Cannot read property 'handle' of undefined. Parse.com migration

Question

Great nightmare with parse.com announcing they will be closing down next year. Now I'm trying to test their suggested solution using MongoDB. The problem is, I'm stuck with javascript errors. I got the git in parse-servir-github , added my app settings and ran the node index.js. Now, I'm getting the error when trying to access the local server:

parse-server-example running on port 1337. /Users/ferrojr/DeveloperTools/parse-server/node_modules/express/lib/application.js:120 this._router.handle(req, res, function(err) { ^

TypeError: Cannot read property 'handle' of undefined at Function.app.handle (/Users/ferrojr/DeveloperTools/parse-server/node_modules/express/lib/application.js:120:15) at Server.app (/Users/ferrojr/DeveloperTools/parse-server/node_modules/express/lib/express.js:28:9) at emitTwo (events.js:87:13) at Server.emit (events.js:172:7) at HTTPParser.parserOnIncoming [as onIncoming] (_http_server.js:528:12) at HTTPParser.parserOnHeadersComplete (_http_common.js:88:23)

Here's is the code in application.js.

app.handle = function(req, res, done) {
  var env = this.get('env');

  this._router.handle(req, res, function(err) {
    if (done) {
      return done(err);
    }

    // unhandled error
    if (err) {
      // default to 500
      if (res.statusCode < 400) res.statusCode = 500;
      debug('default %s', res.statusCode);

      // respect err.status
      if (err.status) res.statusCode = err.status;

      // production gets a basic error message
      var msg = 'production' == env
        ? http.STATUS_CODES[res.statusCode]
        : err.stack || err.toString();
      msg = escapeHtml(msg);

      // log to stderr in a non-test env
      if ('test' != env) console.error(err.stack || err.toString());
      if (res.headersSent) return req.socket.destroy();
      res.setHeader('Content-Type', 'text/html');
      res.setHeader('Content-Length', Buffer.byteLength(msg));
      if ('HEAD' == req.method) return res.end();
      res.end(msg);
      return;
    }

    // 404
    debug('default 404');
    res.statusCode = 404;
    res.setHeader('Content-Type', 'text/html');
    if ('HEAD' == req.method) return res.end();
    res.end('Cannot ' + escapeHtml(req.method) + ' ' + escapeHtml(req.originalUrl) + '\n');
  });
};

Anyway, I'm a iOS developer with no experience on node.js, I'm just trying to follow parse.com tutorial and setup my database to use mongoDB and parse server locally.

Any help is highly appreciated.

brunoazev brunoazev · Accepted Answer · 2016-01-29T14:56:24

After "var env = this.get('env');", please add "console.dir(this._router);" to log the content of the this._router variable. I guess it is undefined, and that causes the error.

The result should appear in your node.js command prompt.

Cannot read property 'handle' of undefined. Parse.com migration

1 Answers