Naming Error: "uninitialized constant ActionRecord"

Rails
1

I’m using Rails 2.0.2 with Ruby 1.8.6 on Mac OSX Leopard. I’m trying to
follow the instructions in “Ruby for Rails” by David A. Black but I’m
getting an error when I attempt to display one of the views. I know the
book was written for Rails 1.X and I’m assuming that’s where the problem
is.

For my methods I have:

class Composer < ActiveRecord::Base
has_many :works
end

class Work < ActionRecord::Base
belongs_to :composer
has_many :editions
end

For my composer controller I have:
class ComposerController < ApplicationController
def show
@composer = Composer.find(params[:id])
end
end

Then in the view I’m having problems with this line:
<% @composer.works.each do |w| %>

Here’s the actual error:
NameError in Composer#show

Showing composer/show.html.erb where line #5 raised:

uninitialized constant ActionRecord

Extracted source (around line #5):

2: “Works by #{@composer.first_name} #{@composer.last_name}” %>
3:

Click on any work to see all available editions of that work.


4:

    5: <% @composer.works.each do |w| %>
    6:
  • <%= link_to w.title,
    7: :controller => “work”,
    8: :action => “show”,

    I think it’s having a problem with me calling “works” on
    Composer.find(params[:id]) but since work belongs_to composer and
    composer has_many works, I don’t know what the naming error is. Do I
    have to specify a foreign_key in the method to “works”? If so, what
    would the default be if not “works”.

2

Hi –

On Sat, 22 Mar 2008, Kelly T. wrote:

has_many :works
Showing composer/show.html.erb where line #5 raised:

uninitialized constant ActionRecord

My fault. It says ActionRecord in the book; it should be ActiveRecord.
Not my finest hour, apparently. But hang in there – there’s some
really good stuff in that book :slight_smile:

David

–
Upcoming Rails training from David A. Black and Ruby Power and Light:
ADVANCING WITH RAILS April 14-17 New York City
INTRO TO RAILS June 9-12 Berlin
ADVANCING WITH RAILS June 16-19 Berlin
CORE RAILS June 24-27 London (Skills Matter)
See http://www.rubypal.com for more info!

3

David A. Black wrote:

Hi –

On Sat, 22 Mar 2008, Kelly T. wrote:

has_many :works
Showing composer/show.html.erb where line #5 raised:

uninitialized constant ActionRecord

My fault. It says ActionRecord in the book; it should be ActiveRecord.
Not my finest hour, apparently. But hang in there – there’s some
really good stuff in that book :slight_smile:

David

–
Upcoming Rails training from David A. Black and Ruby Power and Light:
ADVANCING WITH RAILS April 14-17 New York City
INTRO TO RAILS June 9-12 Berlin
ADVANCING WITH RAILS June 16-19 Berlin
CORE RAILS June 24-27 London (Skills Matter)
See http://www.rubypal.com for more info!

Doh, I should have realized that when there was no reference to
“ActionRecord” on google.

Thanks for the quick reply. I love the book by the way. I’m new to
programming and I was trying to struggle through “Building Your Own Ruby
On Rails Web Applications.” A friend of mine recommended “Ruby for
Rails” as a better introduction book. It’s exactly what I needed,
everything just clicks. =)