【Rails7】ついにDeviseがTurboに対応しました（最新版のリリース）

gem 'devise'

$ bundle install

$ rails g devise:install

===============================================================================

Depending on your application's configuration some manual setup may be required:

  1. Ensure you have defined default url options in your environments files. Here
     is an example of default_url_options appropriate for a development environment
     in config/environments/development.rb:

       config.action_mailer.default_url_options = { host: 'localhost', port: 3000 }

     In production, :host should be set to the actual host of your application.

     * Required for all applications. *

  2. Ensure you have defined root_url to *something* in your config/routes.rb.
     For example:

       root to: "home#index"
     
     * Not required for API-only Applications *

  3. Ensure you have flash messages in app/views/layouts/application.html.erb.
     For example:

       <p class="notice"><%= notice %></p>
       <p class="alert"><%= alert %></p>

     * Not required for API-only Applications *

  4. You can copy Devise views (for customization) to your app by running:

       rails g devise:views
       
     * Not required *

===============================================================================

$ rails g devise user

# frozen_string_literal: true

class DeviseCreateUsers < ActiveRecord::Migration[7.0]
  def change
    create_table :users do |t|
      ## Database authenticatable
      t.string :name  #←ユーザー名カラムを追加する場合は追記
      t.string :email,              null: false, default: ""
      t.string :encrypted_password, null: false, default: ""

      ## Recoverable
      t.string   :reset_password_token
      t.datetime :reset_password_sent_at

      ## Rememberable
      t.datetime :remember_created_at

      ## Trackable
      # t.integer  :sign_in_count, default: 0, null: false
      # t.datetime :current_sign_in_at
      # t.datetime :last_sign_in_at
      # t.string   :current_sign_in_ip
      # t.string   :last_sign_in_ip

      # Confirmable ↓メール認証を利用する場合はConfirmableのコメントアウトを解除する
      t.string   :confirmation_token
      t.datetime :confirmed_at
      t.datetime :confirmation_sent_at
      t.string   :unconfirmed_email # Only if using reconfirmable

      ## Lockable
      # t.integer  :failed_attempts, default: 0, null: false # Only if lock strategy is :failed_attempts
      # t.string   :unlock_token # Only if unlock strategy is :email or :both
      # t.datetime :locked_at


      t.timestamps null: false
    end

    add_index :users, :email,                unique: true
    add_index :users, :reset_password_token, unique: true
    # add_index :users, :confirmation_token,   unique: true
    # add_index :users, :unlock_token,         unique: true
  end
end

$ rails db:migrate

class User < ApplicationRecord
  devise :database_authenticatable, :registerable,
         :recoverable, :rememberable, :validatable, :confirmable #←追記する
end

$ rails g devise:views

$ rails g devise:views users

<h1>トップページ</h1>

<% if user_signed_in? %>
  <div class="my-5">
    <%= link_to "ログアウト", destroy_user_session_path, method: :delete, data: { turbo_method: :delete, turbo_confirm: "本当にログアウトしますか？" }, class: "font-semibold py-2 px-4 rounded text-white bg-sky-600 hover:bg-sky-800 cursor-pointer" %>
  </div>
<% else %>
  <div class="my-5">
    <%= link_to "新規登録", new_user_registration_path, class: "font-semibold py-2 px-4 rounded text-white bg-sky-600 hover:bg-sky-800 cursor-pointer" %>
    <%= link_to "ログイン", new_user_session_path, class: "font-semibold py-2 px-4 rounded border-2 hover:bg-gray-100 px-3" %>
  </div>
<% end %>

gem 'dotenv-rails'

$ bundle install

# SendGridのAPIキー
SENDGRID_API_KEY = "SendGridのAPIキー"

/public/assets

# Ignore master key for decrypting credentials and more.
/config/master.key

# ↓最下部に追記
/.env

　# SendGrid用のメールサーバー設定（開発環境）
  config.action_mailer.perform_caching = false
  config.action_mailer.default_url_options = { host: 'localhost', port: 3000 }
  config.action_mailer.raise_delivery_errors = true
  config.action_mailer.delivery_method = :smtp
  config.action_mailer.smtp_settings = {
    :address => 'smtp.sendgrid.net',
    :port => 587,
    :domain => 'localhost',
    :user_name => 'apikey',
    :password => ENV['SENDGRID_API_KEY'],
    :authentication => :plain,
    :enable_starttls_auto => true
  }

　# SendGrid用のメールサーバー設定（本番環境→Heroku）
  config.action_mailer.default_url_options = { host: 'https://Herokuのアプリ名.herokuapp.com' }
  config.action_mailer.raise_delivery_errors = true
  config.action_mailer.delivery_method = :smtp
  config.action_mailer.perform_deliveries = true
  config.action_mailer.default :charset => "utf-8"
  config.action_mailer.smtp_settings = {
    :address => 'smtp.sendgrid.net',
    :port => 587,
    :domain => 'heroku.com',
    :user_name => 'apikey',
    :password => ENV['SENDGRID_API_KEY'],
    :authentication => :plain,
    :enable_starttls_auto => true
  }

# SendGridのAPIキー
SENDGRID_API_KEY = "SendGridのAPIキー"

# 送信元のメールアドレス（↓追記）
SENDER_ADDRESS = "送信元のメールアドレス"

class ApplicationMailer < ActionMailer::Base
  default from: ENV['SENDER_ADDRESS']
  layout "mailer"
end

Devise.setup do |config|
  ・・・
  # config.mailer_sender = 'please-change-me-at-config-initializers-devise@example.com'
  # ↓以下のように変更
  config.mailer_sender = ENV['SENDER_ADDRESS']
　・・・
end

<p class="notice"><%= notice %></p>
<p class="alert"><%= alert %></p>

config.i18n.default_locale = :ja
config.time_zone = "Tokyo"