Confirm on Apache Passenger deployment: rails access session in model

Question

I am using this to access session in Model.

http://www.zorched.net/2007/05/29/making-session-data-available-to-models-in-ruby-on-rails/

Can anybody confirm

Answer 1

I did not find any code on the internet that works, so I did some research and wrote my own. It works for Rails 3.2.x and probably on some other versions.

Insert this in your ApplicationController

  # Set a filter that is invoked on every request
  before_filter :_set_current_session

  protected
  def _set_current_session
    # Define an accessor. The session is always in the current controller
    # instance in @_request.session. So we need a way to access this in
    # our model
    accessor = instance_variable_get(:@_request)

    # This defines a method session in ActiveRecord::Base. If your model
    # inherits from another Base Class (when using MongoMapper or similar),
    # insert the class here.
    ActiveRecord::Base.send(:define_method, "session", proc {accessor.session})
  end

I will not remind you that accessing your session from a model may lead to bad code. Other posts may tell you, that you are stupid. Though there are some valid reasons to access the session from your model, like implementing a Model.save method, that saves to the current users session.