SixArm.com → Ruby →
CurrentUser module with current_user methods

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

Introduction

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

When you set the current user, this does:

• @current_user = user
• @current_user_id = user.id
• session[:current_user_id] = user.id

For docs go to http://sixarm.com/sixarm_ruby_current_user/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

Gemfile

To add this gem to your Gemfile:

gem 'sixarm_ruby_current_user'

Require

To require the gem in your code:

require 'sixarm_ruby_current_user'

Example code

joe = User.find(123)
self.current_user = joe
=>
@current_user == joe
@current_user_id == 123
session[:current_user_id] == 123

Example controller

class MyController < ApplicationController

  def sign_in(user)
    self.current_user = user
  end

  def sign_out
    self.current_user = nil
  end

  def is_anyone_using_this?
    current_user?
  end

end

Example of reloading

For fast speed, we memoize current_user and current_user_id: we use fast instance variables @current_user and @current_user_id rather than reading the slower session[:current_user_id] each time.

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

current_user(: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 = joe

Wrong:

current_user = joe