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POHow do I setup MongoDB database on Heroku with MongoLab?
 

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  1. POHow do I setup MongoDB database on Heroku with MongoLab?
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    <p>I'm using Express.js and MongoLab and I followed the <a href="https://devcenter.heroku.com/articles/nodejs#using-mongodb">Heroku setup to get MongoDB working</a> in production throwing this code in my <strong>app.js</strong>. </p> <pre><code>//Mongo on Heroku Setup var mongo = require('mongodb'); var mongoUri = process.env.MONGOLAB_URI || process.env.MONGOHQ_URL || 'mongodb://localhost/mydb'; mongo.Db.connect(mongoUri, function (err, db) { db.collection('mydocs', function(er, collection) { collection.insert({'mykey': 'myvalue'}, {safe: true}, function(er,rs) { }); }); }); </code></pre> <p>and I have the following routes and field for my email form (also in app.js):</p> <pre><code>//Routes app.get('/', function(req, res) { res.render('index', { title: 'DumbyApp' }); }); //save new email app.post('/', function(req, res){ emailProvider.save({ address: req.param('address') }, function( error, docs) { res.redirect('/') }); }); </code></pre> <p>This renders the new form on the index page and lets me save it locally but not in production because I don't know how to setup my email collection. Can anyone walk me through this? brand new to using MongoDB and Node.js, so could use some help.</p> <p>EDIT:</p> <p>In The MongoLab Database Interface, I made a <code>collection</code> called <code>emails</code>. Is this the right course of action?</p> <p>EDIT 2:</p> <p>Here's defining EmailProvider in app.js along with the file itself.</p> <p><strong>app.js</strong></p> <pre><code> var express = require('express') , routes = require('./routes') , user = require('./routes/user') , http = require('http') , path = require('path') , EmailProvider = require('./emailprovider').EmailProvider; var emailProvider= new EmailProvider('localhost', 27017); </code></pre> <p><strong>emailprovider.js</strong></p> <pre><code>var Db = require('mongodb').Db; var Connection = require('mongodb').Connection; var Server = require('mongodb').Server; var BSON = require('mongodb').BSON; var ObjectID = require('mongodb').ObjectID; EmailProvider = function(host, port) { this.db= new Db('localdb', new Server(host, port, {safe: false}, {auto_reconnect: true}, {})); this.db.open(function(){}); }; EmailProvider.prototype.getCollection= function(callback) { this.db.collection('emails', function(error, email_collection) { if( error ) callback(error); else callback(null, email_collection); }); }; //save new email EmailProvider.prototype.save = function(emails, callback) { this.getCollection(function(error, email_collection) { if( error ) callback(error) else { if( typeof(emails.address)=="undefined") emails = [emails]; for( var i =0;i&lt; emails.address;i++ ) { email = emails[i]; email.created_at = new Date(); } email_collection.insert(emails, function() { callback(null, emails); }); } }); }; exports.EmailProvider = EmailProvider; </code></pre>
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    1. COHi! There seems to be some context missing. Your MongoDB connection code looks fine, but what's the definition of emailProvider?
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    2. CO@robert OK, I edited to make it more understandable of what's going on.
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    3. COAm I reading correctly that your EmailProvider is connecting to localhost:27017? Are you trying to connect it to your MongoLab database instead?
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