mongoose.connect(), first argument should be String, received undefined

Question

I am trying to set the test database for the testing purpose, but its not working.

I am trying to connect to mongodb using mongoose, but finding problem in connection er

Answer 1

What I was doing wrong was I created js file to store the key:

module.export = {
MONGOURI : "Your Key"
}

and from my app.js I was fetching the key with different keyname like

const {MongoUri} = require('./keys')

after changing MongoUri to MONGOURI , it worked fine.

Answer 2

const db = process.env.MONGO || 'test'    
    
mongoose.connect(db, {
      useNewUrlParser: true,
      useUnifiedTopology:true,
      useCreateIndex: true
    }).then(()=>{
      console.log("conected to mongodb");
    }).catch(error => {
      console.log("mongo error",error);
    })

Answer 3

I had the same problem, but then I realized that I saved the .env file as .env.txt which caused the issue. I deleted the file and created another file without .txt at the end and everything worked find.

I hope this helps.

Dhiya Aljaradi