Add authlogic gem and configure people and person_sessions.

This doesn't work.

Gemfile

@@ -40,3 +40,5 @@ gem 'spring',        group: :development
 
 # required for travis
 gem 'rake', group: [:test]
+
+gem 'authlogic', '>= 3.4.0'

Gemfile.lock

@@ -28,6 +28,10 @@ GEM
       thread_safe (~> 0.1)
       tzinfo (~> 1.1)
     arel (5.0.1.20140414130214)
+    authlogic (3.4.2)
+      activerecord (>= 3.2)
+      activesupport (>= 3.2)
+      request_store (~> 1.0)
     builder (3.2.2)
     coffee-rails (4.0.1)
       coffee-script (>= 2.2.0)
@@ -75,6 +79,7 @@ GEM
     rake (10.3.2)
     rdoc (4.1.1)
       json (~> 1.4)
+    request_store (1.0.7)
     sass (3.2.19)
     sass-rails (4.0.3)
       railties (>= 4.0.0, < 5.0)
@@ -113,6 +118,7 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
+  authlogic (>= 3.4.0)
   coffee-rails (~> 4.0.0)
   jbuilder (~> 2.0)
   jquery-rails

app/assets/javascripts/person_sessions.js.coffee

@@ -0,0 +1,3 @@
+# Place all the behaviors and hooks related to the matching controller here.
+# All this logic will automatically be available in application.js.
+# You can use CoffeeScript in this file: http://coffeescript.org/

app/assets/stylesheets/person_sessions.css.scss

@@ -0,0 +1,3 @@
+// Place all the styles related to the person_sessions controller here.
+// They will automatically be included in application.css.
+// You can use Sass (SCSS) here: http://sass-lang.com/

app/controllers/application_controller.rb

@@ -2,4 +2,45 @@ class ApplicationController < ActionController::Base
   # Prevent CSRF attacks by raising an exception.
   # For APIs, you may want to use :null_session instead.
   protect_from_forgery with: :exception
+
+  # handle current user and session for the view
+  helper_method :current_person_session, :current_person
+
+  private
+    def current_person_session
+      return @current_person_session if defined?(@current_person_session)
+      @current_person_session = PersonSession.find
+    end
+
+    def current_person
+      return @current_person if defined?(@current_person)
+      @current_person = current_person_session && current_person_session.user
+    end
+
+    def require_person
+      unless current_person
+        store_location
+        flash[:notice] = "You must be logged in to access this page"
+        redirect_to login_path
+        return false
+      end
+    end
+
+    def require_no_person
+      if current_person
+        store_location
+        flash[:notice] = "You cannot access this page while logged in to another account"
+        redirect_to root_url
+        return false
+      end
+    end
+
+    def store_location
+      session[:return_to] = request.request_uri
+    end
+
+    def redirect_back_or_default(default)
+      redirect_to(session[:return_to] || default)
+      session[:return_to] = nil
+    end
 end

app/controllers/people_controller.rb

@@ -1,4 +1,7 @@
 class PeopleController < ApplicationController
+  before_filter :require_no_person, :only => [:new, :create]
+  before_filter :require_person, :only => [:show, :edit, :update]
+
   def new
   end
 

app/controllers/person_sessions_controller.rb

@@ -0,0 +1,24 @@
+class PersonSessionsController < ApplicationController
+  before_filter :require_no_person, :only => [:new, :create]
+  before_filter :require_person, :only => :destroy
+
+  def new
+    @user_session = PersonSession.new
+  end
+
+  def create
+    @user_session = PersonSession.new(params[:person_session])
+    if @user_session.save
+      flash[:notice] = "Login successful!"
+      redirect_back_or_default account_url
+    else
+      render :action => :new
+    end
+  end
+
+  def destroy
+    current_person_session.destroy
+    flash[:notice] = "Logout successful!"
+    redirect_back_or_default new_person_session_url
+  end
+end

app/helpers/person_sessions_helper.rb

@@ -0,0 +1,2 @@
+module PersonSessionsHelper
+end

app/models/person.rb

@@ -1,2 +1,5 @@
 class Person < ActiveRecord::Base
+  acts_as_authentic do |c|
+    # add config here
+  end
 end

app/models/person_session.rb

@@ -0,0 +1,2 @@
+class PersonSession < Authlogic::Session::Base
+end

config/initializers/filter_parameter_logging.rb

@@ -1,4 +1,4 @@
 # Be sure to restart your server when you modify this file.
 
 # Configure sensitive parameters which will be filtered from the log file.
-Rails.application.config.filter_parameters += [:password]
+Rails.application.config.filter_parameters += [:password, :password_confirmation]

config/routes.rb

@@ -17,6 +17,7 @@
   #   resources :products
 
   resources :people
+  resources :user_session
 
   # Example resource route with options:
   #   resources :products do

db/migrate/20140727070204_create_user_sessions.rb

@@ -0,0 +1,13 @@
+class CreateUserSessions < ActiveRecord::Migration
+  def change
+    create_table :user_sessions do |t|
+      t.string :session_id, :null => false
+      t.text :data
+
+      t.timestamps
+    end
+
+    add_index :user_sessions, :session_id
+    add_index :user_sessions, :updated_at
+  end
+end

db/migrate/20140727071221_add_user_to_people.rb

@@ -0,0 +1,17 @@
+class AddUserToPeople < ActiveRecord::Migration
+  def change
+    add_column :people, :login, :string
+    add_index :people, :login
+    add_column :people, :crypted_password, :string
+    add_column :people, :password_salt, :string
+    add_column :people, :persistence_token, :string
+    add_index :people, :persistence_token
+    add_column :people, :login_count, :integer
+    add_column :people, :last_request_at, :datetime
+    add_index :people, :last_request_at
+    add_column :people, :last_login_at, :datetime
+    add_column :people, :current_login_at, :datetime
+    add_column :people, :last_login_ip, :string
+    add_column :people, :current_login_ip, :string
+  end
+end

db/migrate/20140727075101_rename_user_sessions_to_person_sessions.rb

@@ -0,0 +1,5 @@
+class RenameUserSessionsToPersonSessions < ActiveRecord::Migration
+  def change
+    rename_table :user_sessions, :person_sessions
+  end
+end

db/schema.rb

@@ -11,12 +11,36 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20140726092933) do
+ActiveRecord::Schema.define(version: 20140727075101) do
 
   create_table "people", force: true do |t|
     t.string   "name"
     t.datetime "created_at"
     t.datetime "updated_at"
+    t.string   "login"
+    t.string   "crypted_password"
+    t.string   "password_salt"
+    t.string   "persistence_token"
+    t.integer  "login_count"
+    t.datetime "last_request_at"
+    t.datetime "last_login_at"
+    t.datetime "current_login_at"
+    t.string   "last_login_ip"
+    t.string   "current_login_ip"
   end
 
+  add_index "people", ["last_request_at"], name: "index_people_on_last_request_at"
+  add_index "people", ["login"], name: "index_people_on_login"
+  add_index "people", ["persistence_token"], name: "index_people_on_persistence_token"
+
+  create_table "person_sessions", force: true do |t|
+    t.string   "session_id", null: false
+    t.text     "data"
+    t.datetime "created_at"
+    t.datetime "updated_at"
+  end
+
+  add_index "person_sessions", ["session_id"], name: "index_person_sessions_on_session_id"
+  add_index "person_sessions", ["updated_at"], name: "index_person_sessions_on_updated_at"
+
 end

test/controllers/person_sessions_controller_test.rb

@@ -0,0 +1,7 @@
+require 'test_helper'
+
+class PersonSessionsControllerTest < ActionController::TestCase
+  # test "the truth" do
+  #   assert true
+  # end
+end

test/fixtures/person_sessions.yml

@@ -0,0 +1,11 @@
+# Read about fixtures at http://api.rubyonrails.org/classes/ActiveRecord/FixtureSet.html
+
+# This model initially had no columns defined.  If you add columns to the
+# model remove the '{}' from the fixture names and add the columns immediately
+# below each fixture, per the syntax in the comments below
+#
+one: {}
+# column: value
+#
+two: {}
+#  column: value

test/helpers/person_sessions_helper_test.rb

@@ -0,0 +1,4 @@
+require 'test_helper'
+
+class PersonSessionsHelperTest < ActionView::TestCase
+end

test/models/person_session_test.rb

@@ -0,0 +1,7 @@
+require 'test_helper'
+
+class PersonSessionTest < ActiveSupport::TestCase
+  # test "the truth" do
+  #   assert true
+  # end
+end