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Editorial Team
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Asked: 2026-05-23T05:13:25+00:00

I have a rails application that is up and running on Ubuntu virtual machine

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I have a rails application that is up and running on Ubuntu virtual machine and on several different installations.

I have a new computer and after installing Ruby and Rails (using rvm) I can run the application but when accessing views the helper functions are not found. The helper :all line is in the ApplicationController.

I am pretty sure this is a problem with my environment and not the app. Is there a missing gem that would cause this problem?

Can you recommend any steps that I could take to debug this issue?

MacBook-Air:cyberdojo mike$ ruby -v
ruby 1.8.7 (2011-02-18 patchlevel 334) [i686-darwin10.7.0]
MacBook-Air:cyberdojo mike$ rails -v
Rails 2.3.11

The actual error I get is this:

NoMethodError in Dojo#create

Showing app/views/dojo/create.html.erb where line #62 raised:

undefined method `ellided_name' for #<ActionView::Base:0x101fabf70>
Extracted source (around line #62):

59:        value="<%=@dojo.name-%>" />
60: 
61: <h1 title="<%= @dojo.name-%>">   
62:   <%= ellided_name(@dojo.name, 40) %>
63: </h1>
64: 
65: <table align="center">

The source code can be seen here: https://github.com/meekrosoft/cyberdojo

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1 Answer

  1. Editorial Team

    Your vendor directory has a bunch of symlinks to /usr/share/rails. That’s probably why it’s working on some servers (because on those servers those symlinks are working) and not on others.

    Your helpers aren’t working because they should be within modules, so app/helpers/ellided_name.rb should have:

    module EllidedName
  # code you have in the file now
end

    I’m guessing that some older version of Rails (the one you have in /usr/share/rails on your servers) allowed the non-module syntax.

    Warning based on the 2.1.0 in your config/environments.rb this app has been around for a long time, and if the /usr/share/rails version is anywhere close to 2.1 then this will be the first of many problems you’ll have trying to run this app as-is in 2.3.

    Update

    The OP discovered a gap in my recommendation, I’m just adding it here for anyone who finds this in google – he also needed to add the _helper suffix to the filenames, so as well as adding the module wrappers within the files he had to change app/helpers/ellided_name.rb to app/helpers/ellided_name_helper.rb and (he didn’t say, but I’m sure) the module name needed to reflect this, so EllidedNameHelper instead of just EllidedName

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