backtrace.txt

/home/chris/.rbenv/versions/1.9.3-p0/lib/ruby/gems/1.9.1/gems/dm-core-1.2.0/lib/dm-core/model/relationship.rb:372:in `method_missing'
/home/chris/.rbenv/versions/1.9.3-p0/lib/ruby/gems/1.9.1/gems/dm-core-1.2.0/lib/dm-core/model/property.rb:249:in `method_missing'
/home/chris/.rbenv/versions/1.9.3-p0/lib/ruby/gems/1.9.1/gems/activesupport-3.2.3/lib/active_support/dependencies.rb:514:in `load_missing_constant'
/home/chris/.rbenv/versions/1.9.3-p0/lib/ruby/gems/1.9.1/gems/activesupport-3.2.3/lib/active_support/dependencies.rb:192:in `block in const_missing'
/home/chris/.rbenv/versions/1.9.3-p0/lib/ruby/gems/1.9.1/gems/activesupport-3.2.3/lib/active_support/dependencies.rb:190:in `each'
/home/chris/.rbenv/versions/1.9.3-p0/lib/ruby/gems/1.9.1/gems/activesupport-3.2.3/lib/active_support/dependencies.rb:190:in `const_missing'
/home/chris/.rbenv/versions/1.9.3-p0/lib/ruby/gems/1.9.1/gems/dm-core-1.2.0/lib/dm-core/model.rb:728:in `const_missing'
/home/chris/.rbenv/versions/1.9.3-p0/lib/ruby/gems/1.9.1/gems/dm-core-1.2.0/lib/dm-core/property/lookup.rb:25:in `const_missing'
/home/chris/flippa/flippa-rails/app/models/payment_agreement/credit_card.rb:43:in `process_payment'

gistfile1.rb

class Post
  include DataMapper::Resource

  property :id, Serial

  def self.do_some_in_background
    all(:on_some_condition => true).each do |post|
      # The problem arises when ClassUnderJobs (from app/job/class_under_jobs.rb)
      # hasn't been expressly required. Usually Rails would auto-load it, but in
      # this context DataMapper catches the const_missing() first and an exception
      # is raised.
      Resque.enqueue(ClassUnderJobs, :post_id => post.id)
    end
  end
end


Post.do_something_in_background