Question

I created a Gem with models (actually, extracted it from the main project) to share amongst the projects we have in our platform.

We have dozens of models, so instead of requiring them one by one, I wrote the following code:

Gem.find_files("my_gem/models/*.rb").each { |path| require path }

I access one of the projects that has my_gem in the gem file and running rails c I get the following output:

/Users/myuser/.rvm/gems/ruby-1.9.3-p194/gems/activerecord-3.2.8/lib/active_record/dynamic_matchers.rb:50:in `method_missing': undefined method `has_attached_file' for #<Class:0x007fad4b93ccb8> (NoMethodError)

One of my models is using the gem paperclip, what is weird is:

1. If I remove the line declared above to load all the models
   automatically, rails c runs fine
2. If I try to include onlye the model that uses paperclip require
"my_gem/models/paperclip_model" I receive the same error

So then I change my gem to not load any model, and when I try to reference any model from rails console, it says the class is not loaded, but then I run Gem.find_files("my_gem/models/*.rb").each { |path| require path } or require "my_gem/models/paperclip_model" ‘they work perfectly and I am able to work with the model.

Has any of you seen the same issue?

Answer 1

Seems that changing require for autoload solved the problem

I changed Gem.find_files("my_gem/models/*.rb").each { |path| require path }

for

Gem.find_files("my_gem/models/*.rb").each do |f| 
  filename = File.basename(f, '.*')
  class_name_symbol = filename.classify.to_sym
  autoload class_name_symbol, "my_gem/models/#{filename}"
end

and now it is working.