Setup omniauth login with sample 'developer' provider

LBHackney-IT · Jul 6, 2018 · 0284c68 · 0284c68
1 parent e4e2fb5
commit 0284c68
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diff --git a/Gemfile b/Gemfile
@@ -37,6 +37,7 @@ gem 'jbuilder', '~> 2.5'
 gem 'bootsnap', '>= 1.1.0', require: false
 
 gem 'rspec-rails'
+gem 'omniauth'
 
 group :development, :test do
   # Call 'byebug' anywhere in the code to stop execution and get a debugger console

diff --git a/Gemfile.lock b/Gemfile.lock
@@ -79,6 +79,7 @@ GEM
     ffi (1.9.25)
     globalid (0.4.1)
       activesupport (>= 4.2.0)
+    hashie (3.5.7)
     i18n (1.0.1)
       concurrent-ruby (~> 1.0)
     io-like (0.3.0)
@@ -106,6 +107,9 @@ GEM
     nio4r (2.3.1)
     nokogiri (1.8.3)
       mini_portile2 (~> 2.3.0)
+    omniauth (1.8.1)
+      hashie (>= 3.4.6, < 3.6.0)
+      rack (>= 1.6.2, < 3)
     pg (1.0.0)
     public_suffix (3.0.2)
     puma (3.11.4)
@@ -217,6 +221,7 @@ DEPENDENCIES
   coffee-rails (~> 4.2)
   jbuilder (~> 2.5)
   listen (>= 3.0.5, < 3.2)
+  omniauth
   pg (>= 0.18, < 2.0)
   puma (~> 3.11)
   rails (~> 5.2.0)

diff --git a/app/controllers/application_controller.rb b/app/controllers/application_controller.rb
@@ -1,2 +1,7 @@
 class ApplicationController < ActionController::Base
+  helper_method :user_signed_in?
+
+  def user_signed_in?
+    session[:current_user].present?
+  end
 end
diff --git a/app/controllers/sessions_controller.rb b/app/controllers/sessions_controller.rb
@@ -0,0 +1,18 @@
+class SessionsController < ApplicationController
+  skip_before_action :verify_authenticity_token, only: :create
+
+  def create
+    session[:current_user] = {
+      name: auth_hash.info.name,
+      email: auth_hash.info.email
+    }
+
+    redirect_to root_path
+  end
+
+  protected
+
+  def auth_hash
+    request.env['omniauth.auth']
+  end
+end
diff --git a/app/views/layouts/application.html.erb b/app/views/layouts/application.html.erb
@@ -10,6 +10,14 @@
   </head>
 
   <body>
+    <p>
+      <% if user_signed_in? %>
+        You are logged in as <%= session[:current_user]['name'] %>
+      <% else %>
+        <%= link_to 'Login (developer)', '/auth/developer' %>
+      <% end %>
+    </p>
+
     <%= yield %>
   </body>
 </html>
diff --git a/config/initializers/omniauth.rb b/config/initializers/omniauth.rb
@@ -0,0 +1,5 @@
+OmniAuth.config.logger = Rails.logger
+
+Rails.application.config.middleware.use OmniAuth::Builder do
+  provider :developer
+end
diff --git a/config/routes.rb b/config/routes.rb
@@ -2,4 +2,6 @@
   resources :stuffs
 
   root 'stuffs#index'
+
+  post '/auth/:provider/callback', to: 'sessions#create'
 end