title: RangeError: Invalid status code: 0
body: <p>I am having an issue where I am getting the following error code when attempting a POST request on this application (bearing in mind I am a beginner node.js/js programmer):</p>
  
  <p>Error:</p>
  
  <pre><code>[20:22:28] [nodemon] starting `node app.js`
  Running server on 3000
  Mon, 27 Jun 2016 19:22:31 GMT express deprecated res.send(status, body): Use res.status(status).send(body) instead at routes\edit.js:35:25
  c:\Users\Matt\WebstormProjects\ghs_restart\node_modules\mongodb\lib\utils.js:98
      process.nextTick(function() { throw err; });
                                    ^
  
  RangeError: Invalid status code: 0
      at ServerResponse.writeHead (_http_server.js:192:11)
      at ServerResponse._implicitHeader (_http_server.js:157:8)
      at ServerResponse.OutgoingMessage.end (_http_outgoing.js:573:10)
      at ServerResponse.send (c:\Users\Matt\WebstormProjects\ghs_restart\node_modules\express\lib\response.js:204:10)
      at ServerResponse.json (c:\Users\Matt\WebstormProjects\ghs_restart\node_modules\express\lib\response.js:249:15)
      at ServerResponse.send (c:\Users\Matt\WebstormProjects\ghs_restart\node_modules\express\lib\response.js:151:21)
      at c:\Users\Matt\WebstormProjects\ghs_restart\routes\edit.js:35:25
      at c:\Users\Matt\WebstormProjects\ghs_restart\node_modules\mongodb\lib\collection.js:416:18
      at handleCallback (c:\Users\Matt\WebstormProjects\ghs_restart\node_modules\mongodb\lib\utils.js:96:12)
      at c:\Users\Matt\WebstormProjects\ghs_restart\node_modules\mongodb\lib\collection.js:705:5
  </code></pre>
  
  <p>app.js:</p>
  
  <pre><code>var express = require('express');
  
  var router = express.Router();
  
  var app = express();
  
  var bodyParser = require('body-parser');
  app.use( bodyParser.json() );       // to support JSON-encoded bodies
  app.use(bodyParser.urlencoded({     // to support URL-encoded bodies
      extended: true
  }));
  
  var path = require('path');
  
  var port = process.env.PORT || 3000;
  
  var index = require('./routes/index');
  var edit = require('./routes/edit');
  
  app.use('/', index);
  app.use('/edit', edit);
  
  app.use(express.static(path.join(__dirname, 'public')));
  
  app.set('view engine', 'jade');
  
  app.set('views', 'views');
  
  app.listen(port, function (err) {
      console.log("Running server on", port);
  });
  
  module.exports = index;
  </code></pre>
  
  <p>The following is my edit.js route, where I believe the issue is occurring:</p>
  
  <pre><code>var express = require('express');
  
  var router = express.Router();
  
  var app = express();
  
  var bodyParser = require('body-parser');
  app.use( bodyParser.json() );       // to support JSON-encoded bodies
  app.use(bodyParser.urlencoded({     // to support URL-encoded bodies
      extended: true
  }));
  
  var path = require('path');
  
  var port = process.env.PORT || 3000;
  
  var index = require('./routes/index');
  var edit = require('./routes/edit');
  
  app.use('/', index);
  app.use('/edit', edit);
  
  app.use(express.static(path.join(__dirname, 'public')));
  
  app.set('view engine', 'jade');
  
  app.set('views', 'views');
  
  app.listen(port, function (err) {
      console.log("Running server on", port);
  });
  
  module.exports = index;
  </code></pre>