bwdbooks / nodejs-mongodb-angularjs-web-development Goto Github PK

The code to update a doc using the save() fails with a validation error. It turns out that the 'book' word used in the example fails to satisfy the schema particularly with its 'charsets' property which in the database is an empty array.
to make the example work either one of two options can be used:

1. disable validation by adding after line 3 the statement:
   wordSchema.set('validationBeforeSave',false);
2. or modify the book documents to add the missing value of the property 'charsets' .

Thanks for a very informative book.
Line 5 in mongoose_connect.js should read:

mongoose.connection.db.listCollections().toArray(function(err, names){

as collectionNames is now deprecated.

When I try to run the code I get this error:

node auth_server.js

events.js:72
throw er; // Unhandled 'error' event
^
Error: listen EACCES
at errnoException (net.js:901:11)
at Server._listen2 (net.js:1020:19)
at listen (net.js:1061:10)
at Server.listen (net.js:1135:5)
at Function.app.listen (/home/ubuntu/htdocs/joolip/node_modules/express/lib/application.js:532:24)
at Object. (/home/ubuntu/htdocs/joolip/auth_server.js:27:5)
at Module._compile (module.js:456:26)
at Object.Module._extensions..js (module.js:474:10)
at Module.load (module.js:356:32)
at Function.Module._load (module.js:312:12)

I believe there is something wrong with the code, as I am receiving an error code of 'fd must be a file descriptor'.

Can you please advise? Thanks

I am new nodejs/mongodb I see the code but I want to know how to execute shopping cart app. there are other files missing like package.json or may be other files. can you help to set it up?

Hi Brad,
I really liked your book "Node.js, MongoDb, Angularjs Web Development". Only issue I had with your GitHub files is that bodyParser has been depreciated and the new info isn't in your samples. I think this happened about the time you published the book.

I changed samples as needed to be:
app.use(bodyParser.urlencoded({ extended: true }));
app.use(cookieParser());

Also express-session seems to need resave and saveUninitialized to be set to true/false (no longer defaults)

After the above changes ALL your samples ran great! (and that's a big deal). Your book is one that I will keep close at hand. Thanks much!

I would offer the changes as a pull request but I have mangled your samples trying out various "what happens if I do this" experiments.

Cheers
Charlie

I have mongodb installed and trying to run chapter26 with command: node auth_server.js and I get error: Failed to load c++ bson extension, using pure JS version. I tried various option to upgrade/downgrade mongodb but could not get around the issue. Is it possible to include package.json in chapter26 first and later to other so I could run npm install and get all the correct version of required package.

Regards,

Praveen

On chapter 8 after running

node socket_client.js

I get the error

events.js:72
        throw er; // Unhandled 'error' event
              ^
Error: connect ECONNREFUSED
    at errnoException (net.js:904:11)
    at Object.afterConnect [as oncomplete] (net.js:895:19)

Use Chrome Developer tools, the following issue was found:
GET http://localhost:3000/images/ 404 (not found)

I believe that line 57: res.redirect(/'login'); would cause an error since you already redirect in line 55, during an authentication failure. When I run the sample, the app crashes out when you enter an invalid password. Removing line 57 fixed it.

The error: Error('Can't set headers after they are sent.')

Ch15 : doc_paging.js
I thought that placing the pagination within a recursive call would be a good idea as well but the recursion occurs quicker than mongodb can query the database. So on my machine the database is closed before each 'page' is printed.

What would be a good workaround for this?