exit from chain of route specific middleware in express/ nodejs

Question

I have a chain of \"route specific middleware\" for this route, like so:

    var express = require(\'express\');
    var server = express();
    var mw1 = functi         


        

Answer 1

I was under the impression that if you neither call next() nor send a response in a route handling function, express just hangs. Also FWIW I haven't used an array, mine looks like server.post('/some/path', mw1, mw2, function(req, resp) {...

Anyway. One alternative might be to restructure your code so you only have a single handling function. Do you have a good reason for mw1 and mw2 being middleware instead of regular async functions your handler calls?

var express = require('express');
var server = express();

var mw1 = function(req, res, callback) {
  // do stuff with req/res if necessary but don't send a response
  if (success) {
    callback(null);
  } else {
    callback('Error');
  }
};

var mw2 = function(req, res, callback) {
  //do other stuff but don't send a response
  if (success) {
    callback(null);
  } else {
    callback('Error');
  }
};

function mwBoth(req, res){
  mw1(req, res, function(err){
    if(err){ return res.send(500) };
    mw2(req, res, function(err){
      if(err){ return res.send(500) };
      // neither had an error
      res.redirect('/some/other/path');
    });
  });
};

server.post('/some/path', mwBoth);