Controller

ELI5 — The Vibe Check

A controller is the manager who actually handles your request after it passes through security. It figures out what data you need, asks the model to fetch it, and sends back the response. It's the brain that coordinates everything.

Real Talk

A controller is a function or class that handles the business logic for a specific route or group of routes. It processes the incoming request, interacts with models or services to get/manipulate data, and returns the appropriate response.

Show Me The Code

const getUserById = async (req, res) => {
  const user = await User.findById(req.params.id);
  if (!user) return res.status(404).json({ error: 'Not found' });
  res.json(user);
};

When You'll Hear This

"Put the business logic in the controller." / "The UserController handles all user-related requests."