Getting Started with Meteor.js JavaScript Framework

Errata type: Code | Page number: 20

Under the heading "Adding some data", the console commands read:

> lists.insert({Category:"DVDs", items: {Name:"Mission Impossible" ,Owner:"me",LentTo:"Alice"}});

> lists.insert({Category:"Tools", items: {Name:"Linear Compression Wrench",Owner:"me",LentTo: "STEVE"}});

They need to read:

> lists.insert({Category:"DVDs", items: [{Name:"Mission Impossible" ,Owner:"me",LentTo:"Alice"}]});

> lists.insert({Category:"Tools", items: [{Name:"Linear Compression Wrench",Owner:"me",LentTo: "STEVE"}]});

(Added square brackets)

Errata type: Others | Chapter number: 4 | Errata date: 18 Dec 08

The code doesn't work on Mozilla Firefox 18.0.1 on Linux Mint Nadia 64 bit.

It's ok on Chrome - same O.S.

Errata type: Others | Chapter 5 - commands 4 & 5 | Errata date: 4-2-2013

In Chapter 5 "Using Direct Commands", the following commands need to be  
changed:

db.getCollection('lists')
myLists = db.getCollection('lists')

- CHANGE TO -

db.getCollection('Lists')
myLists = db.getCollection('Lists')

When the Collection was created in Chapter 2 - "Creating a collection", we  
called the collection 'Lists':

var lists = new Meteor.Collection("Lists");

Errata type: Others | Page number: Kindle: 1693 of 2131 | Bug in the Chapter 6 source | Errata date: 12-2-2013

You need to use Meteor.userId() instead of this.userId inside your template  
event handler:

if (catVal) {
  /* lists.insert({Category:catVal,owner:this.userId});   BUG */
  lists.insert({Category:catVal,owner:Meteor.userId()});  /* correct */
  Session.set('adding_category', false);
}

"this" is not defined in Template.categories.events, so you are reading the  
global "window.userId".  Somewhat by accident, this ends up partially working  
if you just refresh the page.  The reason is because even though  
window.userId does not exist on first page load, if you click "Refresh", the  
Meteor code that tries to login using a login token stored in localStorage  
(localstorage_token.js) makes a temporary global "var userId" that is set to  
the most recent login userId.  So then your code is reading a valid and  
current userId.

The bug is most noticeable if you logout and login as someone else without  
hitting Refresh.  In this case, the insert will be denied because the  
"window.userId" is set to the previously logged in user, and not the  
currently logged in Meteor.userId()

Errata type: Others | Page number: 45 | Errata date: 14-2-2013

The whole paragraph which begins with: One more thing to add..
and the following code could be removed:

    'focusout #add-category': function(e, t) {
      Session.set('adding_category', false);
    }

Errata type: code | Page number: Chapter 2. Reactive Programming… It's Alive!, Creating a reaction | Errata date: 18 Dec 08

lists.remove({Category:"Fraggles"}) does not work

lists.remove({Category:"Fraggles"})
Error: Not permitted. Untrusted code may only remove documents by ID. [403]
details: undefined
error: 403
errorType: "Meteor.Error"
get stack: function () { [native code] }
message: "Not permitted. Untrusted code may only remove documents by ID.  
[403]"
reason: "Not permitted. Untrusted code may only remove documents by ID."
set stack: function () { [native code] }

It works with the following command:
lists.remove({"_id":"o9a5Pmt9k6BYtmqzo"})


The IDs at creation time are as follows:

lists.insert({Category:"Fraggles"});
"AL34d7hB4L9Y7rcpE"

lists.insert({Category:"Fraggles"});
"o9a5Pmt9k6BYtmqzo"

Errata type: Code| Page number: Chapter 2. Reactive Programming… It's Alive!, | Errata date: 18-4-2013

In the example:

var lists = new Meteor.Collection("Lists");

should read instead

lists = new Meteor.Collection("Lists");

The reason is that "...Meteor 0.6 has added file-level JavaScript variable  
scoping. Variables declared with var at the outermost level of a JavaScript  
source file are now private to that file. Remove the var to share a value  
between files."