deviseでログイン機能を追加する

gem 'devise'

bundle install
rails g devise:install

# model
rails g devise user
rails db:migrate
# controller
rails g devise:controllers users
# views
rails g devise:views users

# user用
rails g devise user
rails db:migrate
rails g devise:controllers users
rails g devise:views users

# staff用
rails g devise staff
rails db:migrate
rails g devise:controllers staffs
rails g devise:views staffs

 # config.scoped_views = false
 # ↑コメントアウトを外してtrueにする
 config.scoped_views = true

app/views/users/sessions/new.html.erb:       ログイン画面
app/views/users/registrations/new.html.erb:  新規登録画面

rails g devise adimn
rails db:migrate
rails g devise:controllers admin
rails g devise:views admin

Admin.find_or_create_by(id: 1) do |admin|
  admin.email = "[email protected]"
  admin.password = "foobar"
end

rails db:seeds

<%= link_to "ログアウト", destroy_user_session_path, method: :delete %>
<%= link_to "ログアウト", destroy_medicalstaff_session_path, method: :delete %>

class UsersController < ApplicationController
  # befor_actionと一緒に使う
  before_action :authenticate_user!

  def index
    @user = User.find(current_user.id)
    favorites = Favorite.where(user_id: current_user.id).pluck(:institution_id)
    @favorites_list = Institution.find(favorites)
  end

  def edit
    @user = User.find(current_user.id)
  end

  def update
    @user = User.find(current_user.id)
    if @user.update(user_params)
      redirect_to edit_user_path(current_user), notice: "プロフィール情報を更新しました"
    else
      render "edit"
    end
  end

  private
  def user_params
    params.require(:user).permit(:name, :image)
  end
end

module Sample  #module名はわかりやすいものを
  class Application < Rails::Application
    config.i18n.default_locale = :ja
  end
end

gem 'rails-i18n'

bundle install