NameError: uninitialized constant custom job file Rails 6

Question

I have a file app/jobs/foo_bar_job.rb with the following:

class FooBarJob < ApplicationJob
  queue_as :default

  def perform(*args)
    # Do stuff
  end
end

I run rails c to open up the rails console and I get the following when I type FooBarJob

NameError: uninitialized constant FooBarJob

My app doesn't know about the constant. I'm not sure what I am missing. I also attempted putting the following within config/application.rb but it didn't fix it either:

require_relative 'boot'
require 'rails/all'

Bundler.require(*Rails.groups)

module MyApp
  class Application < Rails::Application
    config.load_defaults 6.0
    # I added this line to attempt to load all files within /app/jobs
    config.autoload_paths += Dir[Rails.root.join('app', 'jobs', '{**}')]
  end
end

Answer 1

This turned out to be a very environment-specific issue. I'll post my fix, but it is still a mystery.

I am using vagrant to run a linux VM on my host machine, and on my host machine I am using rubymine.

The rails app lives within a shared directory between the host and vagrant vm.

For whatever reason: running rails c was not picking up the existence of that job file. Once I rebooted the vm: it worked as expected.