Don't receive callback with devise_invitable - ruby-on-rails

Question

I'm using devise_invitable to allow users to invite each other. I want to set values for the user when the invite is created or when it's accepted. One approach is here
Using devise_invitable for adding Users to a Group in Ruby on Rails?
but this seems overkill. The callbacks look like a perfect solution, but they don't seem to fire during my Rspec tests.
Here is the user model:
class User < ActiveRecord::Base
belongs_to :company
rolify
# Include default devise modules. Others available are:
# :token_authenticatable, :confirmable,
# :lockable, :timeoutable and :omniauthable
devise :invitable, :database_authenticatable, :registerable, :confirmable,
:recoverable, :rememberable, :trackable, :validatable
# Setup accessible (or protected) attributes for your model
attr_accessible :role_ids, :as => :admin
attr_accessible :name, :email, :password, :password_confirmation, :remember_me, :company
validates :company, :presence => true
after_invitation_accepted :email_invited_by
before_invitation_accepted :email_invited_by
private
def email_invited_by
# This is NEVER executed during tests, even when an invite is successfully accepted
puts "Callback worked"
end
end
Any clues about where to look would be appreciated. I find the devise_invitable documentation a bit opaque.
Thanks!

Answer 1

For those still looking for an answer here is what worked for me.
The issue is not with validations since in devise_invitable there is a config to validate on invite and it defaults to false:
# Flag that force a record to be valid before being actually invited
# Default: false
# config.validate_on_invite = true
So my solution is to use the callback provided by devise_invitable:
after_invitation_accepted :create_profile
Do note that this needs to be below devise :invitable

Answer 2

devise_invitable callbacks will be fired if the user has been really invited (i.e. the object is persisted and there's an invitation token set) and the object (user's object) has no validation errors. That said, I see that you're validating presence of company without any conditions, which, I think, could be causing validation errors.
If that's the case, you can add a condition like this
validates :company, :presence => true, :if => Proc.new { self.invitation_token.nil? }
so it won't cause validation errors and fire the callbacks.