Express Router

const express = require("express");
const router = express.Router();

// /api/users/
router.get("/", (req, res) => {
  res.json([{ id: 1, name: "রহিম" }]);
});

// /api/users/:id
router.get("/:id", (req, res) => {
  res.json({ id: req.params.id });
});

// /api/users/
router.post("/", (req, res) => {
  res.status(201).json(req.body);
});

router.put("/:id", (req, res) => {
  res.json({ id: req.params.id, ...req.body });
});

router.delete("/:id", (req, res) => {
  res.json({ message: "deleted" });
});

module.exports = router;

const { Router } = require("express");
const router = Router();

router.get("/", (req, res) => res.json({ posts: [] }));
router.get("/:id", (req, res) => res.json({ postId: req.params.id }));

module.exports = router;

const express = require("express");
const app = express();

const userRoutes = require("./routes/users");
const postRoutes = require("./routes/posts");

// মাউন্ট করা
app.use("/api/users", userRoutes);
app.use("/api/posts", postRoutes);

app.listen(3000);

const router = express.Router();

// এই router-এর শুধু সব route-এ apply হবে
router.use((req, res, next) => {
  console.log("User routes hit:", req.originalUrl);
  next();
});

// mergParams — parent & child params
const child = express.Router({ mergeParams: true });
child.get("/", (req, res) => {
  res.json({ parentId: req.params.parentId });
});

app.use("/api/parents/:parentId/children", child);