Rails 4 - Uninitialized constant Mongo Model

I am attempting to setup MongoHQ using Heroku and rails 4. I have everything setup correctly to my knowledge, but I'm now getting this error:

uninitialized constant Job::TempEmailContactStoreCsv

This is the Job model where error is happening:

class Job < ActiveRecord::Base
  belongs_to :user

  def store_email_contact_csv(file)
    contact_array = csv_to_array(file)
    TempEmailContactStoreCsv.create(email_contact_array: contact_array, job_id: id)
  end

end

And my mongo model:

class TempEmailContactStoreCsv
  include Mongoid::Document

  field :email_contact_array, type: Array
  field :job_id

  def self.store(job_id, email_contact_array)
    r = TempEmailContactStoreCsv.find_by(job_id: job_id)
    if (r.nil?)
      TempEmailContactStoreCsv.create!(job_id: job_id, email_contact_array: email_contact_array)
    end
  end

  def self.exists?(job_id)
    r = TempEmailContactStoreCsv.find_by(job_id: job_id)
    return r.nil? == false
  end

  def self.retrieve(job_id)
    return TempEmailContactStoreCsv.find_by(job_id: job_id)
  end

  def self.delete(job_id)
    r = TempEmailContactStoreCsv.find_by(job_id: job_id)
    r.destroy unless r.nil?
  end

end

So it seems that my mongo model is not being initialized, and the namespacing seems weird to me also.

Any thoughts as to what is causing this error and how to fix it?

For rails to load a class automatically, the file must be within rails load path (which includes app/models so you are fine there) and the file name should be the camelcased version of the class name.

In your case the file name should be temp_email_contact_store_csv.rb not temp_email_store_csv.rb