Replace .push with .concat to port to Mongodb 4, fixes Unknown modifier: $pushAll

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "react-redux-realworld-example-app"]
+	path = react-redux-realworld-example-app
+	url = https://github.com/cirosantilli/react-redux-realworld-example-app

README.adoc

@@ -0,0 +1,20 @@
+# Node Express Mongoose Realworld Example App
+
+....
+cd react-redux-realworld-example-app
+npm install
+cd ..
+npm install
+....
+
+To run development server, start `mongod` on the standard port 27017 and run:
+
+....
+npm run dev
+....
+
+This automatically opens a browser at http://localhost:4101/
+
+The database name is `realworld_express`.
+
+TODO deployment.

app.js

@@ -33,7 +33,7 @@ if (!isProduction) {
 if(isProduction){
   mongoose.connect(process.env.MONGODB_URI);
 } else {
-  mongoose.connect('mongodb://localhost/conduit');
+  mongoose.connect('mongodb://localhost/realworld_express');
   mongoose.set('debug', true);
 }
 

models/User.js

@@ -60,7 +60,7 @@ UserSchema.methods.toProfileJSONFor = function(user){
 
 UserSchema.methods.favorite = function(id){
   if(this.favorites.indexOf(id) === -1){
-    this.favorites.push(id);
+    this.favorites = this.favorites.concat([id]);
   }
 
   return this.save();
@@ -79,7 +79,7 @@ UserSchema.methods.isFavorite = function(id){
 
 UserSchema.methods.follow = function(id){
   if(this.following.indexOf(id) === -1){
-    this.following.push(id);
+    this.following = this.following.concat([id]);
   }
 
   return this.save();