feat: ユーザー認証用カラムの追加と認証基盤の初期整備

back/Gemfile

@@ -10,7 +10,7 @@ gem "puma", ">= 5.0"
 # gem "jbuilder"
 
 # Use Active Model has_secure_password [https://guides.rubyonrails.org/active_model_basics.html#securepassword]
-# gem "bcrypt", "~> 3.1.7"
+gem "bcrypt", "~> 3.1.7"
 
 # Windows does not include zoneinfo files, so bundle the tzinfo-data gem
 gem "tzinfo-data", platforms: %i[ windows jruby ]

back/Gemfile.lock

@@ -74,6 +74,7 @@ GEM
       uri (>= 0.13.1)
     ast (2.4.3)
     base64 (0.3.0)
+    bcrypt (3.1.21)
     bcrypt_pbkdf (1.1.2)
     bcrypt_pbkdf (1.1.2-arm64-darwin)
     bcrypt_pbkdf (1.1.2-x86_64-darwin)
@@ -328,6 +329,7 @@ PLATFORMS
   x86_64-linux-musl
 
 DEPENDENCIES
+  bcrypt (~> 3.1.7)
   bootsnap
   brakeman
   debug

back/app/models/user.rb

@@ -1,6 +1,9 @@
 class User < ApplicationRecord
     enum :personality, { energetic: 0, neutral: 1, calm: 2 }
     enum :preference,  { outdoor: 0, both: 1, indoor: 2 }
+    enum :role, { user: 0, admin: 1 }
+
+    has_secure_password
 
     before_validation :set_defaults, on: :create
 

back/db/migrate/20260221163506_add_auth_columns_to_users.rb

@@ -0,0 +1,9 @@
+class AddAuthColumnsToUsers < ActiveRecord::Migration[8.0]
+  def change
+    add_column :users, :email, :string, null: false
+    add_column :users, :password_digest, :string, null: false
+    add_column :users, :role, :integer, null: false, default: 0
+
+    add_index :users, :email, unique: true
+  end
+end