        isAdmin: token.user.isAdmin as boolean,
        role: token.user.role,
      };

      return session;
    },
  },

ÇağlarOP•2y ago

ÇağlarOP•2y ago

In jwt we get user and return it inside token and then session takes user from token.user This method allows us to put exactly what we want inside the JWT

Lopen•2y ago

Depending on your database structure Arr you using role based Or you have a different table for admin This is how i guard my page when i do role based adim

import { prisma } from '@/server/db/client';
import type { GetServerSideProps, GetServerSidePropsContext } from "next";
import { unstable_getServerSession } from "next-auth";
import { authOptions } from "./auth/[...nextauth]";

export const requireAdmin =
  (func: GetServerSideProps) => async (ctx: GetServerSidePropsContext) => {
    const session = await unstable_getServerSession(
      ctx.req,
      ctx.res,
      authOptions
    );

    if (!session) {
      return {
        redirect: {
          destination: "/login", // login path
          permanent: false,
        },
      };
    }
    const result = await prisma.user.findUnique({
      where: { id: session.user.userId},
      select: {role:true}
    });
    if (result?.role !== "ADMIN") {
      return {
        redirect: {
          destination: "/account", // login path
          permanent: false,
        },
      };
    }
    

    return await func(ctx);
  };

import { prisma } from '@/server/db/client';
import type { GetServerSideProps, GetServerSidePropsContext } from "next";
import { unstable_getServerSession } from "next-auth";
import { authOptions } from "./auth/[...nextauth]";

export const requireAdmin =
  (func: GetServerSideProps) => async (ctx: GetServerSidePropsContext) => {
    const session = await unstable_getServerSession(
      ctx.req,
      ctx.res,
      authOptions
    );

    if (!session) {
      return {
        redirect: {
          destination: "/login", // login path
          permanent: false,
        },
      };
    }
    const result = await prisma.user.findUnique({
      where: { id: session.user.userId},
      select: {role:true}
    });
    if (result?.role !== "ADMIN") {
      return {
        redirect: {
          destination: "/account", // login path
          permanent: false,
        },
      };
    }
    

    return await func(ctx);
  };

First i check if the user is signed in Second check if user has role admin Also i modified my session object and included role in my next auth types and session

ÇağlarOP•2y ago

I totally agree, our problem here was to extend the user in the session

Lopen•2y ago

So have you solved it?

ÇağlarOP•2y ago

yes, I did, thank you for different approach

Unknown User•2y ago

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Lopen•2y ago

import React from "react"

export const getServerSideProps = requireAdmin(async () => {
  return { props: {} };
});

function Home () {
return ( <div>hello</div>)
}
export default Home;

import React from "react"

export const getServerSideProps = requireAdmin(async () => {
  return { props: {} };
});

function Home () {
return ( <div>hello</div>)
}
export default Home;

Unknown User•2y ago

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Best practice for Admin dashboard?