User Controllers

app/assets/javascripts/home.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/javascripts/sessions.js.coffee

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+# 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/home.css.scss

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

app/assets/stylesheets/sessions.css.scss

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+// Place all the styles related to the 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

@@ -1,5 +1,8 @@
 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
+  helper_method :current_user
+
+  def current_user
+    @current_user ||= User.find(session[:user_id]) if session[:user_id]
+  end
 end

app/controllers/home_controller.rb

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+class HomeController < ApplicationController
+  def show
+  end
+end

app/controllers/sessions_controller.rb

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+class SessionsController < ApplicationController
+  def create
+    user = User.from_omniauth(env['omniauth.auth'])
+    session[:user_id] = user.id
+
+    redirect_to root_path
+  end
+
+  def destroy
+    session[:user_id] = nil
+
+    redirect_to root_path
+  end
+end

app/helpers/home_helper.rb

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+module HomeHelper
+end

app/helpers/sessions_helper.rb

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+module SessionsHelper
+end

app/views/home/show.html.erb

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+<h1>Home#show</h1>
+<p>Find me in app/views/home/show.html.erb</p>

app/views/sessions/create.html.erb

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+<h1>Sessions#create</h1>
+<p>Find me in app/views/sessions/create.html.erb</p>

app/views/sessions/destroy.html.erb

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+<h1>Sessions#destroy</h1>
+<p>Find me in app/views/sessions/destroy.html.erb</p>

config/routes.rb

@@ -1,56 +1,10 @@
 Rails.application.routes.draw do
-  # The priority is based upon order of creation: first created -> highest priority.
-  # See how all your routes lay out with "rake routes".
+  get 'auth/:provider/callback', to: 'sessions#create'
+  get 'auth/failure', to: redirect('/')
+  get 'logout', to: 'sessions#destroy', as: 'logout'
 
-  # You can have the root of your site routed with "root"
-  # root 'welcome#index'
+  resources :sessions, only: [ :create, :destroy ]
+  resources :home, only: [ :show ]
 
-  # Example of regular route:
-  #   get 'products/:id' => 'catalog#view'
-
-  # Example of named route that can be invoked with purchase_url(id: product.id)
-  #   get 'products/:id/purchase' => 'catalog#purchase', as: :purchase
-
-  # Example resource route (maps HTTP verbs to controller actions automatically):
-  #   resources :products
-
-  # Example resource route with options:
-  #   resources :products do
-  #     member do
-  #       get 'short'
-  #       post 'toggle'
-  #     end
-  #
-  #     collection do
-  #       get 'sold'
-  #     end
-  #   end
-
-  # Example resource route with sub-resources:
-  #   resources :products do
-  #     resources :comments, :sales
-  #     resource :seller
-  #   end
-
-  # Example resource route with more complex sub-resources:
-  #   resources :products do
-  #     resources :comments
-  #     resources :sales do
-  #       get 'recent', on: :collection
-  #     end
-  #   end
-
-  # Example resource route with concerns:
-  #   concern :toggleable do
-  #     post 'toggle'
-  #   end
-  #   resources :posts, concerns: :toggleable
-  #   resources :photos, concerns: :toggleable
-
-  # Example resource route within a namespace:
-  #   namespace :admin do
-  #     # Directs /admin/products/* to Admin::ProductsController
-  #     # (app/controllers/admin/products_controller.rb)
-  #     resources :products
-  #   end
+  root to: 'home#show'
 end

test/controllers/home_controller_test.rb

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+require 'test_helper'
+
+class HomeControllerTest < ActionController::TestCase
+  test "should get show" do
+    get :show
+    assert_response :success
+  end
+
+end

test/controllers/sessions_controller_test.rb

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+require 'test_helper'
+
+class SessionsControllerTest < ActionController::TestCase
+  test "should get create" do
+    get :create
+    assert_response :success
+  end
+
+  test "should get destroy" do
+    get :destroy
+    assert_response :success
+  end
+
+end

test/helpers/home_helper_test.rb

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+require 'test_helper'
+
+class HomeHelperTest < ActionView::TestCase
+end

test/helpers/sessions_helper_test.rb

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+require 'test_helper'
+
+class SessionsHelperTest < ActionView::TestCase
+end