multi-model/controllers/articles.js

var express = require('express');
var router = express.Router();
var Article = require('../models/articles.js');
var Author = require('../models/authors.js')

router.get('/', function(req, res){
	Article.find({}, function(err, foundArticles){
		res.render('articles/index.ejs', {
			articles: foundArticles
		});
	})
});

router.get('/new', function(req, res){
	Author.find({}, function(err, allAuthors){
		res.render('articles/new.ejs', {
			authors:allAuthors
		});
	});
});

router.post('/', function(req, res){
	Author.findById(req.body.authorId, function(err, foundAuthor){
		Article.create(req.body, function(err, createdArticle){
			foundAuthor.articles.push(createdArticle);
			foundAuthor.save(function(){
				res.redirect('/articles');
			})
		});
	});
});

router.get('/:id', function(req,res){
	Article.findById(req.params.id, function(err, foundArticle){
		res.render('articles/show.ejs', {
			article: foundArticle
		});
	});
});

router.delete('/:id', function(req, res){
	Article.findByIdAndRemove(req.params.id, function(){
		res.redirect('/articles');
	});
});

router.get('/:id/edit', function(req, res){
	Author.find({}, function(err, allAuthors){
		Article.findById(req.params.id, function(err, foundArticle){
			res.render('articles/edit.ejs', {
				article: foundArticle,
				authors: allAuthors
			});
		});
	});
});

router.put('/:id', function(req, res){
	Author.findOne({'articles._id':req.params.id}, function(err, previousAuthor){
		previousAuthor.articles.id(req.params.id).remove();
		previousAuthor.save();
	});
	Author.findById(req.body.authorId, function(err, foundAuthor){
		Article.findByIdAndUpdate(req.params.id, req.body, {new:true}, function(err, updatedArticle){
			foundAuthor.articles.push(updatedArticle);
			foundAuthor.save(function(){
				res.redirect('/articles');
			});
		});
	});
});


module.exports = router;