SixArm.com → Ruby →
CurrentUserId module for Rails sessions

• Doc: http://sixarm.com/sixarm_ruby_current_user_id/doc
• Gem: http://rubygems.org/gems/sixarm_ruby_current_user_id
• Repo: http://github.com/sixarm/sixarm_ruby_current_user_id

Introduction

Get and set the current user id in the Rails session array.

When you set the current user id:

• this sets session[:current_user_id] to the id
• this sets @current_user_id to the id

For docs go to http://sixarm.com/sixarm_ruby_current_user_id/doc

Want to help? We're happy to get pull requests.

Install

Gem

To install this gem in your shell or terminal:

gem install sixarm_ruby_current_user_id

Gemfile

To add this gem to your Gemfile:

gem 'sixarm_ruby_current_user_id'

Require

To require the gem in your code:

require 'sixarm_ruby_current_user_id'

Example code

self.current_user_id = 1
#=> @current_user_id = session[:current_user_id] = 1

Example controller

class MyController < ApplicationController

  def sign_in(user)
    self.current_user_id = user.id
  end

  def sign_out
    self.current_user_id = nil
  end

  def is_anyone_using_this?
    current_user_id?
  end

end

Example of reloading

For fast speed, we memoize the current_user_id: we use the fast instance variable @current_user_id rather than the slower session[:current_user_id].

To reload @current_user_id from session[:current_user_id], we use the :reload parameter like this:

current_user_id(:reload => true)

Why use the self prefix?

When we set variables, we must use the "self" prefix because Ruby uses this to do method dispatch.

Right:

self.current_user_id = 1

Wrong:

current_user_id = 1