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学生向けにプログラミングを解説。Java、C++、Ruby、PHP、データベース、Ruby on Rails

Ruby on Rails6.0 | 空き部屋を登録・予約・決済できるWebサイトを作成する 26 | Facebook認証

[25]Googleマップ<< [ホームに戻る] >> [27]Google認証


まずはFacebook for Developersでアカウントを作成しなければなりません。
developers.facebook.com


アカウント、アプリの作成は以下の手順でお願いします。
mrradiology.hatenablog.jp


GemFileに以下の記述を追加します。


記述追加 GemFile(76行目)

gem 'omniauth', '= 1.9.0'
gem 'omniauth-facebook', '= 5.0.0'



GemFile

source 'https://rubygems.org'
git_source(:github) { |repo| "https://github.com/#{repo}.git" }

ruby '2.6.6'

# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
gem 'rails', '~> 6.0.3'
# Use postgresql as the database for Active Record
gem 'pg', '>= 0.18', '< 2.0'
# Use Puma as the app server
gem 'puma', '~> 4.1'
# Use SCSS for stylesheets
gem 'sass-rails', '>= 6'
# Transpile app-like JavaScript. Read more: https://github.com/rails/webpacker
gem 'webpacker', '~> 4.0'
# Turbolinks makes navigating your web application faster. Read more: https://github.com/turbolinks/turbolinks
gem 'turbolinks', '~> 5'
# Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
gem 'jbuilder', '~> 2.7'
# Use Redis adapter to run Action Cable in production
# gem 'redis', '~> 4.0'
# Use Active Model has_secure_password
# gem 'bcrypt', '~> 3.1.7'

# Use Active Storage variant
# gem 'image_processing', '~> 1.2'

# Reduces boot times through caching; required in config/boot.rb
gem 'bootsnap', '>= 1.4.2', require: false

group :development, :test do
  # Call 'byebug' anywhere in the code to stop execution and get a debugger console
  gem 'byebug', platforms: [:mri, :mingw, :x64_mingw]
end

group :development do
  # Access an interactive console on exception pages or by calling 'console' anywhere in the code.
  gem 'web-console', '>= 3.3.0'
  gem 'listen', '~> 3.2'
  # Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring
  gem 'spring'
  gem 'spring-watcher-listen', '~> 2.0.0'
end

group :test do
  # Adds support for Capybara system testing and selenium driver
  gem 'capybara', '>= 2.15'
  gem 'selenium-webdriver'
  # Easy installation and use of web drivers to run system tests with browsers
  gem 'webdrivers'
end

# Windows does not include zoneinfo files, so bundle the tzinfo-data gem
gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]

# Bulma
gem 'bulma-rails', '~> 0.7.4'
gem 'bulma-extensions-rails', '~> 1.0.30'

# デバイス
gem 'devise'

# 日本語化
gem 'rails-i18n'

# アマゾンS3
gem "aws-sdk"

# アクションテキスト画像表示
gem "mini_magick"
gem 'image_processing', '~> 1.2'

#googleマップ
gem 'geocoder', '~> 1.4'

# facebook認証
gem 'omniauth', '= 1.9.0'
gem 'omniauth-facebook', '= 5.0.0'



コマンド
bundle


ユーザテーブルにプロバイダー認証のカラムを追加します。


コマンド(2つ)
rails g migration AddFacebookColumsToUser provider uid


rails db:migrate


「config\initializers\devise.rb」に以下の記述を追加します。


記述追加 config\initializers\devise.rb(312行目)
「アプリID」と「app secret」はご自分のものを入れて下さい。

  # アプリIDとシークレットはご自分のものを入れてください。
  config.omniauth :facebook, "ご自分のアプリID", "ご自分のシークレット", 
                   scope: 'email', 
                   info_fields: 'email,name',
                   image_size: 'large'



config\initializers\devise.rb

# frozen_string_literal: true

# Assuming you have not yet modified this file, each configuration option below
# is set to its default value. Note that some are commented out while others
# are not: uncommented lines are intended to protect your configuration from
# breaking changes in upgrades (i.e., in the event that future versions of
# Devise change the default values for those options).
#
# Use this hook to configure devise mailer, warden hooks and so forth.
# Many of these configuration options can be set straight in your model.
Devise.setup do |config|
  # The secret key used by Devise. Devise uses this key to generate
  # random tokens. Changing this key will render invalid all existing
  # confirmation, reset password and unlock tokens in the database.
  # Devise will use the `secret_key_base` as its `secret_key`
  # by default. You can change it below and use your own secret key.
  # config.secret_key = '32204ae839654bd9f63a7990f6c7ba06ae608a6855c9c1092e9c94852a964df00dcb8865ba401f988ba8c68b47468e04f876b679a8d8a9b917aa70e973e61943'

  # ==> Controller configuration
  # Configure the parent class to the devise controllers.
  # config.parent_controller = 'DeviseController'

  # ==> Mailer Configuration
  # Configure the e-mail address which will be shown in Devise::Mailer,
  # note that it will be overwritten if you use your own mailer class
  # with default "from" parameter.
  config.mailer_sender = 'win.rails.learn@gmail.com'

  # Configure the class responsible to send e-mails.
  # config.mailer = 'Devise::Mailer'

  # Configure the parent class responsible to send e-mails.
  # config.parent_mailer = 'ActionMailer::Base'

  # ==> ORM configuration
  # Load and configure the ORM. Supports :active_record (default) and
  # :mongoid (bson_ext recommended) by default. Other ORMs may be
  # available as additional gems.
  require 'devise/orm/active_record'

  # ==> Configuration for any authentication mechanism
  # Configure which keys are used when authenticating a user. The default is
  # just :email. You can configure it to use [:username, :subdomain], so for
  # authenticating a user, both parameters are required. Remember that those
  # parameters are used only when authenticating and not when retrieving from
  # session. If you need permissions, you should implement that in a before filter.
  # You can also supply a hash where the value is a boolean determining whether
  # or not authentication should be aborted when the value is not present.
  # config.authentication_keys = [:email]

  # Configure parameters from the request object used for authentication. Each entry
  # given should be a request method and it will automatically be passed to the
  # find_for_authentication method and considered in your model lookup. For instance,
  # if you set :request_keys to [:subdomain], :subdomain will be used on authentication.
  # The same considerations mentioned for authentication_keys also apply to request_keys.
  # config.request_keys = []

  # Configure which authentication keys should be case-insensitive.
  # These keys will be downcased upon creating or modifying a user and when used
  # to authenticate or find a user. Default is :email.
  config.case_insensitive_keys = [:email]

  # Configure which authentication keys should have whitespace stripped.
  # These keys will have whitespace before and after removed upon creating or
  # modifying a user and when used to authenticate or find a user. Default is :email.
  config.strip_whitespace_keys = [:email]

  # Tell if authentication through request.params is enabled. True by default.
  # It can be set to an array that will enable params authentication only for the
  # given strategies, for example, `config.params_authenticatable = [:database]` will
  # enable it only for database (email + password) authentication.
  # config.params_authenticatable = true

  # Tell if authentication through HTTP Auth is enabled. False by default.
  # It can be set to an array that will enable http authentication only for the
  # given strategies, for example, `config.http_authenticatable = [:database]` will
  # enable it only for database authentication.
  # For API-only applications to support authentication "out-of-the-box", you will likely want to
  # enable this with :database unless you are using a custom strategy.
  # The supported strategies are:
  # :database      = Support basic authentication with authentication key + password
  # config.http_authenticatable = false

  # If 401 status code should be returned for AJAX requests. True by default.
  # config.http_authenticatable_on_xhr = true

  # The realm used in Http Basic Authentication. 'Application' by default.
  # config.http_authentication_realm = 'Application'

  # It will change confirmation, password recovery and other workflows
  # to behave the same regardless if the e-mail provided was right or wrong.
  # Does not affect registerable.
  # config.paranoid = true

  # By default Devise will store the user in session. You can skip storage for
  # particular strategies by setting this option.
  # Notice that if you are skipping storage for all authentication paths, you
  # may want to disable generating routes to Devise's sessions controller by
  # passing skip: :sessions to `devise_for` in your config/routes.rb
  config.skip_session_storage = [:http_auth]

  # By default, Devise cleans up the CSRF token on authentication to
  # avoid CSRF token fixation attacks. This means that, when using AJAX
  # requests for sign in and sign up, you need to get a new CSRF token
  # from the server. You can disable this option at your own risk.
  # config.clean_up_csrf_token_on_authentication = true

  # When false, Devise will not attempt to reload routes on eager load.
  # This can reduce the time taken to boot the app but if your application
  # requires the Devise mappings to be loaded during boot time the application
  # won't boot properly.
  # config.reload_routes = true

  # ==> Configuration for :database_authenticatable
  # For bcrypt, this is the cost for hashing the password and defaults to 12. If
  # using other algorithms, it sets how many times you want the password to be hashed.
  # The number of stretches used for generating the hashed password are stored
  # with the hashed password. This allows you to change the stretches without
  # invalidating existing passwords.
  #
  # Limiting the stretches to just one in testing will increase the performance of
  # your test suite dramatically. However, it is STRONGLY RECOMMENDED to not use
  # a value less than 10 in other environments. Note that, for bcrypt (the default
  # algorithm), the cost increases exponentially with the number of stretches (e.g.
  # a value of 20 is already extremely slow: approx. 60 seconds for 1 calculation).
  config.stretches = Rails.env.test? ? 1 : 12

  # Set up a pepper to generate the hashed password.
  # config.pepper = 'e5ed481f9edff1111c47541d16cacaf5cfcca3a033dbb4e53df12ca0fc50094dcd77c1328e849b14ff5cd9a6723ccde0dc353a5dbcfd59f791ca72410c238556'

  # Send a notification to the original email when the user's email is changed.
  # config.send_email_changed_notification = false

  # Send a notification email when the user's password is changed.
  # config.send_password_change_notification = false

  # ==> Configuration for :confirmable
  # A period that the user is allowed to access the website even without
  # confirming their account. For instance, if set to 2.days, the user will be
  # able to access the website for two days without confirming their account,
  # access will be blocked just in the third day.
  # You can also set it to nil, which will allow the user to access the website
  # without confirming their account.
  # Default is 0.days, meaning the user cannot access the website without
  # confirming their account.
  # config.allow_unconfirmed_access_for = 2.days

  # A period that the user is allowed to confirm their account before their
  # token becomes invalid. For example, if set to 3.days, the user can confirm
  # their account within 3 days after the mail was sent, but on the fourth day
  # their account can't be confirmed with the token any more.
  # Default is nil, meaning there is no restriction on how long a user can take
  # before confirming their account.
  # config.confirm_within = 3.days

  # If true, requires any email changes to be confirmed (exactly the same way as
  # initial account confirmation) to be applied. Requires additional unconfirmed_email
  # db field (see migrations). Until confirmed, new email is stored in
  # unconfirmed_email column, and copied to email column on successful confirmation.
  config.reconfirmable = false

  # Defines which key will be used when confirming an account
  # config.confirmation_keys = [:email]

  # ==> Configuration for :rememberable
  # The time the user will be remembered without asking for credentials again.
  # config.remember_for = 2.weeks

  # Invalidates all the remember me tokens when the user signs out.
  config.expire_all_remember_me_on_sign_out = true

  # If true, extends the user's remember period when remembered via cookie.
  # config.extend_remember_period = false

  # Options to be passed to the created cookie. For instance, you can set
  # secure: true in order to force SSL only cookies.
  # config.rememberable_options = {}

  # ==> Configuration for :validatable
  # Range for password length.
  config.password_length = 6..128

  # Email regex used to validate email formats. It simply asserts that
  # one (and only one) @ exists in the given string. This is mainly
  # to give user feedback and not to assert the e-mail validity.
  config.email_regexp = /\A[^@\s]+@[^@\s]+\z/

  # ==> Configuration for :timeoutable
  # The time you want to timeout the user session without activity. After this
  # time the user will be asked for credentials again. Default is 30 minutes.
  # config.timeout_in = 30.minutes

  # ==> Configuration for :lockable
  # Defines which strategy will be used to lock an account.
  # :failed_attempts = Locks an account after a number of failed attempts to sign in.
  # :none            = No lock strategy. You should handle locking by yourself.
  # config.lock_strategy = :failed_attempts

  # Defines which key will be used when locking and unlocking an account
  # config.unlock_keys = [:email]

  # Defines which strategy will be used to unlock an account.
  # :email = Sends an unlock link to the user email
  # :time  = Re-enables login after a certain amount of time (see :unlock_in below)
  # :both  = Enables both strategies
  # :none  = No unlock strategy. You should handle unlocking by yourself.
  # config.unlock_strategy = :both

  # Number of authentication tries before locking an account if lock_strategy
  # is failed attempts.
  # config.maximum_attempts = 20

  # Time interval to unlock the account if :time is enabled as unlock_strategy.
  # config.unlock_in = 1.hour

  # Warn on the last attempt before the account is locked.
  # config.last_attempt_warning = true

  # ==> Configuration for :recoverable
  #
  # Defines which key will be used when recovering the password for an account
  # config.reset_password_keys = [:email]

  # Time interval you can reset your password with a reset password key.
  # Don't put a too small interval or your users won't have the time to
  # change their passwords.
  config.reset_password_within = 6.hours

  # When set to false, does not sign a user in automatically after their password is
  # reset. Defaults to true, so a user is signed in automatically after a reset.
  # config.sign_in_after_reset_password = true

  # ==> Configuration for :encryptable
  # Allow you to use another hashing or encryption algorithm besides bcrypt (default).
  # You can use :sha1, :sha512 or algorithms from others authentication tools as
  # :clearance_sha1, :authlogic_sha512 (then you should set stretches above to 20
  # for default behavior) and :restful_authentication_sha1 (then you should set
  # stretches to 10, and copy REST_AUTH_SITE_KEY to pepper).
  #
  # Require the `devise-encryptable` gem when using anything other than bcrypt
  # config.encryptor = :sha512

  # ==> Scopes configuration
  # Turn scoped views on. Before rendering "sessions/new", it will first check for
  # "users/sessions/new". It's turned off by default because it's slower if you
  # are using only default views.
  # config.scoped_views = false

  # Configure the default scope given to Warden. By default it's the first
  # devise role declared in your routes (usually :user).
  # config.default_scope = :user

  # Set this configuration to false if you want /users/sign_out to sign out
  # only the current scope. By default, Devise signs out all scopes.
  # config.sign_out_all_scopes = true

  # ==> Navigation configuration
  # Lists the formats that should be treated as navigational. Formats like
  # :html, should redirect to the sign in page when the user does not have
  # access, but formats like :xml or :json, should return 401.
  #
  # If you have any extra navigational formats, like :iphone or :mobile, you
  # should add them to the navigational formats lists.
  #
  # The "*/*" below is required to match Internet Explorer requests.
  # config.navigational_formats = ['*/*', :html]

  # The default HTTP method used to sign out a resource. Default is :delete.
  config.sign_out_via = :delete

  # ==> OmniAuth
  # Add a new OmniAuth provider. Check the wiki for more information on setting
  # up on your models and hooks.
  # config.omniauth :github, 'APP_ID', 'APP_SECRET', scope: 'user,public_repo'

  # ==> Warden configuration
  # If you want to use other strategies, that are not supported by Devise, or
  # change the failure app, you can configure them inside the config.warden block.
  #
  # config.warden do |manager|
  #   manager.intercept_401 = false
  #   manager.default_strategies(scope: :user).unshift :some_external_strategy
  # end

  # ==> Mountable engine configurations
  # When using Devise inside an engine, let's call it `MyEngine`, and this engine
  # is mountable, there are some extra configurations to be taken into account.
  # The following options are available, assuming the engine is mounted as:
  #
  #     mount MyEngine, at: '/my_engine'
  #
  # The router that invoked `devise_for`, in the example above, would be:
  # config.router_name = :my_engine
  #
  # When using OmniAuth, Devise cannot automatically set OmniAuth path,
  # so you need to do it manually. For the users scope, it would be:
  # config.omniauth_path_prefix = '/my_engine/users/auth'

  # ==> Turbolinks configuration
  # If your app is using Turbolinks, Turbolinks::Controller needs to be included to make redirection work correctly:
  #
  # ActiveSupport.on_load(:devise_failure_app) do
  #   include Turbolinks::Controller
  # end

  # ==> Configuration for :registerable

  # When set to false, does not sign a user in automatically after their password is
  # changed. Defaults to true, so a user is signed in automatically after changing a password.
  # config.sign_in_after_change_password = true

  # アプリIDとシークレットはご自分のものを入れてください。
  config.omniauth :facebook, "ご自分のアプリID", "ご自分のシークレット", 
                   scope: 'email', 
                   info_fields: 'email,name',
                   image_size: 'large'

end



「app\models\user.rb」ファイルに以下の記述を追加します。


記述追加 app\models\user.rb(12行目)

  def self.from_omniauth(auth)
    user = User.where(email: auth.info.email).first

    if user
      return user
    else
      where(provider: auth.provider, uid: auth.uid).first_or_create do |user|
        user.email = auth.info.email
        user.password = Devise.friendly_token[0, 20]
        user.full_name = auth.info.name   # ユーザーモデルに名前があると仮定
        user.image = auth.info.image # ユーザーモデルに画像があると仮定

        user.uid = auth.uid
        user.provider = auth.provider

      end
    end
  end



記述追加 app\models\user.rb
9行目に「, :omniauthable」の記述も追加しています。
カンマを忘れないようにして下さい。
コードをコピーしてファイルを置き換えてください。

class User < ApplicationRecord

  has_many :rooms

  has_one_attached :avatar

  # Include default devise modules. Others available are:
  # :confirmable, :lockable, :timeoutable, :trackable and :omniauthable
  devise :database_authenticatable, :registerable,
         :recoverable, :rememberable, :validatable,
         :confirmable, :omniauthable
  validates :full_name, presence: true, length: {maximum: 50}      

  def self.from_omniauth(auth)
    user = User.where(email: auth.info.email).first
    if user
      return user
    else
      where(provider: auth.provider, uid: auth.uid).first_or_create do |user|
        user.email = auth.info.email
        user.password = Devise.friendly_token[0, 20]
        user.full_name = auth.info.name   # ユーザーモデルに名前があると仮定
        user.image = auth.info.image # ユーザーモデルに画像があると仮定
        user.uid = auth.uid
        user.provider = auth.provider
      end
    end
  end
  
end



「app\controllers」フォルダに「omniauth_callbacks_controller.rb」ファイルを新規作成して下さい。


app\controllers\omniauth_callbacks_controller.rb(新規作成したファイル)

class OmniauthCallbacksController < Devise::OmniauthCallbacksController
    def facebook
 
      @user = User.from_omniauth(request.env["omniauth.auth"])
  
      if @user.persisted?
        sign_in_and_redirect @user, event: :authentication # @userがアクティブ化されていない場合
        set_flash_message(:notice, :success, kind: "Facebook") if is_navigational_format?
      else
        session["devise.facebook_data"] = request.env["omniauth.auth"]
        redirect_to new_user_registration_url
      end
    end
  
    def failure
      redirect_to root_path
    end
end



「Facebookでログイン」ボタンをつけます。


「app\views\devise\sessions\new.html.erb」ファイルに以下の記述を追加します。


記述追加 app\views\devise\sessions\new.html.erb(30行目)

<%= link_to "Facebookでログイン", user_facebook_omniauth_authorize_path, class: "button is-primary is-fullwidth" %>



app\views\devise\sessions\new.html.erb

<section class="hero is-dark is-fullheight">
  <div class="hero-body">
    <div class="container">
      <div class="columns is-centered">
        <div class="column is-6-table is-6-desktop is-6-widescreen">
          <div class="box">
            
            <div class="field has-text-centered">
              <strong>ログイン</strong>
            </div>
            <%= form_for(resource, as: resource_name, url: session_path(resource_name)) do |f| %>
              <div class="field">
                <%= f.label :メールアドレス, class: "label" %>
                <%= f.email_field :email, autofocus: true, autocomplete: "email", class: "input" %>
              </div>
              <div class="field">
                <%= f.label :パスワード, class: "label" %>
                <%= f.password_field :password, autocomplete: "current-password", class: "input" %>
              </div>
              <% if devise_mapping.rememberable? %>
                <div class="field">
                  <%= f.check_box :remember_me %>
                  <%= f.label :ログインを保持する %>
                </div>
              <% end %>
              <div class="field">
                <%= f.submit "ログインする", class: "button is-danger is-fullwidth m-t-10 m-b-10" %>
              </div>
            <% end %>
            <%= link_to "Facebookでログイン", user_facebook_omniauth_authorize_path, class: "button is-primary is-fullwidth" %>
            <%= render "devise/shared/links" %>
          </div>
        </div>
      </div>
    </div>
  </div>
</section>



「app\views\devise\registrations\new.html.erb」ファイルにも以下の記述を追加します。


記述追加 app\views\devise\registrations\new.html.erb(36行目)

<%= link_to "Facebookでユーザ登録", user_facebook_omniauth_authorize_path, class: "button is-primary is-fullwidth" %>



app\views\devise\registrations\new.html.erb

<section class="hero is-dark is-fullheight">
  <div class="hero-body">
    <div class="container">
      <div class="columns is-centered">
        <div class="column is-6-table is-6-desktop is-6-widescreen">
          <div class="box">
            
            <div class="field has-text-centered">
              <strong>新規ユーザ登録</strong>
            </div>
            <%= form_for(resource, as: resource_name, url: registration_path(resource_name)) do |f| %>
              <%= render "devise/shared/error_messages", resource: resource %>
              <div class="field">
                <%= f.label :氏名, class: "label" %>
                <%= f.text_field :full_name, autofocus: true, autocomplete: "full_name", class: "input" %>
              </div>
              <div class="field">
                <%= f.label :メールアドレス, class: "label" %>
                <%= f.email_field :email, autofocus: true, autocomplete: "email", class: "input" %>
              </div>
              <div class="field">
                <%= f.label :パスワード, class: "label" %>
                <% if @minimum_password_length %>
                <em>(<%= @minimum_password_length %> 文字以上)</em>
                <% end %><br />
                <%= f.password_field :password, autocomplete: "new-password", class: "input" %>
              </div>
              <div class="field">
                <%= f.label :確認, class: "label" %>
                <%= f.password_field :password_confirmation, autocomplete: "new-password", class: "input" %>
              </div>
              <div class="field">
                <%= f.submit "登録する", class: "button is-danger is-fullwidth m-t-10 m-b-10" %>
              </div>
            <% end %>
            <%= link_to "Facebookでユーザ登録", user_facebook_omniauth_authorize_path, class: "button is-primary is-fullwidth" %>
            <%= render "devise/shared/links" %>
          </div>
        </div>
      </div>
    </div>
  </div>
</section>



ルートを追加します。


「config\routes.rb」ファイルの記述を以下のように追加更新します。


追加更新 config\routes.rb(6行目)

  devise_for :users, 
              path: '', 
              path_names: {sign_up: 'register', sign_in: 'login', edit: 'profile', sign_out: 'logout'},
              controllers: {omniauth_callbacks: 'omniauth_callbacks', registrations: 'registrations'}



config\routes.rb

Rails.application.routes.draw do
  
  # ルートを app\views\pages\home.html.erb に設定
  root 'pages#home'
  
  devise_for :users, 
              path: '', 
              path_names: {sign_up: 'register', sign_in: 'login', edit: 'profile', sign_out: 'logout'},
              controllers: {omniauth_callbacks: 'omniauth_callbacks', registrations: 'registrations'}
  get 'pages/home'
  get '/dashboard', to: 'users#dashboard'
  get '/users/:id', to: 'users#show', as: 'user'
  
  post '/users/edit', to: 'users#update'
  resources :rooms, except: [:edit] do
    member do
      get 'listing'
      get 'pricing'
      get 'description'
      get 'photo_upload'
      get 'amenities'
      get 'location'
      delete :delete_photo
      post :upload_photo
    end
  end
  # For details on the DSL available within this file, see https://guides.rubyonrails.org/routing.html
end



ブラウザ確認
http://localhost:3000/register


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