couchDB unable to create a database with node.js

Question

I am new to node.js (just few days in) and am learning through a tutorial from youtube (don't know if it's allowed to post a link or not).

I am trying to create a database in couchDB. Everything works fine but as soon as I try to enter any details on the form, it displays the exception "Error creating Database Address" (Address is the name of the database I am trying to create)

I followed the tutorial very carefully and have been searching for a solution for a while now but end up with nothing.

Please help if you found something.

App.js:

var express = require('express');
var routes = require('./routes');
var http = require('http');
var path = require('path');
var urlencoded = require('url');
var bodyParser = require('body-parser');
var json = require('json');
var logger = require('logger');
var methodOverride = require('method-override');

var nano = require('nano')('http://admin:password@localhost:5984');

var db = nano.use('address');
var app = express();

app.set('port', process.env.PORT || 3000);
app.set('views',path.join(__dirname,'views'));
app.set('view engine', 'jade');

app.use(bodyParser.json());
// app.use(bodyParser.urlencoded());
app.use(bodyParser.urlencoded({
    extended: true
}));
app.use(methodOverride());
app.use(express.static(path.join(__dirname, 'public')));

app.get('/',routes.index);

app.post('/createdb', function(req, res) {
    nano.db.create(req.body.dbname, function(err){
        if(err) {
            res.send("Error creating Database " + req.body.dbname);
            return;
        }

        res.send("Database " + req.body.dbname + "created successfully");
    });
});

app.post('/new_contact', function(req, res) {
    var name = req.body.name;
    var phone = req.body.phone;

    db.insert({name : name, phone : phone, crazy : true}, phone, function(err,body, header) {
        if(err) {
            res.send("Error creating contact");
            return;
        }
        res.send("Contact created successfully");
    });
});


app.post('/view_contact', function(req, res) {
    var alldoc = "Following are the contacts";
    db.get(req.body.phone, {revs_info : true}, function(err, body) {
        if(!err) {
            console.log(body);
        }
        if(body) {
            alldoc += "Name: " + body.name + "<br/>Phone Number: " + body.phone;
        }
        else {
            alldoc = "No records found";
        }
        res.send(alldoc);
    });
});


app.post('/delete_contact', function(req, res) {
    db.get(req.body.phone, {revs_info : true}, function(err, body) {
        if(!err) {
            db.destroy(req.body.phone, body._rev, function(err, body) {
                if(err) {
                    res.send("error deleting contact");
                }
            });
            res.send("Contacts deleted successfullly");
        }
    });
});


http.createServer(app).listen(app.get('port'), function() {
    console.log('Express server listening on port: ' + app.get('port'));
});

index.js

exports.index = function(req,res) {
    res.render('index', {title: 'express'});
};

createdb.js

exports.create = function(req, res) {
    nano.db.create(req.body.dbname, function() {
        if(err) {
            res.send("Error creating the Database");
            return;
        }
        res.send("database created successfully");
    });
};

index.js and createdb.js both are in routes folder

index.jade

extend layout 

block content 
    h1 Add new Contact 
    form(method="POST", action = '/new_contact')
        p name:
        input#title(type = "text", name = "name")
        p Phone No.: 
        input#title(type = "text", name = "phone")

        p: button(type = "submit") Add new Contact 

    h1 Add new Database 
    form(method = "POST", action= "/createdb")
        p Database name: 
        input#title(type = "text", name = "dbname")
        
        p: button(type="submit") Add new Database

    h1 enter Phone number to delete new_contact
    form(method = "POST", action= "/delete_contact")
        p Phone No.: 
        input#title(type = "text", name = "phone")
        
        p: button(type="submit") Delete Contact 

    h1 View Specific contact
    form(method = "POST", action= "/view_contact")
        p Phone No.: 
        input#title(type = "text", name = "phone")
        
        p: button(type="submit") Search Contact

layout.jade

doctype html
html
    head
        title = title 
        //- link(rel='stylesheet', href='/stylesheet/style.css')
    body 
        block content

layout.jade and index.jade are present in views folder

package.json

{
  "name": "sample",
  "version": "1.0.0",
  "description": "just a sample.",
  "main": "app.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "",
  "license": "ISC",
  "dependencies": {
    "body-parser": "^1.19.0",
    "errorhandler": "^1.5.1",
    "express": "^4.17.1",
    "express-session": "^1.17.1",
    "jade": "^1.11.0",
    "json": "^10.0.0",
    "logger": "0.0.1",
    "method-override": "^3.0.0",
    "nano": "^9.0.3",
    "pug": "^3.0.2",
    "serve-favicon": "^2.5.0",
    "url": "^0.11.0"
  }
}

Answer 1

Just briefly skimming over the code, it looks like you're not passing any authentication details to nano:

var nano = require('nano')('http://localhost:5984');
var db = nano.use('address');

/* ... */

app.post('/createdb', function(req, res) {
    nano.db.create(req.body.dbname, function(err){

This might have worked in old versions of CouchDB running in admin party mode, which is not supported anymore from CouchDB 3.0 onwards.

When installing CouchDB locally, you'll need to setup a admin user and password before getting started.

When using nano, you need to provide the credentials like:

var nano = require('nano')('http://admin:password@localhost:5984')