make a basic user model

Gemfile

@@ -2,6 +2,7 @@ source 'https://rubygems.org'
 
 
 gem 'rails', '4.2.1'
+gem 'bcrypt', '3.1.7'
 gem 'bootstrap-sass', :git => 'https://github.com/twbs/bootstrap-sass.git', :branch => 'next'
 gem 'sass-rails', '~> 5.0'
 gem 'uglifier', '>= 1.3.0'

Gemfile.lock

@@ -50,6 +50,7 @@ GEM
     autoprefixer-rails (5.1.11)
       execjs
       json
+    bcrypt (3.1.7)
     binding_of_caller (0.7.2)
       debug_inspector (>= 0.0.1)
     builder (3.2.2)
@@ -208,6 +209,7 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
+  bcrypt (= 3.1.7)
   bootstrap-sass!
   byebug
   coffee-rails (~> 4.1.0)

app/models/user.rb

@@ -0,0 +1,10 @@
+class User < ActiveRecord::Base
+  VALID_EMAIL_REGEX = /\A[\w+\-.]+@[a-z\d\-.]+\.[a-z]+\z/i
+  before_save { self.email = self.email.downcase }
+  validates :name, presence: true, length: { maximum: 50 } 
+  validates :email, presence: true, length: { maximum: 255 },
+                    format: { with: VALID_EMAIL_REGEX },
+                    uniqueness: { case_sensitive: false }
+  has_secure_password
+  validates :password, length: { minimum: 6 }
+end

db/migrate/20150518215416_create_users.rb

@@ -0,0 +1,10 @@
+class CreateUsers < ActiveRecord::Migration
+  def change
+    create_table :users do |t|
+      t.string :name
+      t.string :email
+
+      t.timestamps null: false
+    end
+  end
+end

db/migrate/20150521114234_add_index_to_users_email.rb

@@ -0,0 +1,5 @@
+class AddIndexToUsersEmail < ActiveRecord::Migration
+  def change
+    add_index :users, :email, unique: true
+  end
+end

db/migrate/20150521115706_add_password_digest_to_users.rb

@@ -0,0 +1,5 @@
+class AddPasswordDigestToUsers < ActiveRecord::Migration
+  def change
+    add_column :users, :password_digest, :string
+  end
+end

db/schema.rb

@@ -11,6 +11,16 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 0) do
+ActiveRecord::Schema.define(version: 20150521115706) 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"
+  end
+
+  add_index "users", ["email"], name: "index_users_on_email", unique: true
 
 end

test/fixtures/users.yml

@@ -0,0 +1 @@
+#empty

test/models/user_test.rb

@@ -0,0 +1,54 @@
+require 'test_helper'
+
+class UserTest < ActiveSupport::TestCase
+
+  def setup
+    @user = User.new(name: "Example User", email: "[email protected]",
+                     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.email = "a"*255 + "@example.com"
+    assert_not @user.valid?
+  end
+
+  test "email validation should accept valid email adresses" do
+    valid_addresses = %w[[email protected] [email protected] [email protected] [email protected] [email protected]]
+    valid_addresses.each do |valid_address|
+      @user.email = valid_address
+      assert @user.valid?, "#{valid_address.inspect} should be valid"
+    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 "password should have minimum length" do
+    @user.password = @user.password_confirmation = "a"*5
+    assert_not @user.valid?
+  end
+
+end