【Rails/devise】会員登録時に関連付けられたモデルを同時に作成する

class CreateAccounts < ActiveRecord::Migration[7.1]
  def change
    create_table :accounts do |t|
      t.string :name, null: false

      t.timestamps
    end
  end
end

class Account < ApplicationRecord
  validates :name, presence: true
end

gem "devise"

Rails.application.configure do
  # 省略  
  config.action_mailer.default_url_options = { host: "localhost", port: 3000 }
end

# frozen_string_literal: true

class DeviseCreateUsers < ActiveRecord::Migration[7.1]
  def change
    create_table :users do |t|
      ## Database authenticatable
      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
      # ↓コメントアウトを外す↓
      t.string   :confirmation_token
      t.datetime :confirmed_at
      t.datetime :confirmation_sent_at
      t.string   :unconfirmed_email # Only if using reconfirmable
      # ↑コメントアウトを外す↑

      ## 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.integer :role, null: false, default: 0 # デフォルト値を追加
      t.references :account, null: false, foreign_key: true # not null制約、外部キー制約を追加
      t.string :first_name
      t.string :last_name
      t.boolean :admin, null: false, default: false # デフォルト値を追加

      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

class User < ApplicationRecord
  # Include default devise modules. Others available are:
  # :confirmable, :lockable, :timeoutable, :trackable and :omniauthable
  devise :database_authenticatable, :registerable,
         :recoverable, :rememberable, :validatable, :confirmable

  enum role: { general: 0, owner: 1 }
end

class Account < ApplicationRecord
  validates :name, presence: true

  has_many :users, dependent: :destroy
end

class User < ApplicationRecord
  # Include default devise modules. Others available are:
  # :confirmable, :lockable, :timeoutable, :trackable and :omniauthable
  devise :database_authenticatable, :registerable,
         :recoverable, :rememberable, :validatable, :confirmable

  belongs_to :account
  accepts_nested_attributes_for :account

  enum role: { general: 0, owner: 1 }
end

Rails.application.routes.draw do
  devise_for :users

  authenticate :user do
    root to: "dashboard#show", as: :user_root
  end

  devise_scope :user do
    root to: "devise/sessions#new"
  end
end

# frozen_string_literal: true

class Users::RegistrationsController < Devise::RegistrationsController
  before_action :configure_sign_up_params, only: [:create]
  # before_action :configure_account_update_params, only: [:update]

  # GET /resource/sign_up
  def new
    build_resource
    resource.build_account # userに紐づくaccountを初期化
    yield resource if block_given?
    respond_with resource
  end

  # POST /resource
  # def create
  #   super
  # end

  # GET /resource/edit
  # def edit
  #   super
  # end

  # PUT /resource
  # def update
  #   super
  # end

  # DELETE /resource
  # def destroy
  #   super
  # end

  # GET /resource/cancel
  # Forces the session data which is usually expired after sign
  # in to be expired now. This is useful if the user wants to
  # cancel oauth signing in/up in the middle of the process,
  # removing all OAuth session data.
  # def cancel
  #   super
  # end

  protected

  def build_resource(hash = {})
    self.resource = resource_class.new_with_session(hash, session)
    self.resource.role = :owner
  end

  # If you have extra params to permit, append them to the sanitizer.
  def configure_sign_up_params
    devise_parameter_sanitizer.permit(:sign_up, keys: [
      account_attributes: [:name]
    ])
  end

  # If you have extra params to permit, append them to the sanitizer.
  # def configure_account_update_params
  #   devise_parameter_sanitizer.permit(:account_update, keys: [:attribute])
  # end

  # The path used after sign up.
  # def after_sign_up_path_for(resource)
  #   super(resource)
  # end

  # The path used after sign up for inactive accounts.
  # def after_inactive_sign_up_path_for(resource)
  #   super(resource)
  # end
end

Rails.application.routes.draw do
  devise_for :users,
    controllers: {
      registrations: "users/registrations"
    }

  # 省略
end

module.exports = {
  // 省略

  plugins: [
    require('@tailwindcss/forms'),
  ]
}

<div class="flex flex-col justify-center mt-12">
  <h2 class="text-center text-3xl font-extrabold text-gray-900">
    Sign up
  </h2>
  <div class="bg-white mt-8 mx-auto w-full max-w-lg p-8 shadow rounded-lg">
    <%= form_for(resource, as: resource_name, url: registration_path(resource_name)) do |form| %>
      <%= form.fields_for :account do |account_fields| %>
        <%= render "devise/shared/error_messages", resource: resource %>

        <div class="mb-4">
          <%= account_fields.label :name, class: "block text-gray-700 text-sm font-bold mb-2" %>
          <%= account_fields.text_field :name, autofocus: true, class: "shadow border-gray-200 rounded w-full" %>
        </div>

        <div class="mb-4">
          <%= form.label :email, class: "block text-gray-700 text-sm font-bold mb-2" %>
          <%= form.email_field :email, autocomplete: "email", class: "shadow border-gray-200 rounded w-full" %>
        </div>

        <div class="mb-4">
          <%= form.label :password, class: "block text-gray-700 text-sm font-bold mb-2" %>
          <%= form.password_field :password, autocomplete: "new-password", class: "shadow border-gray-200 rounded w-full" %>
        </div>

        <div class="mb-6">
          <%= form.label :password_confirmation, class: "block text-gray-700 text-sm font-bold mb-2" %>
          <%= form.password_field :password_confirmation, autocomplete: "new-password", class: "shadow border-gray-200 rounded w-full" %>
        </div>

        <%= form.button "Sign Up", class: "font-bold py-2 px-4 mb-4 rounded bg-blue-500 hover:bg-blue-700 text-white w-full" %>

        <p class="text-center text-sm text-gray-600 max-w">
          Already have an account？
          <%= link_to "Sign in", new_user_session_path, class: "font-medium text-blue-600 hover:text-blue-800" %>
        </p>
      <% end %>
    <% end %>
  </div>
</div>

require "rails_helper"

RSpec.describe "Registrations", type: :system do
  context "When the information is entered correctly" do
    it "A new user can be registered, and an account linked to user is created" do
      visit new_user_registration_path
      fill_in "user_account_attributes_name", with: "TEST inc."
      fill_in "user_email", with: "user@example.com"
      fill_in "user_password", with: "password"
      fill_in "user_password_confirmation", with: "password"

      expect do
        click_button "Sign Up"
        expect(page).to have_current_path new_user_session_path
      end.to change(User, :count).by(1).and change(Account, :count).by(1)

      user = User.last
      account = Account.last
      expect(user.account).to eq(account)
    end
  end
end