Why can't I push an object into the database using the post method, with get everything works with a bang?

Question

Node.js

var express = require('express');
var mongoose = require('mongoose');
mongoose.connect('localhost:/testDb')
var Schema = mongoose.Schema;
var usersSchema = new Schema({name: String});
var User = mongoose.model('users', usersSchema);
var app = express();


app.get('/', function(req,res){
    res.send('hello');
})

app.get('/users',function(req, res){
    mongoose.model('users').find({}, {_id: false}, function(err, users){
        res.send(users);
    })
})

app.post('/adduser/:name', function(req, res){        //Не работает пост-метод. С get все отлично
    var name = req.params.name;
    var user = new User({name: name}).save();
    res.send(name + ' was added to DB');
})



var server = app.listen(3030);