Hono•7mo ago

Custom jwt middleware

I want to check whether the user exists in the database based on the ID that I took from the sub payload using JWT middleware. Anyone can help me for the example code?

5 Replies

Nico•7mo ago

It really depends on the database you are using. Here is an example of an JWT Auth middleware https://github.com/NicoPlyley/hono-auth/blob/main/src/middleware/protect.ts

GitHub

hono-auth/src/middleware/protect.ts at main · NicoPlyley/hono-auth

An example app with authentication using Hono, Drizzle, and D1. Running on CF Workers - NicoPlyley/hono-auth

rahmatOP•7mo ago

thanks bro, but I mean can we create a middleware that extends with the built-in jwt middleware? So we can use c.get('jwtPayload') to get sub payload instead of write the code from line 11 to 26

Nico•7mo ago

As far as extending it directly I don't think so. But you can write another middleware to just do the database check

import { Hono } from 'hono'
import {createMiddleware} from "hono/factory";

const app = new Hono()

const mw1 = createMiddleware(async(_, next) => {
  console.log('MW1 Running');
  await next();
})

const mw2 = createMiddleware(async(_, next) => {
  console.log('MW2 Running');
  await next();
})

const myCustomMiddleware = [mw1, mw2]

app.get('/', ...myCustomMiddleware, (c) => {
  return c.text('Hello Hono!')
});

export default app

import { Hono } from 'hono'
import {createMiddleware} from "hono/factory";

const app = new Hono()

const mw1 = createMiddleware(async(_, next) => {
  console.log('MW1 Running');
  await next();
})

const mw2 = createMiddleware(async(_, next) => {
  console.log('MW2 Running');
  await next();
})

const myCustomMiddleware = [mw1, mw2]

app.get('/', ...myCustomMiddleware, (c) => {
  return c.text('Hello Hono!')
});

export default app

You can do something like this to make it into one middleware as well. That way you don't have to define two each time

rahmatOP•7mo ago

Why didn't I think of combining them into an array? 😁😅 thanks bro

Nico•7mo ago

No problem!

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Custom jwt middleware