Heroku Node.js App Works Locally but not when deployed

Question

I have a MEAN Stack Heroku app that was running just fine. But then I added a new function:

app.get('/userCreated/:id', function(req, res) {

if (req.cookies.userCreated == req.params.id) { 
    res.send(true);
}
else {
    res.send(false);
}

});

And now I get a 503 (Service Unavailable) error upon loading the app. Anyone have an idea why this might be?

I'm using Angular and $http.get() to access this Express.js function...

Edit: here is my client side Angular code that is making a call to the server:

var deferred = $q.defer();
function thisUserCreated(id) {
$http.get('/userCreated/' + id).success(function(data) {
deferred.resolve(data);
// returns boolean indicating whether the current user has the proper cookie
// saying this user created the given group
});
return deferred.promise;
};

Solution 1

Well, I actually figured it out. Turns out I hadn't listed all my dependencies in my package.json.

Lesson here: when installing node packages always use --save

Or you're gonna have a bad time.

Solution 2

Try to recompile (ng build -prod) Angular side and deploy it again. Also watch MEAN Stack Front To Back [Part 10] - App Deployment to Heroku

Solution 3

Nothing in that block of code is inherently broken.

Just check the logs to see what's giving you errors:

heroku logs --tail

Comments

[Tushar]

is bn accidential or it is part of code

[arahansen]

Woops. Good catch. That's not the issue though. Any other thoughts?

[Tushar]

The port you are using for the server, is it free to use on deployment server

[arahansen]

Again, this function was behaving properly on localhost but acts up when deployed to heroku

[arahansen]

@Tushar I believe so. This app was working properly when deployed on Heroku prior to adding this functionality

[Pankaj Parkar]

@AndrewHansen are you using correct url while making $http.get() call?

[arahansen]

I've updated my question with the client side code that is making the http request. Maybe there's an issue there?

[arahansen]

I've updated my question with the client side code that is making the http request. Maybe there's an issue there?

[hunterloftis]

If you're getting a 503 on the server, you should really just check the server logs to see why.