Make a basic User model (including secure passwords)

.rubocop.yml

+AllCops:
+  # Rails特有のチェックを実行
+  Rails:
+    Enabled: true
+
+  # チェック対象外ディレクトリ
+  Exclude:
+    - 'db/**/*'
+    - 'config/**/*'
+    - 'bin/**/*'
+    - 'vendor/**/*'
+    - 'data/**/*'
+    - 'docker/**/*'
+    - 'spec/*'
+    - 'Guardfile'
+    - 'Dockerfile'
+    - 'docker-compose.yml'
+
+# Ascii文字以外のコメントを許容
+Style/AsciiComments:
+  Enabled: false
+
+# 1行の最大文字列長を緩和
+Metrics/LineLength:
+  Max: 160
+
+# メソッド定義の行数を緩和
+Metrics/MethodLength:
+  Max: 50
+
+# Classの最大長制限
+Metrics/ClassLength:
+  Max: 300
+
+# top-classでのコメントを任意に
+Style/Documentation:
+  Enabled: false
+
+# 1行if文を使用可に
+Style/IfUnlessModifier:
+  Enabled: false
+
+# nestしたclass/moduleを許容
+Style/ClassAndModuleChildren:
+  Enabled: false
+
+# 後置rescueを許容
+Style/RescueModifier:
+  Enabled: false
+
+# and/orを許容
+Style/AndOr:
+  Enabled: false
+
+# ABCチェックを無効
+Metrics/AbcSize:
+  Enabled: false
+
+# ???
+Style/RaiseArgs:
+  Enabled: false
+
+# Hashの最後のカンマを許容
+Style/TrailingCommaInLiteral:
+  Enabled: false
+
+# Hashの最後のカンマを許容
+Style/TrailingCommaInArguments:
+  Enabled: false
+
+# コンマの後のスペース無しを許容
+# hoge(1,2) => hoge(1, 2)
+Style/SpaceAfterComma:
+  Enabled: false
+
+# Stringのシングルクォートチェックを許容
+# "aaa" -> 'aaa'
+Style/StringLiterals:
+  Enabled: false
+
+# コロンの後のスペースを許容
+# hoge(x:1) -> hoge(x: 1)
+Style/SpaceAfterColon:
+  Enabled: false
+
+# コメントの後のスペース無しを許容
+# コードの一時コメントアウト対策
+Style/LeadingCommentSpace:
+  Enabled: false
+
+# メソッドの最後のreturnを許容
+Style/RedundantReturn:
+  Enabled: false
+
+# 文字列Arrayを作成する場合には%w/%Wを使わないのを許容
+# ["aaa", 'bbb', 'ccc'] => %w(aaa bbb ccc)
+Style/WordArray:
+  Enabled: false
+
+# Hashパラメータの前後の空白無しを許容
+# ({1, 2}) => ( {1, 2} )
+Style/BracesAroundHashParameters:
+  Enabled: false
+
+# Hashのインデントに2つ以上の空白を許可
+Style/IndentHash:
+  Enabled: false
+
+# 複数行のメソッドチェーン?を許可
+Style/MultilineOperationIndentation:
+  Enabled: false
+
+# 複数のメソッドチェーンを許可
+Style/MultilineBlockChain:
+  Enabled: false
+
+# self.methodを許可
+# selfの使用は意図的にローカル変数等との区別を行うことが多いため
+Style/RedundantSelf:
+  Enabled: false
+
+# {}周り
+# 通常は良いが、メソッドチェーン等の一部に悪影響が出るため
+# hoge.select{|v|v.fuga} => hoge.select{ |v|v.fuga }
+Style/SpaceInsideBlockBraces:
+  Enabled: false
+Style/SpaceInsideHashLiteralBraces:
+  Enabled: false
+
+# オペレータの前後に空白無しを許可
+# 通常は問題ないが、+=等の場合にも反応するため
+# += => + =
+Style/SpaceAroundOperators:
+  Enabled: false
+
+Style/FrozenStringLiteralComment:
+  Enabled: false
+
+Style/RedundantFreeze:
+  Enabled: false
+
+EmptyLinesAroundBody:
+  Enabled: false
+
+TrailingWhitespace:
+  Enabled: false
\ No newline at end of file

Gemfile

@@ -64,4 +64,5 @@ end
 
 
 # Windows does not include zoneinfo files, so bundle the tzinfo-data gem
 # Windows does not include zoneinfo files, so bundle the tzinfo-data gem
 gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]
 gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]
-gem 'bootstrap-sass', '~> 3.3', '>= 3.3.7'
+gem 'bootstrap-sass', '~> 3.3', '>= 3.3.7'
\ No newline at end of file
+gem 'bcrypt', '~> 3.1', '>= 3.1.12'
\ No newline at end of file

Gemfile.lock

@@ -49,6 +49,7 @@ GEM
     arel (9.0.0)
     arel (9.0.0)
     autoprefixer-rails (9.0.2)
     autoprefixer-rails (9.0.2)
       execjs
       execjs
+    bcrypt (3.1.12)
     bindex (0.5.0)
     bindex (0.5.0)
     bootsnap (1.3.1)
     bootsnap (1.3.1)
       msgpack (~> 1.0)
       msgpack (~> 1.0)
@@ -202,6 +203,7 @@ PLATFORMS
   ruby
   ruby
 
 
 DEPENDENCIES
 DEPENDENCIES
+  bcrypt (~> 3.1, >= 3.1.12)
   bootsnap (>= 1.1.0)
   bootsnap (>= 1.1.0)
   bootstrap-sass (~> 3.3, >= 3.3.7)
   bootstrap-sass (~> 3.3, >= 3.3.7)
   byebug
   byebug

app/models/user.rb

+class User < ApplicationRecord
+  before_save { email.downcase! }
+  validates :name, presence: true, length: { maximum: 50 }
+
+  VALID_EMAIL_REGEX = /\A[\w+\-.]+@[a-z\d\-.]+\.[a-z]+\z/i
+  validates :email, presence: true, length: { maximum: 255 }, 
+    format: { with: VALID_EMAIL_REGEX }, uniqueness: { case_sensitive: false }
+
+  has_secure_password
+  validates :password, presence: true, length: { minimum: 6 }
+end

db/migrate/20180801025405_create_users.rb

+class CreateUsers < ActiveRecord::Migration[5.2]
+  def change
+    create_table :users do |t|
+      t.string :name
+      t.string :email
+
+      t.timestamps
+    end
+  end
+end

db/migrate/20180801093819_add_index_to_users_email.rb

+class AddIndexToUsersEmail < ActiveRecord::Migration[5.2]
+  def change
+    add_index :users, :email, unique: true
+  end
+end

db/migrate/20180802015202_add_password_digest_to_users.rb

+class AddPasswordDigestToUsers < ActiveRecord::Migration[5.2]
+  def change
+    add_column :users, :password_digest, :string
+  end
+end

db/schema.rb

+# This file is auto-generated from the current state of the database. Instead
+# of editing this file, please use the migrations feature of Active Record to
+# incrementally modify your database, and then regenerate this schema definition.
+#
+# Note that this schema.rb definition is the authoritative source for your
+# database schema. If you need to create the application database on another
+# system, you should be using db:schema:load, not running all the migrations
+# from scratch. The latter is a flawed and unsustainable approach (the more migrations
+# you'll amass, the slower it'll run and the greater likelihood for issues).
+#
+# It's strongly recommended that you check this file into your version control system.
+
+ActiveRecord::Schema.define(version: 2018_08_02_015202) do
+
+  create_table "users", force: :cascade do |t|
+    t.string "name"
+    t.string "email"
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+    t.string "password_digest"
+    t.index ["email"], name: "index_users_on_email", unique: true
+  end
+
+end

test/models/user_test.rb

+require 'test_helper'
+
+class UserTest < ActiveSupport::TestCase
+  def setup
+    @user = User.new name: "Example User", email: "user@example.com",
+      password: "foobar", password_confirmation: "foobar"
+  end
+
+  test "should be valid" do
+    assert @user.valid?
+  end
+
+  test "name should be present" do
+    @user.name = " "
+    assert_not @user.valid?
+  end
+
+  test "email should be present" do
+    @user.email = " "
+    assert_not @user.valid?
+  end
+
+  test "name should not be too long" do
+    @user.name = "a" * 51
+    assert_not @user.valid?
+  end
+
+  test "email should not be too long" do
+    @user.name = "a" * 244 + "@example.com"
+    assert_not @user.valid?
+  end
+
+  test "email validation should accept valid addresses" do
+    valid_addresses = %w[user@example.com USER@foo.COM A_US-ER@foo.bar.org
+                         first.last@foo.jp alice+bob@baz.cn]
+    valid_addresses.each do |valid_address|
+      @user.email = valid_address
+      assert @user.valid?, "#{valid_address.inspect} should be valid"
+    end
+  end
+
+  test "email validation should reject invalid addresses" do
+    invalid_addresses = %w[user@example,com user_at_foo.org user.name@example.
+                           foo@bar_baz.com foo@bar+baz.com]
+    invalid_addresses.each do |invalid_address|
+      @user.email = invalid_address
+      assert_not @user.valid?, "#{invalid_address.inspect} should be invalid"
+    end
+  end
+
+  test "email addresses should be unique" do
+    duplicate_user = @user.dup
+    duplicate_user.email = @user.email.upcase
+    @user.save
+    assert_not duplicate_user.valid?
+  end
+
+  test "email addresses should be saved as lower-case" do
+    mixed_case_email = "Foo@ExAMPle.CoM"
+    @user.email = mixed_case_email
+    @user.save
+    assert_equal mixed_case_email.downcase, @user.reload.email
+  end
+
+  test "password should be present (nonblank)" do
+    @user.password = @user.password_confirmation = " " * 6
+    assert_not @user.valid?
+  end
+
+  test "password should have a minimum length" do
+    @user.password = @user.password_confirmation = "a" * 5
+    assert_not @user.valid?
+  end
+end