Default User model is not working unless you add mongoid_userstamp_user call

[marcocanderle]

I think this might be related with the other 2 issues you have open in this gem, but I had a long debugging session till I found out that unless you explicitly add the mongoid_userstamp_user call on the model where you want to use the userstamps, the gem won't be applied to the model if you just use:
include Mongoid::Userstamp
as the readme implies in the first example.

I'm using the gem in combination with https://github.com/aq1018/mongoid-history . I'm using the following gemset (short version):

gem 'rails', '4.1.8'
# Mongoid
gem 'mongoid', github: 'mongoid/mongoid'
gem 'mongoid_slug', github: 'digitalplaywright/mongoid-slug'
gem 'mongoid-history'
gem 'mongoid_userstamp'

# Users & Policies
gem 'devise', '~> 3.4.0'
gem 'devise-encryptable', '~> 0.2.0'  
gem 'devise_invitable', github: 'scambra/devise_invitable'
gem 'devise-scrypt'
gem 'pundit'
gem 'enumerize'
......

Using Ruby 2.1.4

My models (reduced version) are as follows:

#The model used for HistoryTracker gem
class HistoryTracker
   include Mongoid::History::Tracker
   include Mongoid::Userstamp

   mongoid_userstamp #Gem won't work unless I add this line explicitly
end

class User
  include Mongoid::Document
  include Mongoid::Userstamp::User
  include Mongoid::Attributes::Dynamic
  include Mongoid::Timestamps
  extend Enumerize

  has_and_belongs_to_many :accounts

  devise :invitable, :encryptable, :database_authenticatable, :registerable, :lockable,
     :recoverable, :confirmable, :rememberable, :trackable, :validatable, :timeoutable

end

class Model1
  include Mongoid::Document
  include Mongoid::Attributes::Dynamic
  include Mongoid::Timestamps
  include Mongoid::History::Trackable

  belongs_to :account

  track_history track_create: true
end

class Account
  include Mongoid::Document
  include Mongoid::Attributes::Dynamic
  include Mongoid::Timestamps
   include Mongoid::History::Trackable
  include Mongoid::Slug

  has_and_belongs_to_many :users

  track_history on: [:filing_frequency, :status] #log account changes

end

I think the issue is with the default call to mongoid_userstamp, which for some reason doesn't happen as expected.

[marcocanderle]

BTW, the error I get if I don't do what explained is:

    undefined method `updated_by' for #<HistoryTracker:0x007f7d9c5824d0>

[marcocanderle]

I edited my initial comments with the updated code with the general solution for using it with HistoryTracker. The mongoid_userstamp gem won't work and will issue the mentioned error unless I explicitly include mongoid_userstamp on the HistoryTracker model.

Note that without using HistoryTracker, I still had to include the mongoid_userstamp call to make it work properly.

[johnnyshields]

Can you reduce this down to a failing RSpec and commit it, so I can attempt to fix it?

[marcocanderle]

Just sent you the pull request but I would need your advice on how to solve that issue I mention on the pull request. thanks!