Ruby on Rails module require issue

Question

I'm divin to the Rails 3 via some tutorials. I found usefull the lynda.com/Kevin Skoglund's Rails 3 Essential training. Close to the end of the course I run into a problem what I can't solve and no reference found on the net (or lynda's site).

There is a position_mover (similar to act_as_list, but simpler) module what I must include to the model's to use. But I'm getting errors. This one:

LoadError in SubjectsController#index

no such file to load -- lib/position_mover
Rails.root: C:/Programozas/work/simple_cms

Application Trace | Framework Trace | Full Trace
app/models/subject.rb:1:in `<top (required)>'
app/controllers/subjects_controller.rb:13:in `list'
app/controllers/subjects_controller.rb:8:in `index'
This error occurred while loading the following files:
lib/position_mover
Request

Parameters:

None
Show session dump

Show env dump

Response

Headers:

None

I have access to the example files also. I tried to hard copy the whole app, than modify the gems versions to be correct and I get the same error. The app runs perfectly untill I try to access a model, where the require presented.

A model:

require 'lib/position_mover'
class Subject < ActiveRecord::Base

include PositionMover

has_many :pages
...
end

I'm sure this is a kind of mega easy thing what I can't recognise. Please help to identify the problem! Yours, Kael

What if you remove the lib/ part? If the gem is in your Gemfile it is not even necessary to require it. — Mischa
– Mischa, Commented Jun 7, 2011 at 7:44
What mischa said, plus requireing stuff in a model is just bad. Keep it to initializers, or at least within the config/ directory. Also: if the app tells you the file does not exist, then the file does not exist. Read the fine manual. — fx_
– fx_, Commented Jun 7, 2011 at 11:24
Mischa: tx dude, I love you. Your reply solved the problem. I know, pay forvard, but I can't up your answer so thank you. — Kael
– Kael, Commented Jun 7, 2011 at 12:28
@mischa you could add your answer as an answer and @kael can check it as the right one so you both win. — Tim Snowhite
– Tim Snowhite, Commented Jun 7, 2011 at 15:25
@Tim, OK, I'll add it. @Kael, added my comment as an answer, so you can accept it. — Mischa
– Mischa, Commented Jun 7, 2011 at 23:01

Mischa · Accepted Answer · 2011-06-07 23:01:35Z

2

What if you remove the lib/ part? If the gem is in your Gemfile it is not even necessary to require it.

answered Jun 7, 2011 at 23:01

Mischa

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