How to use nodejs RESTful api to query from multiple collections? - node.js

Question

nodejs noobie here,
I have created nodejs RESTful api for fetching data from three different collections. Here is the article which helped me nodejs api in 10 minutes
After creating APIs, I am able to hit the APIs through postman and get data there. Now I wish to move on to next step of querying records from multiple collections
Server.js
var express = require('express'),
app = express(),
port = process.env.PORT ||3000,
mongoose = require('mongoose'),
menu = require('./app/api/bestseller_books/models/bestsellerBooksModel'),
admin = require('./app/api/admin/models/adminModel'),
test = require('./app/api/test/models/testModel'),
bodyParser = require('body-parser');
var Schema = mongoose.Schema;
var cors = require('cors');
// mongoose instance connection url connection
mongoose.Promise = global.Promise;
mongoose.connect('mongodb://localhost:27017/takebook', { useMongoClient: true });
/*mongoose.model('menu', new Schema({ title: String, id: Number }));*/
var menu = mongoose.model('bestseller_books');
var test = mongoose.model('test');
var admin = mongoose.model('admin');
var routes = require('./app/api/bestseller_books/routes/bestsellerBooksRoutes');
var routes2 = require('./app/api/admin/routes/adminRoutes');
var routes3 = require('./app/api/test/routes/testRoutes');
menu.find({}, function(err, data) { console.log(err, data.length); });
app.use(bodyParser.urlencoded({ extended: true }));
app.use(bodyParser.json());
app.use(cors());
routes(app); //register the route
/*routes2(app);
routes3(app);*/
app.listen(port);
app.use(function(req, res) {
res.status(404).send({url: req.originalUrl + ' not found'})
});
console.log('RESTful API server started on: ' + port);
bestsellerbooks controller
'use strict';
var mongoose = require('mongoose'),
menu = mongoose.model('bestseller_books');
exports.list_all_menus = function(req, res) {
menu.find({}, function(err, menu) {
if (err)
res.send(err);
res.json(menu);
console.log(res);
});
};
exports.create_a_menu = function(req, res) {
var new_menu = new menu(req.body);
new_menu.save(function(err, menu) {
if (err)
res.send(err);
res.json(menu);
});
};
exports.read_a_menu = function(req, res) {
menu.findById(req.params.menuId, function(err, menu) {
if (err)
res.send(err);
res.json(menu);
});
};
exports.update_a_menu = function(req, res) {
menu.findOneAndUpdate({_id: req.params.menuId}, req.body, {new: true}, function(err, menu) {
if (err)
res.send(err);
res.json(menu);
});
};
exports.delete_a_menu = function(req, res) {
menu.remove({
_id: req.params.menuId
}, function(err, menu) {
if (err)
res.send(err);
res.json({ message: 'bestseller_books successfully deleted' });
});
};
My questions are :
Do I have to create new set of models, controllers and routes for
each API?
Looking at the server.js, is this the best practice of
setting up API routes?
What is the use of create_a_menu methods
mentioned in API controllers, if I have to hit API in this format:
app.controller('booklister', ['$http', function($http) {
var self = this;
$http.get('http://localhost:3000/bestseller_books')
.then(function(response)
{
/*$('.fa-refresh').hide();*/
self.items = response.data;
}, function(errResponse) {
/*$('.fa-refresh').show();*/
console.error('Service Error while fetching books' + errResponse);
});

Answer 1

Just create more from everything.
New model, new schema, new Bl layer, new route that take care for that new collection.
For example:
In yore dotsModel.js:
var mongoose = require('mongoose');
var Schema = mongoose.Schema;
var DotsSchema = new Schema({
x: {
type: Number
},
y: {
type: Number
}
});
module.exports = mongoose.model('Dots', DotsSchema);
In youre dotsController.js:
var mongoose = require('mongoose'),
Dots = mongoose.model('Dots')
exports.get_all_dots = function (req, res) {
Dots.find({}, function (err, task) {
if (err)
res.send(err);
res.json(task);
});
};
And in your dotsRoutes.js:
module.exports = function(app) {
var todoList = require('../controllers/ dotsController.js:');
app.route('/dots')
.get(todoList.get_all_dots);
Note:
The article you read is short and he touch really briefly on each topic, it's highly recommended to take another course, much longer, and take the time to learn each part of your application, and what node capable of.