I Really like Middleware in NodeJs/Express.

#middleware #node #express

Middleware to attach a user to the request object because nodejs/express does not do that for you out of the box.

Say i have a controller that need to check whether a user is of certain role in order to let them access a certain resource. Then this middleware will be helpful as it makes a user available to this function. Then i can do something like user.role === <some_role> ? do_something: do_this

Here is how i might implement it.

/**
 * @param {Request} req
 * @param {Response} res
 */
const userIsAuthenticatedMiddleware = async (req, res, next) => {
  const token = req.headers["authorization"]?.split(" ")[1];
  if (!token) return res.status(401).json({ message: "Access denied" });

  try {
    jwt.verify(token, process.env.JWT_SECRET, (error, user) => {
      if (error) return res.status(401).json({ message: "Wrong token" });
      req.user = user;
      next();
    });
  } catch (error) {
    return res.status(500).json({ message: "Internal Server Error" });
  }
};

Top comments (16)

Joni Singh • Feb 21

Middleware in Node.js/Express enhances request handling, just like a reliable Umrah taxi service ensures a smooth and stress-free journey for pilgrims. Just as middleware optimizes web performance, taxi services provide comfort, safety, and efficiency, making Umrah travel seamless and hassle-free.

Joni Singh • Jan 31

Middleware in Node.js/Express plays a crucial role in handling requests efficiently, just like a Jeddah to Makkah taxi ensures a smooth and seamless journey for travelers. Just as middleware processes and modifies requests before reaching the final destination, taxi services optimize the travel experience by offering comfort, safety, and reliability. Whether you're customizing your ride preferences or ensuring a hassle-free transfer, both middleware in web development and taxi services share the goal of enhancing efficiency and delivering a seamless experience.

Joni Singh • Feb 21

Middleware in Node.js/Express enhances request handling, just like a reliable Jeddah Airport to Makkah taxi ensures a smooth and stress-free journey for pilgrims. Just as middleware streamlines web processes for efficiency, taxi services provide comfort, safety, and reliability, making travel from Jeddah Airport to Makkah seamless and hassle-free.

Easy Taxi KSA • May 27

Very informative content! Transport is key during Umrah. I found easytaxiksa.com/ to be an excellent choice for taxi services across Makkah and Madinah.

Joni Singh • Jan 11 • Edited

Enhanced User Management: Middleware allows the backend to authenticate users and control access to premium or admin-level features in apps like Instander APK.
Premium Features: Ensure that only users with the "premium" role can access advanced features such as high-quality media downloads.
Security: Middleware acts as a checkpoint to verify the legitimacy of users and their roles before processing sensitive requests.
This approach provides a scalable way to handle user roles and permissions for an app like Instander APK ensuring a secure and user-friendly experience.

#Qafila Tours • Mar 20

Middleware is the real MVP in Express—like the middleware of travel is having a good ride! If anyone’s heading to Saudi Arabia, I highly recommend Qafila Tours for smooth travel. Their Jeddah to Makkah taxi service is as reliable as your favorite middleware stack.

#Qafila Tours • Mar 20

Same here! Middleware makes Express apps so clean and modular—great for logging, auth, and more. Speaking of smooth experiences, if anyone needs hassle-free travel in Saudi Arabia, check out this reliable Jeddah to Makkah taxi service by Qafila Tours. Travel with ease, just like coding with middleware!