invite: move invites link to the after_confirmation callback

Refactored from 6a69d958da

The `after_confirmation_path_for` isn't really made to be a callbback.
For instance, it is not executed during tests.

Moving the invitations linking to a proper documented callback allows
the linking to work in a testing environment, when invoking `user.confirm`.

app/controllers/users/confirmations_controller.rb

@@ -1,38 +0,0 @@
-# frozen_string_literal: true
-
-class Users::ConfirmationsController < Devise::ConfirmationsController
-  # GET /resource/confirmation/new
-  # def new
-  #   super
-  # end
-
-  # POST /resource/confirmation
-  # def create
-  #   super
-  # end
-
-  # GET /resource/confirmation?confirmation_token=abcdef
-  # def show
-  #   super
-  # end
-
-  protected
-
-  # The path used after resending confirmation instructions.
-  # def after_resending_confirmation_instructions_path_for(resource_name)
-  #   super(resource_name)
-  # end
-
-  # The path used after confirmation.
-  def after_confirmation_path_for(resource_name, resource)
-    check_invite!(resource)
-
-    super(resource_name, resource)
-  end
-
-  private
-
-  def check_invite!(user)
-    Invite.where(email: user.email).update_all user_id: user.id
-  end
-end

app/models/user.rb

@@ -24,6 +24,11 @@ class User < ApplicationRecord
 
   before_validation -> { sanitize_email(:email) }
 
+  # Callback provided by Devise
+  def after_confirmation
+    link_invites!
+  end
+
   def self.find_for_france_connect(email, siret)
     user = User.find_by(email: email)
     if user.nil?
@@ -49,4 +54,10 @@ class User < ApplicationRecord
   def owns_or_invite?(dossier)
     owns?(dossier) || invite?(dossier.id)
   end
+
+  private
+
+  def link_invites!
+    Invite.where(email: email).update_all(user_id: id)
+  end
 end

config/routes.rb

@@ -70,8 +70,7 @@ Rails.application.routes.draw do
   devise_for :users, controllers: {
     sessions: 'users/sessions',
     registrations: 'users/registrations',
-    passwords: 'users/passwords',
-    confirmations: 'users/confirmations'
+    passwords: 'users/passwords'
   }
 
   devise_scope :user do

spec/controllers/users/confirmations_controller_spec.rb

@@ -1,23 +0,0 @@
-describe Users::ConfirmationsController, type: :controller do
-  let(:email) { 'mail@beta.gouv.fr' }
-  let(:user) do
-    create(:user,
-      email: email,
-      password: 'a good password',
-      confirmation_token: '123',
-      confirmed_at: nil)
-  end
-
-  before { @request.env["devise.mapping"] = Devise.mappings[:user] }
-
-  describe '#check_invite!' do
-    let!(:invite) { create(:invite, email: email) }
-    let!(:invite2) { create(:invite, email: email) }
-
-    before { get :show, params: { confirmation_token: user.confirmation_token } }
-
-    it 'the new user is connect at his two invite' do
-      expect(User.last.invites.size).to eq(2)
-    end
-  end
-end

spec/models/user_spec.rb

@@ -1,6 +1,25 @@
 require 'spec_helper'
 
 describe User, type: :model do
+  describe '#after_confirmation' do
+    let(:email) { 'mail@beta.gouv.fr' }
+    let!(:invite)  { create(:invite, email: email) }
+    let!(:invite2) { create(:invite, email: email) }
+    let(:user) do
+      create(:user,
+        email: email,
+        password: 'a good password',
+        confirmation_token: '123',
+        confirmed_at: nil)
+    end
+
+    it 'when confirming a user, it links the pending invitations to this user' do
+      expect(user.invites.size).to eq(0)
+      user.confirm
+      expect(user.reload.invites.size).to eq(2)
+    end
+  end
+
   describe '#find_for_france_connect' do
     let(:siret) { '00000000000000' }
     context 'when user exist' do