while editing article, can push it onto author’s array

controllers/articles.js

@@ -1,6 +1,7 @@
 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){
@@ -35,16 +36,24 @@ router.delete('/:id', function(req, res){
 });
 
 router.get('/:id/edit', function(req, res){
-	Article.findById(req.params.id, function(err, foundArticle){
-		res.render('articles/edit.ejs', {
-			article: foundArticle
+	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){
-	Article.findByIdAndUpdate(req.params.id, req.body, function(){
-		res.redirect('/articles');
+	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');
+			});
+		});
 	});
 });
 

models/authors.js

@@ -1,7 +1,9 @@
 var mongoose = require('mongoose');
+var Article = require('./articles.js');
 
 var authorSchema = mongoose.Schema({
-	name: String
+	name: String,
+	articles: [Article.schema]
 });
 
 var author = mongoose.model('Author', authorSchema);

views/articles/edit.ejs

@@ -25,6 +25,12 @@
 				<textarea name="body">
 					<%=article.body%>
 				</textarea><br/>
+				Choose and author:
+				<select name="authorId">
+					<% for(var i = 0; i < authors.length; i++) { %>
+						<option value="<%=authors[i]._id %>"><%=authors[i].name %></option>
+					<% } %>
+				</select><br/>
 				<input type="submit" value="Update Article"/>
 			</form>
 		</main>