Rails6.0 | 民泊予約サイトの構築 | 42 | クレジットカード決済 | Stripeコネクト - 学生向けプログラミング入門

[４１]クレジットカード決済 | Stripe（ストライプ）<<　[ホームに戻る]　>> [４３]クレジットカード決済の実装

お部屋を登録したホストに宿泊料金の８０％が自動で支払われるように設定します。
これにはStripeコネクトというサービスを使いますが、プランに「スタンダード」と「エクスプレス」があります。
「エクスプレス」の方がホストの登録や設定が楽なので「エクスプレス」で実装していきます。

「テスト環境のクライアント ID」の取得方法は下記の手順でお願いします。
mrradiology.hatenablog.jp

どんな画像でも良いので、「stripe_button.png」を「app\assets\images」フォルダにコピーしておいてください。

記述追加　GemFile（89行目）

gem 'omniauth-stripe-connect', '~> 2.10.0'

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'

# google認証
gem 'omniauth-google-oauth2'

# 検索
gem 'ransack', '~> 2.3'

# stripe
gem 'stripe', '=4.18.1'

# stripeコネクト
gem 'omniauth-stripe-connect', '~> 2.10.0'

コマンド
bundle

ユーザテーブルにStripeコネクトのIDを入れるカラムを作成します。

コマンド
rails g migration AddMerchantIdToUser merchant_id

コマンド　マイグレーション適用
rails db:migrate

「app\models\user.rb」ファイルを編集します。

記述追加　app\models\user.rb(18行目)

  def is_active_host
    !self.merchant_id.blank?
  end

app\models\user.rb

class User < ApplicationRecord

  has_many :rooms
  has_many :reservations
  has_many :guest_reviews, class_name: "GuestReview", foreign_key: "guest_id"
  has_many :host_reviews, class_name: "HostReview", foreign_key: "host_id"

  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 is_active_host
    !self.merchant_id.blank?
  end

  def self.from_omniauth(auth)
    user = User.where(email: auth.info.email).first
    if user
      if !user.provider
        user.update(uid: auth.uid, provider: auth.provider, image: auth.info.image)
      end      
      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

記述追加　config\initializers\devise.rb（325行目）
ご自分のテスト環境のクライアント IDとシークレットキーを入れて下さい。
シークレットキーはStripe APIキーのシークレットキーです。

  # stripeコネクト
  #　最初にテスト環境のクライアント ID（コネクトのID）　ca_
  # 次にシークレットキー　sk_test_
  config.omniauth :stripe_connect, 'ご自分のクライアントIDを入れてください', 'ご自分のシークレットキーを入れてください', scope: 'read_write', stripe_landing: 'login'

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を入れてください, "ご自分のシークレットを入れてください", 
                   scope: 'email', 
                   info_fields: 'email,name',
                   image_size: 'large'


  #クライアントID クライアントシークレット はご自分のものを入れてください。
  config.omniauth :google_oauth2,
    'ご自分のクライアントIDを入れてください',
    'ご自分のクライアントシークレットを入れてください',
    {access_type: "offline", approval_prompt: "", skip_jwt: true}                   

  # stripeコネクト
  #　最初にテスト環境のクライアント ID（コネクトのID）　ca_
  # 次にシークレットキー　sk_test_
  config.omniauth :stripe_connect,
 'ご自分のクライアントIDを入れてください',
 'ご自分のシークレットキーを入れてください',
 scope: 'read_write', stripe_landing: 'login'
  
end

記述追加　app\helpers\application_helper.rb(22行目)
「client_id=」と「&scope=read_write」の間にご自分のテスト環境のクライアント ID（コネクトのID）を入れて下さい。

    # テスト環境のクライアント ID(コネクトのID)　ca_
    def stripe_express_path
        "https://connect.stripe.com/express/oauth/authorize?response_type=code&client_id=ご自分のクライアントIDを入れてください&scope=read_write"
    end

app\helpers\application_helper.rb

module ApplicationHelper

    def avatar_url(user)
        if user.avatar.attached?
            url_for(user.avatar)
        elsif user.image?
            user.image
        else
            ActionController::Base.helpers.asset_path('icon_default_avatar.jpg')
        end
    end

    def room_cover(room)
        if room.photos.attached?
            url_for(room.photos[0])
        else
            ActionController::Base.helpers.asset_path('blank.jpg')
        end
    end

    # テスト環境のクライアント ID(コネクトのID)　ca_HZ3ThjQ
    def stripe_express_path
        "https://connect.stripe.com/express/oauth/authorize?response_type=code&client_id=ご自分のクライアントIDを入れてください&scope=read_write"
    end

end

記述追加　app\controllers\users_controller.rb(51行目)

  def payout
    if !current_user.merchant_id.blank?
      account = Stripe::Account.retrieve(current_user.merchant_id)
      @login_link = account.login_links.create()
    end
  end

app\controllers\users_controller.rb

class UsersController < ApplicationController

  before_action :authenticate_user!

  def dashboard
  end

  def show
    @user = User.find(params[:id])
    @rooms = @user.rooms

    # ユーザーがホストの場合、ホストに対するすべてのゲストレビューを表示
    @guest_reviews = Review.where(type: "GuestReview", host_id: @user.id)
    # ユーザーがゲストの場合、ユーザに対するすべてのホストレビューを表示
    @host_reviews = Review.where(type: "HostReview", guest_id: @user.id)    
  end

  def update
    @user = current_user
    if @user.update_attributes(current_user_params)
      flash[:notice] = "保存しました"
    else
      flash[:alert] = "更新できません"
    end
    redirect_to dashboard_path
  end

  def update_payment
    if !current_user.stripe_id
      customer = Stripe::Customer.create(
        email: current_user.email,
        source: params[:stripeToken]
      )
    else
      customer = Stripe::Customer.update(
        current_user.stripe_id,
        source: params[:stripeToken]
      )
    end
    if current_user.update(stripe_id: customer.id, stripe_last_4: customer.sources.data.first["last4"])
      flash[:notice] = "新しいカード情報が登録されました"
    else
      flash[:alert] = "無効なカードです"
    end
    redirect_to request.referrer
  rescue Stripe::CardError => e
    flash[:alert] = e.message
    redirect_to request.referrer
  end

  def payout
    if !current_user.merchant_id.blank?
      account = Stripe::Account.retrieve(current_user.merchant_id)
      @login_link = account.login_links.create()
    end
  end

  private

  def current_user_params
    params.require(:user).permit(:about, :status, :avatar)
  end
  
end

ルートの設定をします。

17行目に以下の記述を追加します。

get 'settings/payout', to: 'users#payout', as: 'settings_payout'

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'
  get '/your_trips' => 'reservations#your_trips'
  get '/your_reservations' => 'reservations#your_reservations'
  get 'search' => 'pages#search'
  get 'settings/payment', to: 'users#payment', as: 'settings_payment'
  get 'settings/payout', to: 'users#payout', as: 'settings_payout'
  
  post '/users/edit', to: 'users#update'
  post '/settings/payment', to: 'users#update_payment', as: "update_payment"
  
  resources :rooms, except: [:edit] do
    member do
      get 'listing'
      get 'pricing'
      get 'description'
      get 'photo_upload'
      get 'amenities'
      get 'location'
      get 'preload'
      get 'preview'
      delete :delete_photo
      post :upload_photo
    end
    resources :reservations, only: [:create]
  end

  resources :guest_reviews, only: [:create, :destroy]
  resources :host_reviews, only: [:create, :destroy]

  resources :reservations, only: [:approve, :decline] do
    member do
      post '/approve' => "reservations#approve"
      post '/decline' => "reservations#decline"
    end
  end  
  
  # For details on the DSL available within this file, see https://guides.rubyonrails.org/routing.html
end

「app/controllers/omniauth_callbacks_controller.rb」ファイルに以下の記述を追加します。（29行目）

    def stripe_connect
        auth_data = request.env["omniauth.auth"]
        @user = current_user

        if @user.persisted?
        @user.merchant_id = auth_data.uid
        @user.save

        if !@user.merchant_id.blank?

            # 支払いスケジュールを更新する
            account = Stripe::Account.retrieve(current_user.merchant_id)
            # 決算の15日後にお支払い  
            account.settings.payouts.schedule.delay_days = 15

            account.save

            logger.debug "#{account}"
        end

        sign_in_and_redirect @user, event: :authentication
        flash[:notice] = "ストライプアカウントを作成し接続しました。" if is_navigational_format?

        else
        session["devise.stripe_connect_data"] = request.env["omniauth.auth"]
        redirect_to dashboard_path
        end
    end

app\controllers\omniauth_callbacks_controller.rb

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 google_oauth2
      # 以下のメソッドをモデルに実装する必要があります（app/models/user.rb）
      @user = User.from_omniauth(request.env['omniauth.auth'])
  
      if @user.persisted?
        flash[:notice] = I18n.t 'devise.omniauth_callbacks.success', kind: 'Google'
        sign_in_and_redirect @user, event: :authentication
      else
        session['devise.google_data'] = request.env['omniauth.auth'].except(:extra)
        redirect_to new_user_registration_url, alert: @user.errors.full_messages.join("\n")
      end
    end

    def stripe_connect
      auth_data = request.env["omniauth.auth"]
      @user = current_user

      if @user.persisted?
        @user.merchant_id = auth_data.uid
        @user.save

        if !@user.merchant_id.blank?

          # 支払いスケジュールを更新する
          account = Stripe::Account.retrieve(current_user.merchant_id)
          # 決算の15日後にお支払い  
          account.settings.payouts.schedule.delay_days = 15

          account.save

          logger.debug "#{account}"
        end

        sign_in_and_redirect @user, event: :authentication
        flash[:notice] = "ストライプアカウントを作成し接続しました。" if is_navigational_format?

      else
        session["devise.stripe_connect_data"] = request.env["omniauth.auth"]
        redirect_to dashboard_path
      end
    end    

    def failure
      redirect_to root_path
    end
end

「app\views\users」フォルダに「payout.html.erb」ファイルを新規作成してください。

app\views\users\payout.html.erb(新規作成したファイル)

<section class="section">
    <div class="container">
        <div class="columns is-centered">
            <div class="column is-8-tablet is-6-desktop is-6-widescreen">
            <% if current_user.merchant_id.blank? %>            
                <p class="title has-text-centered">振込先の登録</p>
                <div class="card" style="text-align: center;">
                    <br/>
                    <p>
                        Stripeというサービスを利用して振込先を登録します。<br/>
                        民泊で得た報酬はここで登録した振込先に振り込まれます。<br/>
                    <br/>
                    <br/>
                    <p>下のボタンを押してアカウントに振込先を登録して下さい。</p>
                    <br/>
                    <%= link_to image_tag('stripe_button.png'), stripe_express_path %>
            <% else %>
                <p class="title has-text-centered">振込金額の確認</p>
                <div class="card" style="text-align: center;">
                    <br/>
                    <p>
                        民泊で得た報酬に対する振込金額をここで確認することができます。<br/>
                    </p>
                    <br/>
                    <br/>
                    <p>下のボタンを押すと振り込み金額の確認ができます。</p>
                    <br/>
                    <div class="text-center">
                        <%= link_to "売上金額の確認", @login_link.url, class: "button is-primary" %>
                    </div>
                    <br/>
            <% end %>
                </div>
            </div>
        </div>
    </div>
</section>

<script>
    var toggle_modals = $('.toggle-contact');
    if (toggle_modals) {
        toggle_modals.on('click', function(event) {
            event.stopPropagation();
            event.preventDefault();
            var form = document.getElementById('contact-form');
            form.classList.toggle('is-active');
        });
    }
</script>

ナビゲーションバーのリンクを追加します。

記述追加　app\views\shared\_navbar.html.erb(65行目)

<%= link_to '振込口座の登録', settings_payout_path, class: "navbar-item" %>

app\views\shared\_navbar.html.erb

<nav class="navbar is-light" role="navigation" aria-label="main navigation">
    <div class="navbar-brand">
        <a class="navbar-item" href="/">
            <h1>テストサイトMinpaku6</h1>
        </a>
        <a role="button" class="navbar-burger burger" aria-label="menu" aria-expanded="false" data-target="navbarBasicExample">
            <span aria-hidden="true"></span>
            <span aria-hidden="true"></span>
            <span aria-hidden="true"></span>
        </a>
    </div>
    
    <div id="navbarBasicExample" class="navbar-menu">
        <div class="navbar-start">
            <div class="navbar-item">
            </div>
        </div>
        <div class="navbar-end">
            <a class="navbar-item"></a>
            <a class="navbar-item"></a>

            <!-- もしログインしていなかったら-->
            <% if (!user_signed_in?) %>
                <div class="navbar-item">
                    <div class="buttons">
                        <%= link_to  "新規ユーザ登録", new_user_registration_path, class: "button is-white" %>
                        <%= link_to  "ログイン", new_user_session_path, class: "button is-white" %>
                    </div>
                </div>

            <!-- ログインしていたら　-->
            <% else %>
                <div class="navbar-item has-dropdown is-hoverable" style="margin-right: 100px;">
                    <a class="navbar-item">
                        <figure class="image is-48x48 m-r-5 avatar <%= current_user.status ? "online" : "offline" %>">
                        <div style="margin-top: 0.6rem;">
                        <%= image_tag avatar_url(current_user), class: "is-rounded" %>
                        </div>
                        </figure>                    
                        <%= current_user.full_name %>
                    </a>
                    <div class="navbar-dropdown">
                        <%= link_to  "ユーザ登録情報編集", edit_user_registration_path, class: "navbar-item" %>
                        <a href="" class="navbar-item"></a>
                        <hr class="navbar-divider">
                        <%= link_to  "ログアウト", destroy_user_session_path, method: :delete, class: "navbar-item" %>
                    </div>
                </div>
            <% end %>            
        </div>
    </div>
</nav>

<% if (user_signed_in?) %>
    <nav class="navbar has-shadow" style="z-index: 3;">
        <div class="container">
            <div class="navbar">
                <%= link_to 'ダッシュボード', dashboard_path, class: "navbar-item" %>
                <div class="navbar-item has-dropdown is-hoverable">
                    <a class="navbar-link">ホスト</a>
                    <div class="navbar-dropdown">
                        <%= link_to  "お部屋を新規登録", new_room_path, class: "navbar-item" %>
                        <%= link_to  "登録したお部屋一覧", rooms_path, class: "navbar-item" %>
                        <%= link_to "受注予約の管理", your_reservations_path, class: "navbar-item" %>
                        <%= link_to '振込口座の登録', settings_payout_path, class: "navbar-item" %>
                    </div>
                </div>
                <div class="navbar-item has-dropdown is-hoverable">
                    <a class="navbar-link">ゲスト</a>
                    <div class="navbar-dropdown">
                        <%= link_to "ご予約の確認", your_trips_path, class: "navbar-item" %>
                        <%= link_to 'クレジットカード登録', settings_payment_path, class: "navbar-item", data: { turbolinks: false} %>
                    </div>
                </div>
            </div>
        </div>
    </nav>
<% end %>

<script>
    $(document).ready(function() {
    // navbar burgerアイコンでクリックイベントを確認する
    $(".navbar-burger").click(function() {
        // 「navbar-burger」と「navbar-menu」の両方で「is-active」クラスを切り替える
        $(".navbar-burger").toggleClass("is-active");
        $(".navbar-menu").toggleClass("is-active");
    });
    });
</script>

「app/assets/config/manifest.js」ファイルに記述を追加します。

記述追加　app/assets/config/manifest.js(3行目)

//= link stripe_button.png

app/assets/config/manifest.js

//= link_tree ../images
//= link_directory ../stylesheets .css
//= link stripe_button.png

以下の画像を「app/assets/images」フォルダに「stripe_button.png」という名前で保存してください。

ブラウザ確認
http://localhost:3000/settings/payout

コネクトボタンを押すとホストの振込口座の登録ができます。

テストで登録をしてみます。

SMSに送られたPINコードを入力します。

ホストの必要な情報を入力したら次へ進みます。

振込口座はテスト口座を使います。

完了して接続してみます。

ストライプコネクトとの連結が成功しました。

「merchant_id」にストライプのIDが格納されています。

ストライプのダッシュボードページで連結されたアカウントの詳細が確認できます。

登録したホストへストライプからメールが届きます。

↓↓クリックして頂けると励みになります。

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Rails6.0 | 民泊予約サイトの構築 | 42 | クレジットカード決済 | Stripeコネクト

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