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backend/app/config/mongodb.config.js

@@ -1,3 +1,4 @@
 module.exports = {
-  url: "mongodb://mongodb:27017/polynotfound"
+  prodUrl: "mongodb://mongodb:27017/polynotfound",
+  devUrl: "mongodb://127.0.0.1:27017/polynotfound"
 };

backend/app/models/mongodb.model.js

@@ -1,11 +1,16 @@
 const dbConfig = require("../config/mongodb.config");
-
 const mongoose = require("mongoose");
 mongoose.Promise = global.Promise;
 
 const db = {};
 db.mongoose = mongoose;
-db.url = dbConfig.url;
+
+if(typeof process.env.NODE_ENV !== 'undefined' && process.env.NODE_ENV === 'production'){
+  db.url = dbConfig.prodUrl;
+} else {
+  db.url = dbConfig.devUrl;
+}
+
 db.users = require("./user.model")(mongoose);
 db.playlists = require("./playlist.model")(mongoose);
 db.ads = require("./ad.model")(mongoose);

backend/server.js

@@ -13,6 +13,7 @@ const cors = require('cors');
 app.use(cors({origin: 'http://localhost:4200', credentials: true}));
 
 const db = require("./app/models/mongodb.model");
+console.log("Db Url: ",db.url);
 db.mongoose
   .connect(db.url, {
     useNewUrlParser: true,