Update

backend/app/models/mongodb.model.js

@@ -0,0 +1,12 @@
+const dbConfig = require("../config/mongodb.config");
+
+const mongoose = require("mongoose");
+mongoose.Promise = global.Promise;
+
+const db = {};
+db.mongoose = mongoose;
+db.url = dbConfig.url;
+db.tutorials = require("./tutorial.model")(mongoose);
+db.users = require("./user.model")(mongoose);
+
+module.exports = db;