We try to keep our books accurate, but sometimes mistakes creep in. This page lists the errors submitted by our astute readers. If you've found a new error, please submit it.

The latest version of the book is P1.0, released about 1 month ago. If you've bought a PDF of the book and would like to upgrade it to this version (for free), visit your home page.

Key: Typo Tech. Error Suggestion Not a problem Next edition

By default this page displays the errata for the latest version of the book. If you have a previous version, select it here:  

(To find out what version you have, look at the copyright page, a few pages in from the front of the book. If it says (say) 'Second Printing', then here it'll be P2.0. If there are interim PDF releases in that printing, they'll be 2.1, 2.2, and so on.)

PDF Paper Description Found in Fixed in
27
#36236: In the new method of invitations_controller.rb, a variable is declared as @from_user_id = facebook_session.user.to_s. This is then referenced...more...
P1.0
01-Dec-08
36

#36014: I found it was much easier to install facebooker by installing it from facebooker.rubyforge.org/svn/trunk/facebooker/. No need for git.
--dzengal.com

P1.0
20-Nov-08
38
#36148: The set_current_user method in app/controllers/application.rb needs to be updated to pass in a second facebook_session parameter otherwise the...more...
P1.0
26-Nov-08
39
#34506: Setting up the invitation page, (/app/views/invitations/new.erb) I had to give it an fbml.erb extension instead of just .erb, and then I had t...more...
B8.0
15-Sep-08
44

#36252: <fb:profile-pic uid="<%id%>" /> should be <fb:profile-pic uid"<%user%>" />--Joseph Rork

P1.0
02-Dec-08
54
#36021: With Rails 2.1.2, the purpose of :limit has changed when specifying the length of an integer. Instead of doing :limit => 20, it should be :li...more...
P1.0
20-Nov-08
81
#36237: Refers to 1st paragraph, last sentence: Once we have created the fb_dashboard with the fb_action and fb_help, since we have a Help and Feed...more...
P1.0
01-Dec-08
86
#36149: This is concerning Footnote 6 on installing will_paginate. According to errtheblog.com, installing will_paginate by running script/plugin in...more...
P1.0
26-Nov-08
91
#36150: The generate publisher command has apparently changed: Before: script/generate publisher attack After: script/generate facebook_publis...more...
P1.0
26-Nov-08
113
#36238: I found that in the code for new.erb the new_attack_path method needs to be substituted for a new_attack_url method otherwise there will be ro...more...
P1.0
01-Dec-08
114
#36159: Under the fb_request_form method, there is a fb_request_form_submit method. This is not needed as the fb_multi_friend_selector method already...more...
P1.0
28-Nov-08
115
#36209: The line: "Since our partial is for AttackPublisher, I'll put it in app/views/attack_publisher/_profile.erb" initially confused me since the a...more...
P1.0
01-Dec-08
127 128
#35202: You use a method potential_disciples(friend_ids) on page 128, but you never mention defining it in any of the previous sections. it’s also inc...more...
B8.0
13-Oct-08