smoothen registration process and first experience

app/controllers/application_controller.rb

@@ -34,7 +34,7 @@ class ApplicationController < ActionController::Base
     :authenticate_user!
 
     if (current_user.nil?)
-      redirect_to new_user_session_path
+      redirect_to new_user_registration_path
       return false
     end
 

app/controllers/confirmations_controller.rb

@@ -0,0 +1,40 @@
+class ConfirmationsController < Devise::ConfirmationsController
+  def show
+    self.resource = resource_class.confirm_by_token(params[:confirmation_token])
+    yield resource if block_given?
+
+    if Conference.all.count == 1 && Conference.first.registration_open?
+        @conference = Conference.first
+        @conference.registrations.create!(user_id: self.resource.id)
+        @redirection_path = register_conference_path(@conference.short_title)
+    end
+
+    sign_in resource if resource
+
+    if resource.errors.empty?
+      if @redirection_path.blank?
+        set_flash_message(:notice, :confirmed) if is_flashing_format?
+      else
+        set_flash_message(:notice, :confirmed_registered) if is_flashing_format?
+      end
+      respond_with_navigational(resource){ redirect_to after_confirmation_path_for(resource_name, resource) } and return
+    else
+      respond_with_navigational(resource.errors, status: :unprocessable_entity){ render :new } and return
+    end
+  end
+
+  private
+
+  def after_confirmation_path_for(resource_name, resource)
+
+    if @redirection_path.blank?
+      if signed_in?
+        signed_in_root_path(resource)
+      else
+        new_session_path(resource_name)
+      end
+    else
+      @redirection_path
+    end
+  end
+end

config/locales/devise.en.yml

@@ -34,6 +34,7 @@ en:
       send_instructions: 'You will receive an email with instructions about how to confirm your account in a few minutes.'
       send_paranoid_instructions: 'If your email address exists in our database, you will receive an email with instructions about how to confirm your account in a few minutes.'
       confirmed: 'Your account was successfully confirmed.  NOTE: You have not been automatically registered to attend a conference!'
+      confirmed_registered: 'Your account was successfully confirmed and you have been automatically registered to attend the conference. You can update or cancel your registration below.'
     registrations:
       signed_up: 'Welcome! You have signed up successfully.'
       signed_up_but_unconfirmed: 'A message with a confirmation link has been sent to your email address. Please open the link to activate your account.'

config/routes.rb

@@ -2,7 +2,7 @@ Osem::Application.routes.draw do
 
   get 'conference/show'
 
-  devise_for :users, controllers: { registrations: :registrations,
+  devise_for :users, controllers: { registrations: :registrations, confirmations: :confirmations,
                                     omniauth_callbacks: 'users/omniauth_callbacks' },
                      path: 'accounts'
 

spec/controllers/admin/conferences_controller_spec.rb

@@ -261,7 +261,7 @@ describe Admin::ConferenceController do
 
   describe 'guest access' do
 
-    it_behaves_like 'access as participant or guest', :new_user_session_path
+    it_behaves_like 'access as participant or guest', :new_user_registration_path
 
   end
 end