Can not get req.params in router middleware

// hasProjectPremission List this
hasProjectPremission = (req, res, next) => {
  console.log(req.params); // {}
  next();
}

router.use(apiBiz.hasProjectPremission);
router.post('/:projId/api/new', apiBiz.createApi); 

When request to the create api, I can’t get req.params in hasProjectPremission, it’s an empty object({})。

[aPoCoMiLogin]

Actually middleware can get parameters from router, but it needs to know which one.

for example:

// handle any additional path with optional catch all
router.use('/:projId(\\d+)(/*)?', (req, res, next) => { 
  console.log(req.params); // { '0': undefined, '1': undefined, projId: '1337' }

  next();
});

router.post('/:projId(\\d+)/api/new', (req, res) => res.sendStatus(200))

But IMO you should use router.param which will act like an middleware, executed right before route is handled.

router.param('projId', (req, res, next, projId) => {
  // executes before route handler

  next();
});

router.post('/:projId/api/new', (req, res) => res.send(req.params.projId)) // 1337

[hstarorg]

@aPoCoMiLogin Very thanks.